Range Rover Temp Sender Thread Size?
Discussion
Hi all,
Can someone 100% confirm the thread size for what is commonly referred to in TVR circles as the Range Rover temp sender?
I believe the above Range Rover temp sender marked with a green arrow has a 1/8 NPT thread?
If I'm correct I may have located a 1/8 NPT sender with the exact same resistance qualities to match the original Caerbont coolant temperature gauge used in the majority of Chimaeras and Griffiths. This would allow Chimaera and Griffith owners to simply remove the redundant Range Rover temp sender TVR never used and replace it with a 1/8 NPT threaded sender that has the exact same resistance characteristics as the original 5/8 UNF threaded sender TVR used.
For those who are unaware of the problem I should explain; because TVR used a sender with 5/8 UNF thread they were forced to fit in an adapter which is well known to give inconsistent readings, the adapter is effectively a dead end spur so water contact and circulation around the sender is very poor.
As a work around for years TVR owners (myself included) have used a resistor on the Range Rover temp sender like this....
However recently I had cause to test this resistor idea, I had a temporary radiator fan failure caused by one on those nasty cheap waterproof fuse holders I have come to dislike so much, at idle with no fans I noticed the temperature reading on my Canems software was heading to and past the 100c point with the digital reading on my Davies Craig fan controller showing the same.
However my TVR temperature gauge running the Range Rover temp sender and resistor mod was still displaying 90c
Quite clearly the resistor mod is a dangerous idea, a temperature gauge that rises to 90c normally is fine but one that stops there no matter how hot the coolant becomes is actually worse than useless as you think you're at 90c when the engine is actually dangerously overheating.
So if someone can come on to confirm 100% that the Range Rover temp sender has a 1/8 NPT thread we may well have ourselves a solution that will solve the problem of poor and inconsistent temperature gauge readings on our Caerbont gauge equipped Chims & Griffs..... and solve properly this time!
Thanks, Dave.
Can someone 100% confirm the thread size for what is commonly referred to in TVR circles as the Range Rover temp sender?
I believe the above Range Rover temp sender marked with a green arrow has a 1/8 NPT thread?
If I'm correct I may have located a 1/8 NPT sender with the exact same resistance qualities to match the original Caerbont coolant temperature gauge used in the majority of Chimaeras and Griffiths. This would allow Chimaera and Griffith owners to simply remove the redundant Range Rover temp sender TVR never used and replace it with a 1/8 NPT threaded sender that has the exact same resistance characteristics as the original 5/8 UNF threaded sender TVR used.
For those who are unaware of the problem I should explain; because TVR used a sender with 5/8 UNF thread they were forced to fit in an adapter which is well known to give inconsistent readings, the adapter is effectively a dead end spur so water contact and circulation around the sender is very poor.
As a work around for years TVR owners (myself included) have used a resistor on the Range Rover temp sender like this....
However recently I had cause to test this resistor idea, I had a temporary radiator fan failure caused by one on those nasty cheap waterproof fuse holders I have come to dislike so much, at idle with no fans I noticed the temperature reading on my Canems software was heading to and past the 100c point with the digital reading on my Davies Craig fan controller showing the same.
However my TVR temperature gauge running the Range Rover temp sender and resistor mod was still displaying 90c
Quite clearly the resistor mod is a dangerous idea, a temperature gauge that rises to 90c normally is fine but one that stops there no matter how hot the coolant becomes is actually worse than useless as you think you're at 90c when the engine is actually dangerously overheating.
So if someone can come on to confirm 100% that the Range Rover temp sender has a 1/8 NPT thread we may well have ourselves a solution that will solve the problem of poor and inconsistent temperature gauge readings on our Caerbont gauge equipped Chims & Griffs..... and solve properly this time!
Thanks, Dave.
Ok thanks chaps 
I was also 99% sure the so called Range Rover sender has a 1/8 NPT thread but appreciate the double confirmation from Bobfather and hoofa, I will place my order tomorrow and do some testing before releasing the details, I want to be sure the sender I've identified does indeed deliver the results I've been promised.
If all goes well, in the spirit of supporting the TVR community with open source information and rather than attempting to profiteer from my discovery I will make the part number and supplier public on these pages. To be clear fitting the sender will be a simple case of winding out the Range Rover sender and replacing it with the new one that is expected to cost no more than £20 including postage.
With the resistor mod proven to be untrustworthy and a Spyda Design Gauge Wizard selling for £44.00 I'm hoping this easy to install £15.00 sender swap could be the cost effective and straightforward solution to that TVR sender thats stuck in blind hole adapter?
Watch this space
I was also 99% sure the so called Range Rover sender has a 1/8 NPT thread but appreciate the double confirmation from Bobfather and hoofa, I will place my order tomorrow and do some testing before releasing the details, I want to be sure the sender I've identified does indeed deliver the results I've been promised.
If all goes well, in the spirit of supporting the TVR community with open source information and rather than attempting to profiteer from my discovery I will make the part number and supplier public on these pages. To be clear fitting the sender will be a simple case of winding out the Range Rover sender and replacing it with the new one that is expected to cost no more than £20 including postage.
With the resistor mod proven to be untrustworthy and a Spyda Design Gauge Wizard selling for £44.00 I'm hoping this easy to install £15.00 sender swap could be the cost effective and straightforward solution to that TVR sender thats stuck in blind hole adapter?
Watch this space
ed_crouch said:
So the one-wire gauge sender is 1/8NPT.
The two-wire ecu CTS is threaded M12*1.5. I know this for definite because I was making a reducer bushing for one last night.
The one underneath that needs forgetting about.....no idea.
Excellent, thanks The two-wire ecu CTS is threaded M12*1.5. I know this for definite because I was making a reducer bushing for one last night.
The one underneath that needs forgetting about.....no idea.
I have ordered two senders as this is the minimum order requirement, one I will test in my Chimaera and the other will go to a local friend also with a Chimaera.
So before I release the details of the the new supposedly matched 1/8NPT sender it will have been tested and confirmed to work correctly in two Chimaeras both running the Caerbont gauges.
Lets hope it works
, my resistor mod needs to go as it is not to be trusted 
Thanks Dick (trumpet1608), thats a very comprehensive and well written response but with a concerning conclusion that the gauge and sender were never actually correctly matched in the first place 
It seems I'm following your lead, but as I've just committed to the new sender when it arrives I will test it against my Canems software that gives accurate coolant temp readings and see what results I get.
On the separate point of Chimaera gauges being affected by electrical load I too can confirm if the earthing on the car is not spot on the gauges are the first to show you, I recently found the following poor connections at both my battery terminals others had missed.
After correcting the issues illumination of all the gauges became brighter and their reading became more accurate too.
I suspect the reason for your temp gauge over reading with the headlights on was due to the poor grounding that can plague these cars, being sensitive instruments the gauges by their very nature are also very sensitive to grounding issues and voltage drops within the car's electrical loom.
And because they are gauges the driver gets to see a clear visual representation of these issues
It seems I'm following your lead, but as I've just committed to the new sender when it arrives I will test it against my Canems software that gives accurate coolant temp readings and see what results I get.
On the separate point of Chimaera gauges being affected by electrical load I too can confirm if the earthing on the car is not spot on the gauges are the first to show you, I recently found the following poor connections at both my battery terminals others had missed.
After correcting the issues illumination of all the gauges became brighter and their reading became more accurate too.
I suspect the reason for your temp gauge over reading with the headlights on was due to the poor grounding that can plague these cars, being sensitive instruments the gauges by their very nature are also very sensitive to grounding issues and voltage drops within the car's electrical loom.
And because they are gauges the driver gets to see a clear visual representation of these issues
Ok the results are in, initially I was concerned the new sender is shorter than the Range Rover sender:
I was also concerned the gauge was not responding but it soon started to move, lets not forget the TVR gauge only starts at 50c so I part warmed the engine from cold start recording 50c on my Canems software before restarting and resuming the test, from 50c where the scale on the TVR gauge starts it appears to follow the digital readings on my Canems software nicely.
https://www.youtube.com/watch?v=KNClgYs-WWA
As you'll see in the above YouTube video I did record a spike at one point but I've run the car extensively now and this seems to have been an early one off anomaly on this very first test.
The second video below shows what happened when I pulled one of my fan relays so the car was only running one radiator fan, from past experience with just one fan operational I know the coolant will rise to 100c and above eventually. The idea of this test being to see if the gauge with the new sender will show an overheating situation which is really the most important function of any car temp gauge.
https://www.youtube.com/watch?v=tSnq2M84Zjo
Out on the road driving the car at speed on the motorway I'm holding a steady 87c on the Canems software and the TVR gauge matches this perfectly, as I reduce my road speed from a 70-80 lepton cruise velocity to the typical M25 crawl of 25 - 40mph the Canems software shows 89-90c
With the gauge spot on again.
So after extensive idle testing and further testing at various driving speeds my confidence in the TVR gauge has completely returned, the new matched 1/8 NPT sender screwed into the inlet manifold as a direct replacement to the Range Rover sender works a treat. In my opinion this matched 1/8 NPT sender is a marked improvement over the original 5/8 UNF sender TVR were forced to fit in an adapter, the adapter is effectively a dead end spur so water contact and circulation around the sender is very poor and so my gauge readings were always rather inconsistent.
I tried to solve this issue by using the Range Rover sender, the trouble is this sender is not not matched to the TVR gauge so like others I fitted an inline resistor which appears to do the trick but as I recently discovered it is not a reliable method of tuning a sender to a gauge, recently with a rad fan fuse blown I witnessed the gauge stuck at 90c when true coolant temp had risen well above this figure which means the most important function of the gauge (to show overheating) was lost.
I'm super happy with the new sender, it's clearly correctly matched to the TVR gauge as I was promised and follows my Canems software readings extremely closely, most importantly the gauge now shows me if my coolant temperature is starting to head towards an overheating situation and gives me plenty of warning to pull over to let the car cool before any damage is done
The sender is available from Caerbont themselves, just call Nial on 01639 732281 and ask for a TT6811-03. I had to buy two as this was the minimum order quantity at £30.19 including VAT and carriage so thats £15.10 each which is much cheaper than buying the original 5/8 UNF sender from a TVR parts specialist. The TT6811-03 is cheaper and works better, being a 1/8 NPT thread it's also a straight swap for what we in TVR circles call the Range Rover sender that sits unused in the inlet manifold.
For more accurate and consistent coolant temperature readings plus the peace of mind an overheating situation can be spotted early I think it's well worth £15.10, and if you can't find a friend to share the cost of two senders Nial did say the TT6811-03 is also used on some Caterhams. Nial recommended I call Redline Components Ltd who are a Caterham parts specialist and will apparently sell the TT6811-03 sender individually, I just went for the two from Caerbont as a local friend and Chimaera owner was pleased to take the second one.
I hope this discovery helps others in the TVR community, I also recommend anyone with the resistor mod on the Range Rover sender gets rid of it straight away as I've proved it's just not to be trusted!
I was also concerned the gauge was not responding but it soon started to move, lets not forget the TVR gauge only starts at 50c so I part warmed the engine from cold start recording 50c on my Canems software before restarting and resuming the test, from 50c where the scale on the TVR gauge starts it appears to follow the digital readings on my Canems software nicely.
https://www.youtube.com/watch?v=KNClgYs-WWA
As you'll see in the above YouTube video I did record a spike at one point but I've run the car extensively now and this seems to have been an early one off anomaly on this very first test.
The second video below shows what happened when I pulled one of my fan relays so the car was only running one radiator fan, from past experience with just one fan operational I know the coolant will rise to 100c and above eventually. The idea of this test being to see if the gauge with the new sender will show an overheating situation which is really the most important function of any car temp gauge.
https://www.youtube.com/watch?v=tSnq2M84Zjo
Out on the road driving the car at speed on the motorway I'm holding a steady 87c on the Canems software and the TVR gauge matches this perfectly, as I reduce my road speed from a 70-80 lepton cruise velocity to the typical M25 crawl of 25 - 40mph the Canems software shows 89-90c
With the gauge spot on again.
So after extensive idle testing and further testing at various driving speeds my confidence in the TVR gauge has completely returned, the new matched 1/8 NPT sender screwed into the inlet manifold as a direct replacement to the Range Rover sender works a treat. In my opinion this matched 1/8 NPT sender is a marked improvement over the original 5/8 UNF sender TVR were forced to fit in an adapter, the adapter is effectively a dead end spur so water contact and circulation around the sender is very poor and so my gauge readings were always rather inconsistent.
I tried to solve this issue by using the Range Rover sender, the trouble is this sender is not not matched to the TVR gauge so like others I fitted an inline resistor which appears to do the trick but as I recently discovered it is not a reliable method of tuning a sender to a gauge, recently with a rad fan fuse blown I witnessed the gauge stuck at 90c when true coolant temp had risen well above this figure which means the most important function of the gauge (to show overheating) was lost.
I'm super happy with the new sender, it's clearly correctly matched to the TVR gauge as I was promised and follows my Canems software readings extremely closely, most importantly the gauge now shows me if my coolant temperature is starting to head towards an overheating situation and gives me plenty of warning to pull over to let the car cool before any damage is done
The sender is available from Caerbont themselves, just call Nial on 01639 732281 and ask for a TT6811-03. I had to buy two as this was the minimum order quantity at £30.19 including VAT and carriage so thats £15.10 each which is much cheaper than buying the original 5/8 UNF sender from a TVR parts specialist. The TT6811-03 is cheaper and works better, being a 1/8 NPT thread it's also a straight swap for what we in TVR circles call the Range Rover sender that sits unused in the inlet manifold.
For more accurate and consistent coolant temperature readings plus the peace of mind an overheating situation can be spotted early I think it's well worth £15.10, and if you can't find a friend to share the cost of two senders Nial did say the TT6811-03 is also used on some Caterhams. Nial recommended I call Redline Components Ltd who are a Caterham parts specialist and will apparently sell the TT6811-03 sender individually, I just went for the two from Caerbont as a local friend and Chimaera owner was pleased to take the second one.
I hope this discovery helps others in the TVR community, I also recommend anyone with the resistor mod on the Range Rover sender gets rid of it straight away as I've proved it's just not to be trusted!
Edited by ChimpOnGas on Friday 28th June 15:18
bobfather said:
Absolutely fantastic Dave. I'll be placing my double order soon. Many thanks for the youtube clips, they demonstrate beautifully how well this works. I'd suggest that differences in heat soak between the new and the ECU senders could easily account for variation during temperature rise. What's important is that they are the same at stable temperature and that they respond rapidly to changes
Thanks Bob, glad it helps you and any others looking for a better solution to getting the correct readings on the TVR gauge. I know some claim the standard arrangement works Ok and others say it'll never match the gauge properly but my experience was what TVR gave us was poor, I also discovered in my case adding a resistor to the Range Rover sender was an unsafe and unreliable solution.I'm super happy with the accuracy of my TVR gauge now, any tiny variance between the ECU sender and the new temp gauge sender are so small as to be considered irrelevant in my opinion, it's also impossible to perfectly compare a digital reading with an analogue gauge but at worse I'd say they are only ever 2c different and as you say Bob the new arrangement responds quickly and accurately while providing a clear early warning of any impending overheating.
As an aside point if you jump to 3.00 mins on the below video you can see scatter spark kicking in, as the coolant temp trips over from 67c to 68c ignition timing drops from 21 degrees to 15 degrees bringing my idle down 150rpm from 1150rpm to 1000rpm. I use this strategy to increase my idle speed slightly during warm up rather than using air, getting shot of the pattern part PWM Bosch idle valve and using a manual extra air valve of my own design with the addition of scatter spark delivered great idle quality and low speed drivability improvements.
https://www.youtube.com/watch?v=KNClgYs-WWA
mk1fan said:
So, does this apply to the 'flapper' 3.5 versions of the RV8 TVR used in the Wedges?
This topic relates to a 1/8 NPT sender that's specifically matched to the Cearbont temperature gauge used on Chimaeras and Griffiths manufactured from late1995/early 1996 on.For the avoidance of any doubt the Cearbont gauge sets look like this......
This sender is not matched to the gauges fitted to earlier Chimaeras & Griffiths let alone an RV8 Wedge manufactured a number of years before the the Griffith and Chimaera models were even conceived, so I'm afraid to say I think its highly unlikely the TT6811-03 sender will work on your Wedge.
Sorry I can't be of more help.
Dave.
My apologies, there was a typo of one digit in my above post that I have now corrected.
For the avoidance of any doubt the number Nial gave me was 01639 732281 and this is his direct dial, I explained there would likely be some interest if the sender worked and he seemed happy to field future calls. Nial was super nice and extremely helpful but it's probably not unfair to say Caerbont aren't the slickest of operations when it comes to selling direct to the general public, they are clearly more geared up for business to business trading.
Caerbont will offer to email you a WorldPay invoice (a bit like PayPal) but we tried this twice and I never received the link, I then discovered Caerbont have recently joined the modern age and now accept card payments but to make this work you need to get to Jan who is the only employee authorised to take card payments! Caebont also dont really operate on Fridays so it's what I'd call a 'retro customer experience' and of course you'll need to buy two senders as thats their minimum order.
I recommend trying Jan between 10.00am & 4.00pm Monday to Thursday but obviously avoid lunch times, tea breaks, natural breaks and forget the leak harvesting season altogether of course. After trying for days just to buy a couple of senders off them I did start to feel I had been caught some sort of 1970's Welsh time vortex but I got there in the end, to be fair to Nial who was really helpful he did say Redline Components Ltd stock the TT6811-03 sender as it's used on Caterhams and they should be able to supply them in singles.
I Googled Redline Components Ltd and got this very basic one page website....
http://www.redlinecomponents.co.uk/
As it's not a proper online shop and my mate wanted a sender too I thought it was just as easy to keep trying to buy from Caerbont direct, but who knows Redline Components Ltd might even work a full week so I guess they're worth a shot
Anyway, I must get back to work as sadly Friday is a normal working day for me
Happy sender shopping chaps, I wish you all good luck with it.
Dave.
For the avoidance of any doubt the number Nial gave me was 01639 732281 and this is his direct dial, I explained there would likely be some interest if the sender worked and he seemed happy to field future calls. Nial was super nice and extremely helpful but it's probably not unfair to say Caerbont aren't the slickest of operations when it comes to selling direct to the general public, they are clearly more geared up for business to business trading.
Caerbont will offer to email you a WorldPay invoice (a bit like PayPal) but we tried this twice and I never received the link, I then discovered Caerbont have recently joined the modern age and now accept card payments but to make this work you need to get to Jan who is the only employee authorised to take card payments! Caebont also dont really operate on Fridays so it's what I'd call a 'retro customer experience' and of course you'll need to buy two senders as thats their minimum order.
I recommend trying Jan between 10.00am & 4.00pm Monday to Thursday but obviously avoid lunch times, tea breaks, natural breaks and forget the leak harvesting season altogether of course
. After trying for days just to buy a couple of senders off them I did start to feel I had been caught some sort of 1970's Welsh time vortex but I got there in the end, to be fair to Nial who was really helpful he did say Redline Components Ltd stock the TT6811-03 sender as it's used on Caterhams and they should be able to supply them in singles.I Googled Redline Components Ltd and got this very basic one page website....
http://www.redlinecomponents.co.uk/
As it's not a proper online shop and my mate wanted a sender too I thought it was just as easy to keep trying to buy from Caerbont direct, but who knows Redline Components Ltd might even work a full week so I guess they're worth a shot
Anyway, I must get back to work as sadly Friday is a normal working day for me
Happy sender shopping chaps, I wish you all good luck with it.
Dave.
The purpose of a thread is to tell a story, and if people are interested in this I'm sure they'll invest 10 minutes to read the full story.
Of course the story is not over, we really need some more feedback from people who've tried the TT6811-03 sender, the findings of one do not amount to a fully confirmed success by any stretch.
I'd want to hear the feedback from a few more who've tried the TT6811-03 sender before we fully endorse it.
Of course the story is not over, we really need some more feedback from people who've tried the TT6811-03 sender, the findings of one do not amount to a fully confirmed success by any stretch.
I'd want to hear the feedback from a few more who've tried the TT6811-03 sender before we fully endorse it.
Good stuff chaps
Please do keep the feedback coming as so far only I and my friend Paul (Sir Paolo) have fitted the TT6811-03, both of us are seeing promising early results but it would be good to see the comments from others who've tried this sender.
As previously covered please be aware the sender is approximately 8mm shorter than the original.
Since my video test when I first fitted the sender I have seen a few more over temp spikes, the spike only happens once and at the point my 88 degree thermostat opens, as the true coolant temp reaches 90c in the inlet manifold the gauge overshoots reaching 98c for just a second or two before quickly returning to the correct 90c.
This over temp spike on the gauge is a proven false reading as confirmed by my Canems software that takes its reading from the original Lucas ECU sender sat in the inlet manifold right next to my new TT6811-03 sender, I'm not in the least bit concerned about this momentary spike as it only lasts a second or two and is proven false.
I suspect the short length of the sender is why I'm seeing the momentary over temp spike and it may also be my TVR would benefit from a quick bleed of its cooling system, it's possible the shorter sender is momentarily seeing a pocket of steam instead of true coolant contact? As I say it'll probably disappear after I've bled the system and other than the momentary temp spike my experiences are that fitting the TT6811-03 sender is a significant improvement over what TVR gave us.
Please share your additional feedback on the TT6811-03 sender here, your contribution will benefit other owners of TVR Chimaeras & Griffiths fitted with Caerbont gauge sets.
Thanks, Dave.
Please do keep the feedback coming as so far only I and my friend Paul (Sir Paolo) have fitted the TT6811-03, both of us are seeing promising early results but it would be good to see the comments from others who've tried this sender.
As previously covered please be aware the sender is approximately 8mm shorter than the original.
Since my video test when I first fitted the sender I have seen a few more over temp spikes, the spike only happens once and at the point my 88 degree thermostat opens, as the true coolant temp reaches 90c in the inlet manifold the gauge overshoots reaching 98c for just a second or two before quickly returning to the correct 90c.
This over temp spike on the gauge is a proven false reading as confirmed by my Canems software that takes its reading from the original Lucas ECU sender sat in the inlet manifold right next to my new TT6811-03 sender, I'm not in the least bit concerned about this momentary spike as it only lasts a second or two and is proven false.
I suspect the short length of the sender is why I'm seeing the momentary over temp spike and it may also be my TVR would benefit from a quick bleed of its cooling system, it's possible the shorter sender is momentarily seeing a pocket of steam instead of true coolant contact? As I say it'll probably disappear after I've bled the system and other than the momentary temp spike my experiences are that fitting the TT6811-03 sender is a significant improvement over what TVR gave us.
Please share your additional feedback on the TT6811-03 sender here, your contribution will benefit other owners of TVR Chimaeras & Griffiths fitted with Caerbont gauge sets.
Thanks, Dave.
Ok, so lets put the results into images we can all view easily........
A true 55c
A true 60c
A true 69c
A true 80c
A true 86c
A true 88c
A true 95c
A true 97c
Ok so I think that confirms it..... The new 1/8 NPT thread TT6811-03 sender from Caerbont is cheaper and works way better than the original 5/8 UNF threaded sender TVR fitted to a tread adapter which effectively creates a less than ideal blind spur where coolant struggles to surround the sender as well at should.
Being a 1/8 NPT thread it's also a straight swap for the Range Rover sender which sits in a much better position in the inlet manifold, this means for roughly £15.00 and 10 minutes work swapping senders every owner of a TVR Chimaera or Griffith fitted with the common Caerbont gauges can finally enjoy far more accurate and consistent coolant temperature readings.
I hope this discovery helps my fellow TVR owners?
Best regards, Dave
NB: If anyone is still running the Range Rover sender with a resistor I recommend replacing it with a TT6811-03 sender immediately, the resistor mod is not reliable and may disguise an overheating situation that could end very badly indeed!
A true 55c
A true 60c
A true 69c
A true 80c
A true 86c
A true 88c
A true 95c
A true 97c
Ok so I think that confirms it..... The new 1/8 NPT thread TT6811-03 sender from Caerbont is cheaper and works way better than the original 5/8 UNF threaded sender TVR fitted to a tread adapter which effectively creates a less than ideal blind spur where coolant struggles to surround the sender as well at should.
Being a 1/8 NPT thread it's also a straight swap for the Range Rover sender which sits in a much better position in the inlet manifold, this means for roughly £15.00 and 10 minutes work swapping senders every owner of a TVR Chimaera or Griffith fitted with the common Caerbont gauges can finally enjoy far more accurate and consistent coolant temperature readings.
I hope this discovery helps my fellow TVR owners?
Best regards, Dave
NB: If anyone is still running the Range Rover sender with a resistor I recommend replacing it with a TT6811-03 sender immediately, the resistor mod is not reliable and may disguise an overheating situation that could end very badly indeed!
QBee said:
I have to mention, when I ordered I exopected to have to buy two, but they let me buy one. The downside is that carriage is £7 plus VAT (DPD next day from Swansea).
Buying two senders equated to £15.10p each including VAT & carriage, so how much is a single sender Anthony?QBee said:
Just finished fitting mine... the job - b
d for access, innocent looking location after disconnecting everything I could
So you shouldn't have had to go through all that mate, I did mine in 10 minutes with a variety of sockets tacking the job from directly above the sender, there is definitely do need to remove the ECU sender.d for access, innocent looking location after disconnecting everything I couldAre you able to plug into your Emerald ECU to see true coolant temp on your laptop and then compare it with the gauge? This will give us a second review of accuracy, certainly my Canems software temp reading now follows my gauge perfectly but it would be good to see what you get on your Emerald?
Anyway, glad it worked out for you
My senders came in just a few days so I wouldn't worry, however I'm not sure why they charged you £40.80 for two when I paid £30.20 for two all in with VAT and carriage? What we do know is asd2001 got the same deal as me making each sender £15.10p and Qbee bought a single for £21.40 plus next day delivery at £7+ VAT so I'm assuming he paid somewhere in the order of £30 for his one?
I guess at that price he could have just bought two for the same price and had a spare left over, or resold it to a fellow TVR Chin/Griff owner, but knowing Anthony as I do he probably would have just given it away to help someone out.
When I discovered this sender I did consider keeping quiet about where there came from, buying a job lot of them, then re-distributing to the TVR community at £5.00 profit each. But that's not in line with what I believe the TVR community stands for so I prefer to share the information at no personal gain even though I know the TVR parts specialists read these pages and will undoubtedly soon be offering the Caerbont 1/8 NPT TT6811-03 sender and profiting from my research.
Actually I have no issue with this, the TVR parts specialists play an important role in keeping our cars on the road and make buying tried and tested components easy for us all, so we really should be supporting them or we stand to lose a valuable source of parts. The TVR parts specialists will also offer Chimaera & Griffith owners the convenience of buying this sender in singles, so I wish them all the best and hope they make a small profit from each one they sell.
Don't forget though chaps Caerbont told me the Caterham parts specialist Redline Components Ltd also sell the TT6811-03 sender and apparently they will supply them singularly, I've no idea how much they charge but someone may want to try this route and share the price on this post?
I also could have shared all this information on Facebook but within a day the information will be lost to the wind whereas Pistonheads continues to be a vast permanent and ever growing searchable archive of extremely useful information that will continue to benefit TVR owners, and hopefully for years to come. Facebook is great for folks who like to post videos of their latest exhaust mod or show others they've just cleaned and waxed their car, horses for courses but I find all that behaviour rather fatuous
Pistonheads on the other hand is where we discuss and share properly useful information to the eternal benefit of others, I firmly believe as a community of fellow enthusiasts we should support each other and share. 'What goes around comes around', there are plenty of great guys in our community like Peter (Phazed) that have helped me out in the past, only recently Anthony (QBee) sent me a specific shaped stepper motor hose and then refused to charge me a penny for it.
In my book it's people like this who are true TVR enthusiasts
Dave.
I guess at that price he could have just bought two for the same price and had a spare left over, or resold it to a fellow TVR Chin/Griff owner, but knowing Anthony as I do he probably would have just given it away to help someone out.
When I discovered this sender I did consider keeping quiet about where there came from, buying a job lot of them, then re-distributing to the TVR community at £5.00 profit each. But that's not in line with what I believe the TVR community stands for so I prefer to share the information at no personal gain even though I know the TVR parts specialists read these pages and will undoubtedly soon be offering the Caerbont 1/8 NPT TT6811-03 sender and profiting from my research.
Actually I have no issue with this, the TVR parts specialists play an important role in keeping our cars on the road and make buying tried and tested components easy for us all, so we really should be supporting them or we stand to lose a valuable source of parts. The TVR parts specialists will also offer Chimaera & Griffith owners the convenience of buying this sender in singles, so I wish them all the best and hope they make a small profit from each one they sell.
Don't forget though chaps Caerbont told me the Caterham parts specialist Redline Components Ltd also sell the TT6811-03 sender and apparently they will supply them singularly, I've no idea how much they charge but someone may want to try this route and share the price on this post?
I also could have shared all this information on Facebook but within a day the information will be lost to the wind whereas Pistonheads continues to be a vast permanent and ever growing searchable archive of extremely useful information that will continue to benefit TVR owners, and hopefully for years to come. Facebook is great for folks who like to post videos of their latest exhaust mod or show others they've just cleaned and waxed their car, horses for courses but I find all that behaviour rather fatuous
Pistonheads on the other hand is where we discuss and share properly useful information to the eternal benefit of others, I firmly believe as a community of fellow enthusiasts we should support each other and share. 'What goes around comes around', there are plenty of great guys in our community like Peter (Phazed) that have helped me out in the past, only recently Anthony (QBee) sent me a specific shaped stepper motor hose and then refused to charge me a penny for it.
In my book it's people like this who are true TVR enthusiasts
Dave.
QBee said:
I have had a chat with our good friend from south of Dorking about booking a track day. It's the only real way to test the gauge and sender at the top end.
20 laps of Brands Hatch Indie circuit on a sunny afternoon with the turbo on full boost should tell me all I need to know.
I will return to the pits with the fans going full tilt and the oil at around 120 degrees.
I will report back on water temperatures.
It will be a few weeks, so don't hold your breath.....
In the mean time mate, if you can plug into your emerald ECU the software on your laptop will display a very accurate digital readout of the true coolant temperature which you can compare with your gauge.20 laps of Brands Hatch Indie circuit on a sunny afternoon with the turbo on full boost should tell me all I need to know.
I will return to the pits with the fans going full tilt and the oil at around 120 degrees.
I will report back on water temperatures.
It will be a few weeks, so don't hold your breath.....
This method and perhaps the use of an infra red thermometer gun are the only true ways to test the accuracy of your gauge now you have the new TT6811-03 sender fitted.
MisterRay said:
Fitted the new sender and plugged Rovergauge in as I am running the original Lucas management system albeit with a Tornado chip. Gauge reads spot on all the way up to 99C at which point I chickened out and reconnected the fans rather quickly. The temperature back down was tracked correctly as well.
Perfect ianwayne said:
Smiths instruments list this item with an alternative part number of 71167 on a Caterham:
https://www.smiths-instruments.co.uk/temp-transmit...
The resistance range is quoted as 1158 to 44 ohms if that is of any help.
Smiths Instruments are Caerbont, the two are one and the same.https://www.smiths-instruments.co.uk/temp-transmit...
The resistance range is quoted as 1158 to 44 ohms if that is of any help.
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