The Central Hub for DSM Community and Information

For 1990-1999 Mitsubishi Eclipse, Eagle Talon, Plymouth Laser, and Galant VR-4 Owners. This is where the DSM platform history is documented and archived. Log in to help us in our mission, and to remove most ads from the browsing experience.

2G Best Placement For Oil Temp Sender

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

Blurred Talon

15+ Year Contributor
2,307
44
Jan 2, 2004
Paradise, NL, Canada
I was wondering where is the best spot to mount the oil temp sender?

I use to have it remote mounted off the OFH along with my pressure sender. Now I'm wondering if it should be post oil cooler or in the pan?
 
Im in the same boat, im planning on getting the evo 9 ofh as it has more ports for items like this! I read that the temp is best in the oil pan, as thats not an option for me at the moment I want to place it in the ofh but I dont know what port! So maybe a T in one of the oil cooling lines, but unsure if it will work
 
I was wondering where is the best spot to mount the oil temp sender?

I use to have it remote mounted off the OFH along with my pressure sender. Now I'm wondering if it should be post oil cooler or in the pan?

Im not 100% on the best but I bought a shortblock with a Moroso pan that has provisions for the temp sensor on it. If you can clear a sandwich plate on the OFH id look into that. It comes with 3 ports I believe.

Sorry its 4 ports on it.
http://www.streettunedmotorsports.com/parts/prosport_oil_filter_sandwich_plate.htm
 
Im not 100% on the best but I bought a shortblock with a Moroso pan that has provisions for the temp sensor on it. If you can clear a sandwich plate on the OFH id look into that. It comes with 3 ports I believe.

Sorry its 4 ports on it.
STM - PROSPORT OIL FILTER ADAPTER (SANDWICH) PLATE | PSOPOT M20XP1.5

Adding this is a last resort, as its tight anyway for any 2g as the filter goes towards the DP and any closer we will have issues with the filter! Thats why I said about the evo 9 ofh as that faces down and has many ports for these items, the 7bolt guys cant get the moroso oil pan its only for 6 bolt blocks, but if needed we would have to weld a bung on there
 
is there a way of Teeing the oil drain plug to house it and the drain plug its self? just a wacky idea i had,
 
You could see if you can find an adapter plug that has a threaded hole in the middle to accept a sensor. It'd look something like this. Might not be easy to find, but I'd guess they're out there. This is the same type of thing I used to install my transmission temp gauge. I replaced the drain plug with an adapter plug and put my sensor in there.

You must be logged in to view this image or video.
 
You could see if you can find an adapter plug that has a threaded hole in the middle to accept a sensor. It'd look something like this. Might not be easy to find, but I'd guess they're out there. This is the same type of thing I used to install my transmission temp gauge. I replaced the drain plug with an adapter plug and put my sensor in there.

You must be logged in to view this image or video.

Thats pretty crafty. :thumbup:
 
that is something i will look into, dont suppose you know the size of the sensor thread size as i can get the drain plug info from my old plug
 
I'd guess most temp sensors will be 1/8" NPT. All depends on what you choose though.

ok i will take it to my local fastner specialist and see what they say, if not i will have to get one made.
 
Two other things to think about.

1. I'm not sure how far the temp sender would stick in and if it'd be anywhere near the pickup. You don't want it restricting anything.

2. If your car is lowered, make sure to check the angle of the oil drain plug and think how it'd look if you had an extra couple inches sticking out. You don't want to rip the sensor out and then have your pan drain itself.


The Autometer 2267 adapter should be what you're looking for if using a 1/8" NPT threaded temp sensor.
 
Two other things to think about.

1. I'm not sure how far the temp sender would stick in and if it'd be anywhere near the pickup. You don't want it restricting anything.

2. If your car is lowered, make sure to check the angle of the oil drain plug and think how it'd look if you had an extra couple inches sticking out. You don't want to rip the sensor out and then have your pan drain itself.


The Autometer 2267 adapter should be what you're looking for if using a 1/8" NPT threaded temp sensor.

Thats why I thought about a Tee so it might try and take it away from going down facing! My sensor is not that long if I remember, I will have to measure it and get a rough idea of how far it will stick out, and thanks for looking for that extending bung

I put it in the oil filter housing. I removed it after a few months when I realized it provided no useful information (for me at least).

So your saying the OFH idea does not work for the temp sensor
 
No, it does work. I just took it out because knowing what the oil temperature was didn't really provide me with any useful info.

Oh ok thats good to know then cheers, once I get my evo 9 ofh I will have a few extra ports spare so I might consider the easier way.
 
Correct me if I am wrong, because it's just something I recall hearing a long time ago, but isn't oil temp normally within 10-15*F +/- coolant temp? Seems sorta useless to me if that is the case, i'd much rather have a real oil pressure gauge vs the factory semi useless unit.
 
Correct me if I am wrong, because it's just something I recall hearing a long time ago, but isn't oil temp normally within 10-15*F +/- coolant temp? Seems sorta useless to me if that is the case, i'd much rather have a real oil pressure gauge vs the factory semi useless unit.

You are correct that oil and water temps will typically trend together. However, for my car which I'm building for road racing, having those individual temps will tell me more data than just assuming they're trending together. This will help me figure out if my radiator is seeing enough air to effectively cool or not (if no, ducting would need to be added), as well as tell me if my external oil cooler is doing its job well, too well, or not well enough.
 
In my experience they don't trend together at all. The oil runs at a much higher temperature than the coolant during actual racing . 260-280F for oil and 195F coolant is a common correlation I remember seeing during my summer events last year. I'll see the oil temps drop down in the 220 range during slow driving with coolant still staying relatively steady. It may be true that they correlate with a scale and an offset, but definitely not a static offset alone like was suggested.

I have mine in my oil filter housing mainly for convenience of install, but I also wanted it post-engine pre-cooler to see what the max oil temps were. Oil pan is going to be post-cooler, isn't it?
 
You are correct that oil and water temps will typically trend together. However, for my car which I'm building for road racing, having those individual temps will tell me more data than just assuming they're trending together. This will help me figure out if my radiator is seeing enough air to effectively cool or not (if no, ducting would need to be added), as well as tell me if my external oil cooler is doing its job well, too well, or not well enough.


All the car's that I've ever had with an oil temp sender (Evo9 MR, and my SRT8) both have them incorporated into the drain plug. I would agree with everyone who said it needs to be in the pan. My SRT-8's oil temps usually run in the 140-160* range, while I have a 180* t-stat in the car. It does however take quite a bit of time for the oil to get up to temp in relation to the coolant temp.
 
They will typically correlate in a more stock setup as before suggested, but I would not expect them in a functional setup like yours. I also think this would also prove more true in water-cooled oil cooler setups than air cooled.

Thanks for the data input John, as I didn't have any to cite on how far they'd fluctuate on a road course.
 
Add Value - Be Respectful - No Trolling - No Misinformation - Participate Often!
Support Vendors who Support the DSM Community

Build Thread Updates

Latest Classifieds

Back
Top