Where to put the oil temp sender ?
Where to put the oil temp sender ?
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Discussion

peterpsg

Original Poster:

813 posts

263 months

Friday 10th March 2006
quotequote all
Now that the factory have got me an Oil Temp gauge & sender on order, I have to decide the best spot in the oil system to put the sender.

Any ideas? (Bearing in mind I have a dry sump system, with a soon to be fitted remote filter)

Cheers,
Pete

pb3

1,064 posts

275 months

Friday 10th March 2006
quotequote all
arh then that is easy, put it in the remote filter housing. They normally have a tapping or at least a flange that you could drill and tap, the latter is what I did.

peterpsg

Original Poster:

813 posts

263 months

Friday 10th March 2006
quotequote all
Hmmm, good idea though where would be the 'most accurate' point to put the sender?

1. In the lines running from the sump scavange points to the dry sump pump.
2. In the lines running from the dry sump pump to the dry sump tank.
3. In the return line from the tank to the pressure stage of the pump.
4. In the line from the pressure side of the pump to the filter (or in the filter assembly).
5. In the line between the filter & the oil cooler (or in the oil cooler).
6. In the line between the oil cooler that returns to the blanking plate where the filter was mounted.

I was going to opt for mounting it into the blanking plate, or number 6, though that is the point when the oil would be at it's coolest, so is it better to monitor it when it just comes out of the engine instead, i.e. when it is the hotest. Or perhaps, like they do in race cars, both in and out temps are recorded so as to gauge the cooling systems performance!

Cheers,
Pete


p.s. For those that are wondering (I was one until I had it explained!), in the dry sump system, the internal oil pump is removed and the normal galley that originally fed the oil filter is blocked, thus you only need to inject oil in to the system where the filter was (via the normal inlet path), and extract it from the bottom of the sump. The blanking/return plate covers both the in and out holes where the OEM filter mounts are, but, since the internal pump is removed and the pressure line from it blocked no oil will flow backwards into the system, so you just connect up the return line from the oil cooler here.

B1 ECC

389 posts

284 months

Friday 10th March 2006
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[redacted]

peterpsg

Original Poster:

813 posts

263 months

Friday 10th March 2006
quotequote all
B1 ECC said:
I have mine in the line from the cooler exit to the main oil gallery (previously oil filter mounting). It's a Petersen in line adapter for the sender, that way the temp you see on the guage is the temp of the oil thats about to enter the engine!


Hmmm, good idea Ian, I should have orderd one of those as well.

Is this the item you have?
www.petersonfluidsys.com/Photos/Itmpprt.jpg

Cheers,
Pete

steve_D

13,802 posts

287 months

Friday 10th March 2006
quotequote all
Anywhere before the oil cooler or anywhere after it. The decision is do you want to read before or after cooling.

Steve

peterpsg

Original Poster:

813 posts

263 months

Friday 10th March 2006
quotequote all
I guess the best idea for a single measurement is to measure where Ian does, so then at least you know what the incomming oil temp is, and if it's getting too high, then your cooling system is inadequate...

B1 ECC

389 posts

284 months

Friday 10th March 2006
quotequote all
peterpsg said:
B1 ECC said:
I have mine in the line from the cooler exit to the main oil gallery (previously oil filter mounting). It's a Petersen in line adapter for the sender, that way the temp you see on the guage is the temp of the oil thats about to enter the engine!


Hmmm, good idea Ian, I should have orderd one of those as well.

Is this the item you have?
www.petersonfluidsys.com/Photos/Itmpprt.jpg

Cheers,
Pete

That's the one!

andygtt

8,345 posts

293 months

Saturday 11th March 2006
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Playing the game a bit here.... but wouldnt you want to measure oil at its hottest?

at standstill the cooling will not be as good as at 80mph.... but it may well read the same temp going into the engine. due to the cooling differences!

peterpsg

Original Poster:

813 posts

263 months

Saturday 11th March 2006
quotequote all
Yeah, it's a hard decision, though the oil's going to get hot in the engine anyway...

The place I'm getting my remote filter (CM/Canton)& related parts (Peterson) from say they usually run 2 sensors either side of the oil cooler and datalog them both, which allows them to compare the temperature drop accross the cooler. They've tried many coolers, including the Mocal/Laminova/Setrap type with the circular core plumbed into the radiator(like UltimaCZ's).

They steered me to a place in the states that does a plate type one, which they said was the best they'd tested, so I contacted them and they suggested a 10 or 13 plate version of this www.crracing.com/custom_built/external_heat.shtml, thought with the 13 plate they thought it'd be usefull to have a proportioning valve www.crracing.com/custom_built/oil_cooler_bypass.shtml, as the oil might overcool on colder days.

The guy in the states also took a look at the Ultima website, and made negative comments about the stock radiators, likening it to the GT40 replica types that he'd been involved in the past, he then pointed out that he could do an all alluminium radiator with the oil cooler built in, www.crracing.com/radiators/late_model_heat.shtml, if I was going to build from scratch and was going to add a dry sump I'd definately consisider it, but I think for my requirements the stock radiator is fine - though a fan upgrade is an option...


So with my dry sump system I'm planning to do the following, with most of the parts on the way already.

1: Remove the oil filter & oil cooler sandwich plate and fit a blank off plate with a single return line. (Peterson)

2: Mount a remote oil filter in the line after the pressure stage of the dry sump pump, but before the oil cooler. (CM/Canton)

3: Replace the standard air type oil cooler with a water system cooled type fed downstream of the filter. (CRRacing/Mocal/Setrap)

4: Mount an inline oil temp sender tap in point 'somewhere' in the system. (Peterson - Cheers Ian)

5: Mount an oil temp guage and sender. (Factory Supplied - Thanks Rich/Ted)


Add to this lot, refitting the transaxle (getting a Quaiffe ATB Diff added), and mounting the shiney new SPA plumbed fire extinguisher system (Cheers Alan), hopefully all ready in time for RAF Marham!!!


ps. I'm not connected to any of the companies I mentioned! But if any of them want to make a donation...


stig

11,823 posts

313 months

Sunday 12th March 2006
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Given that the sandwich plate requires an extension collar, it's easiest to tap straight into it.

peterpsg

Original Poster:

813 posts

263 months

Sunday 12th March 2006
quotequote all
I'll see if they can get the part in on my current order, otherwise I'll probably end up doing just that...