More Rear Mount Oil Cooler Questions, Setrab Setup Options

[BeatNavy]

I'm trying to nail down why I'm having oil cooler issues. Specifically, I've blown two sandwich plate adapter seals in the same place / manner. In addition, during my test drives I wasn't necessarily thrilled with the temp drop I was seeing.

First, I'm running the Setrab oil cooler and Setrab sandwich plate adapter. Anyone else running the Setrab sandwich plate adapter without any issues? I know I'm not the ONLY one, but how many people run this as opposed to something like the Mocal setup?

Second, when I contacted Pegasus Racing to order more seals, I spoke to the tech guy who gave me some food for thought. The most interesting thing was he said the oil cooler needs to be mounted with the inlet and outlet ports facing up, otherwise the cooler won't fill up all the way and you won't get ideal (or any) cooling.

Here's my setup with it angled somewhat down for what I hoped was good airflow: http://www.914world.com/bbs2/index.php?s=&...t&p=2826235

Essentially he says the oil takes "the path of least resistance" which could largely be from the inlet port to the outlet port using few of the cooling rows. I assumed the pressure would fill the cooler, but I can see what he's saying. Any thoughts on that? If that's the case, I really need to completely redo my mounting setup and plumbing.

[GregAmy]

Rob, next time I'm driving I can shoot the IR onto the oil change and taco plates and see how well they correlate to the dipstick.

I like the idea of a cooking thermo to check air temps under there.


Edit: as a somewhat-related aside, I'm also surprised at the enginecompartment/air intake temps on my car. I've got the Intake Air Temp sensor inserted into the bottom of the stock D-Jet air cleaner, and I'm regularly seeing IATs of 130F+ at cruise, and that's with the rain tray removed...so that's all going into the intake for cylinder/head cooling. And that's with all new seals all around the engine tin...

[Frank S]

Rob, next time I'm driving I can shoot the IR onto the oil change and taco plates and see how well they correlate to the dipstick.

I like the idea of a cooking thermo to check air temps under there.


Edit: as a somewhat-related aside, I'm also surprised at the enginecompartment/air intake temps on my car. I've got the Intake Air Temp sensor inserted into the bottom of the stock D-Jet air cleaner, and I'm regularly seeing IATs of 130F+ at cruise, and that's with the rain tray removed...so that's all going into the intake for cylinder/head cooling. And that's with all new seals all around the engine tin...

Hi Greg,
I had experienced the same heat soak problem with tha MAT Sensor mounted in the original D-Jet position (plenum). The plenum is physicaly conected to the engine case and has a huge surface are which is not ventilated well close to the engine case, seeing alot of radiation. During normal driving with CHT of 320°F and oil temps around 215°F MAT was around 149°F. With the open element sender mounted inside the snorkel I was able to reduce the MAT reading down to 118°F under the same conditions mentioned above. This was meassured with the raintray mounted at ambient temp of 83°F.

I think you are still meassuring at a not optimal spot or your MAT Sensor is not an open element sensor.

Regards,
Frank

[GregAmy]

0, 01:10 PM' post='2834051']I had experienced the same heat soak problem with tha MAT Sensor mounted in the original D-Jet position (plenum).

[/img]
Thanks, Frank! Yeah, my original design had the IAT, an open-element Delphi, mounted on an adapter plate where the D-Jet CSV was. It didn't take long for me to realize it was a heat soak issue. So a few weeks ago I mounted it on the underside of the stock air filter, inline with the snorkel.

Surprisingly, I didn't see a ton of difference, it went from around 140 down to around 130.

I routed some flexible brake cooling hose from the D-Jet snorkel to the underside of the engine grill yesterday and got it down to 105F, 80F ambient.

I'm actually wondering if I should consider installing a draw-down fan on the underside of the engine decklid.

(IMG:http://www.914world.com/bbs2/uploads_offsite/cdn11.bigcommerce.com-15565-1594834257.1.jpg)

(IMG:http://www.914world.com/bbs2/uploads/post-15565-1594736262.jpg)

[Frank S]

0, 01:10 PM' post='2834051']I had experienced the same heat soak problem with tha MAT Sensor mounted in the original D-Jet position (plenum).

[/img]
Thanks, Frank! Yeah, my original design had the IAT, an open-element Delphi, mounted on an adapter plate where the D-Jet CSV was. It didn't take long for me to realize it was a heat soak issue. So a few weeks ago I mounted it on the underside of the stock air filter, inline with the snorkel.

Surprisingly, I didn't see a ton of difference, it went from around 140 down to around 130.

I routed some flexible brake cooling hose from the D-Jet snorkel to the underside of the engine grill yesterday and got it down to 105F, 80F ambient.

I'm actually wondering if I should consider installing a draw-down fan on the underside of the engine decklid.

(IMG:http://www.914world.com/bbs2/uploads_offsite/cdn11.bigcommerce.com-15565-1594834257.1.jpg)

(IMG:http://www.914world.com/bbs2/uploads/post-15565-1594736262.jpg)

I have my sensor mounted from the top, but the sensor element is twice as long as yours and sticking in the middle of the airstream. Unfortunately I don't have a pic of the sender just one with the sensor mounted.




I see your sensor is also a open element sensor, so I really wonder whay we get so different readings...