Oil Cooler Questions

[SeanB]

Hey everyone,

I am getting ready to purchase the baffling kit and oil cooler mount for my Aerosport IO-375 (low compression, 195 hp) RV7 project. I've already purchased the RV Bits Carbon Plenum. Looking at the archives provides plenty of variety with respect to brand, mounting ideas, mods, etc. for the oil cooler. I read some have even mounted to the firewall (maybe with the -10 mount ?).

Looking for pics, suggestions on brand, number of rows, etc. How difficult it was to install something "non-factory" would also be appreciated. What worked for you? Would you do it the same way again?

Thinking about using Van's shutter to warm it up in the Colorado winters, but want to keep her cool the rest of the time.

Thanks!

[g zero]

I mounted a 17 row ( Robinson R22) oil cooler off the fire wall 5"x6" oval duct feeding it , works perfect in Florida .( can email you pics )

[lr172]

I used a Motronic. It is inexpensive, well built and light. I think that I got a 7 or 8 row and it keeps my O-320 (160 HP) temps under 190 in 90* + ambient temps. These units are much smaller and lighter than the aviation versions as they are more efficient. It is mounted on the baffling. This is why I like the light weight, it helps keep it from destroying the baffling. Although I did substantially reinforce that corner of the baffling.

Larry

[SeanB]

g zero...pics would be great. Thanks.

[RViter]

Originally Posted by SeanB

g zero...pics would be great. Thanks.

Not flying yet - mounted the oil cooler from the R22 copter, (0-360-J2A) on the firewall using the RV-10 mount, with modifications. (Added angles)

http://www.mykitlog.com/users/displa...=179124&row=35

Anticipate a shutter mechanism - for 'colder' climates. It's not always 115 degrees in Arizona.

[SeanB]

Thanks for the responses so far.

I hadn't heard of the Robinson R-22 coolers being utilized. Already two responses indicating that unit. I'll look into it.

I kind of like the idea of the RV-10 mount to the firewall. Seems it will be out of the way and solid. I assume you integrate some of the angle bracing of the firewall for support.

The pictures and build sites are very helpful. Thanks again!

Any others?

[dave4754]

Great pics of that firewall mount, however, wont that be pretty hot for the pilot on warm days?

Dave

[N941WR]

My O-360 started life with the "stock" Niagara oil cooler mounted on the baffle behind cylinder #4 and I quickly found it wasn't up to the task.

I ordered a Stewart Warner 10599R oil cooler. The reason was this is very close to the same size as the Niagara it was replacing.

I did have to widen the platenuts up, maybe an 1/8 of an inch. I also had to add a stiffener to the baffle as the original baffles cracked. This is a picture of what I'm talking about.

A friend installed his oil cooler on his firewall and ran a 3" scat tubing to it. That didn't work out very well so we made this transition for 4" scat tubing and his cooling problems went away.

[alpinelakespilot2000]

Originally Posted by N941WR

My O-360 started life with the "stock" Niagara oil cooler mounted on the baffle behind cylinder #4 and I quickly found it wasn't up to the task.

I ordered a Stewart Warner 10599R oil cooler. The reason was this is very close to the same size as the Niagara it was replacing.

Hi Bill-
Do you have any sense of how much your 10599R might have lowered your oil temps?

[Randy]

If you have oil squirters on your IO-375, be prepared for oil temps as much as 20F higher than an engine without them.

I have IO375, low compression, oil squirters, RV10 cooler mount and use 4" scat to feed it. SW8432R oil cooler.

Oil temperatures are still a problem and I have checked ALL of the normal things to check.

Now adding second cooler to see if things get under better control.

My temps will not stabilize at 220F at best power setting but I can keep it under 200F with my cowl flaps closed running lean of peak. I am hoping I can run at ROP best power settings when I want to with the second cooler.

Will post results after testing with second cooler.

Randall in Sedona