Oil Pressure Sender
Discussion
Chimpabollics said:
Simon says said:
S27 said:
http://www.pistonheads.com/sales/3462646.htm oil pressure sender £28 ebay item number for BIN Ebay is : 130606143939
SP
Purchased 2 of those a little while ago, does exactly as you would expect of a genuine product and at that price i at to have a spare, gauge is behaving itself once more and no worries of build quality or compatability issues.SP
Edited by S27 on Thursday 8th December 18:48
Edited by Simon says on Thursday 8th December 23:44
By fitting an original I can go back to the fun old days of seeing pressures 50% lower than they really are.
Why I am bothering with my cheaper & more accurate sender I shall never know.
Originality is key here, by fitting the original sender I can increase the value of my car by thousands.
Who cares if the original sender shows the wrong readings
who says the gauge reads incorrectly with the correct sender? my gauge mirrors my Snap-On piped test gauge bar a few PSI is that accurate enough for ya? 25psi idle 55psi over 2k HOT as I said earlier at that price its a no brainer for me 
Edited by Simon says on Friday 9th December 09:46
Simon says said:
WTF who says the gauge reads incorrectly with the correct sender? my gauge mirrors my Snap-On piped test gauge bar a few PSI is that accurate enough for ya? 25psi idle 55psi over 2k HOT.............
Further proof that TVR didn't always do it wrong and that a lot of people tinkering with their cars should leave it to the professionals who obviously know better. who says the gauge reads incorrectly with the correct sender? my gauge mirrors my Snap-On piped test gauge bar a few PSI is that accurate enough for ya? 25psi idle 55psi over 2k HOT.............I concur Simon, maybe it is a problem more with the CAI gauges, or even mixing up CAI / ETB senders. There is still the quesion of the durability of these senders (which you aren't going to see for a few years yet at least), but more importantly this 'new' idiom that low pressue readings are just down to a faulty sender means that someone IS certainly going to trash their engine eventually because they ignore the signs. Logically most of us would heed the warning, take it easy/paranoid until a prpoer mechanical test would verify the cause.. I'd certainly be wanting to to keep checking any of these 'mods' with a calibrated pressure tester (from someone whose tinkered with oil ways even linking the main galleries at the rear of the engine 
)
)spend said:
There is still the quesion of the durability of these senders (which you aren't going to see for a few years yet at least)............
Maybe not all measured in years according to at least one Pher:http://www.pistonheads.com/gassing/topic.asp?h=0&a...
Sort of related, my chimaera drops its pressure after a run down the motorway. Pressure rises ok when fired up, but after driving on motorway , i will cone off slip road and the next time i hit some lights the pressure drops below 10. As soon as engage drive it rises again. No lights come on, and car idles fine ect.
? Is this normal, apologies for being a non mechanic type.
? Is this normal, apologies for being a non mechanic type.
Else said:
Just had a look at the link, £111.95 now!! 
That's inflation for you 
Seriously though, I suspect a typo!
Last week it was £11.95 plus £2.85 postage to make £14.80.
Someone has just hit in an extra 1 on their keyboard to make £111.95.
Email the seller & I'm sure he'll correct it.
ChimpofDarkness said:
Robert Lees said:
Sort of related, my chimaera drops its pressure after a run down the motorway. Pressure rises ok when fired up, but after driving on motorway , i will cone off slip road and the next time i hit some lights the pressure drops below 10. As soon as engage drive it rises again. No lights come on, and car idles fine ect.
? Is this normal, apologies for being a non mechanic type.
Have a look at the post here, & on page four Mr Supercharged revealing tests of the different oil pressure senders available:? Is this normal, apologies for being a non mechanic type.
http://www.pistonheads.com/gassing/topic.asp?h=0&a...
It's now been proven my cheapo £15.00 EBay sender is the most accurate of the lot, which comes as no surprise to me TBH.
It shows the correct pressure whereas the original sender typically shows 25 lbs less than the true pressure.
The original senders are not only inaccurate (badly matched to the gauge), they are also notoriously unreliable, I've only been testing EBay sender for 2 years, but so far so good on the reliability stakes.
The needle on my gauge now responds much faster with the £15.00 Ebay sender & consistently shows the correct operating pressures when tested against a good quality mechanical Sykes Pickvant gauge.
You simply need this to solve your problem:
http://www.ebay.co.uk/itm/Universal-Engine-1-8-NPT...
The key thing to remember here is if you choose to replace like for like by fitting an original TVR sender, you will just get the same inaccurate readings.
To see the correct reading & match the later magnolia faced TVR Caerbont gauge you need a 33 - 240 Ohms (0 - 100 PSI) sender.
Just follow my link above to get the correct one, & for £15.00 and some very simple wiring changes you will for the first time see the correct oil pressure and have an accurate OP gauge.
Sardonicus said:
ave this is strange as I have the Caerbont gauges and I have tried 2 of these OE style senders both mirror the diagnostic mechanical gauge readings give or take 3/4 psi
Well it's fair to say I only tested a sample of two.1) My original as fitted by TVR
This only ever showed a maximum of 35psi (if I was lucky, on a good day).
This is just like I've see on every other Chim or Griff I've come across, the gauge also ends up displaying worrying low idle pressures on a hot day.
2) My cheapo £15-00 EBay sender
With this fitted the needle shoots up to a running pressure (over 1500 rpm) of 60psi falling to 55psi on hotter days & much healthier idle pressures too.
I knew my TVR wasn't making 30psi when it had the original sender, the EBay sender seemed to deliver way more realistic figures, but to be sure I tested it.
So I tested the true oil pressure with a SP gauge that I trust, sure enough the figures seemed to be within a lb or 2 of the TVR gauge with it's new EBay sender.
I guess that's what I mean by the originals being badly matched to the gauge.
Of course the ones now being sold in the PH classifieds may be better, I can only speak for my original TVR one vs the £15.00 EBay unit.
However, three things I can say with absolute confidence are:
1) My Rover V8 does not make the 30psi at 2000rpm that the original sender tried to tell me it does
2) My original TVR sender was not correctly matched to my TVR gauge
3) My cheapo EBay sender was much much better in every respect
so benching against your pattern unit wont tell you much, this is how my original failed by under reading 
I am certain they did not leave the factory like this 
mb450 said:
That one earths through the block like the TVR original, I prefer the one with the separate earth terminal for more consistent reliable readings.This one is a bit more pricey but is probably the best out there as it gives the most accurate readings and is better made than all the rest, so in theory should last longer.
http://www.ebay.co.uk/itm/150918952129?_trksid=p20...
thanksGassing Station | Chimaera | Top of Page | What's New | My Stuff