Do we have an engine oil cooler core similar with the tranny fluid cooler?
If we do...where is it located?

 

It's like the 2jzgte oil cooler kinda, it's mounted on the opposite side from the oil filter housing

 

It is exactly like the 2JZ-GTE oil/water cooler/heater. When the oil is colder than the coolant, the coolant heats up the oil. When the oil is hotter than the coolant, the coolant cools the oil. It works fine for the street but is completely inadequate for the track. I have considered a sandwich plate and separate air/oil cooler to solve the track problem, but haven't taken the time to fully engineer the solution. It is sorely needed if you drive at the track.

 

We do have an engine oil cooler and it is located on the reverse end of the oil filter assembly.

This type of cooler works in conjunction with the engine water/anti-freeze coolant. It is an oil to water cooler which is about the best way to go with a street driven car. It is not real efficient but a lot better than nothing.

Real engine oil coolers are air to oil coolers that if large enough, work great. Problem is that when they are used on a street driven car in cold weather they will over cool the oil. That is not good. Back in the eighties air to oil coolers were used on a lot of Ford heavy duty pick ups (Good source for a cheap cooler). The result was not to good in cold weather though.

Ours, because it can also use the radiator coolant to heat the oil as well as cool it is a better design for a street car. It can also help heat that ten quarts of oil we have.

 

Lorenr where you around in wa?

 

If anyone is interested, I have an IS-F oil filter housing (bracket in Toyota talk) new in the box. Would be good for R&D to develop a cooler. -12 lines would be the appropriate size.

The bracket from the RC-F will likely bolt up.

 

Justind27,

I live most of the time in Vancouver, WA. Have an 11, SFP.

Always been a "nut case" for hot cars, especially "sleepers".

Loren

 

The RC-F has a parallel oil/water oil/air system just like the transmission in the IS-F. Apparently Lexus figured out the oil cooling in the IS-F is inadequate for track use. It might make sense to just buy the Lexus piece to bolt to the engine and add a cooler with hard part of the plumbing already sorted out by the factory.

 

May we get pictures from RCF factory cooler sandwich to see how to add cooler on ISF.

 

How many bars on the factory oil temp gauge is acceptable before being considered dangerous or too hot?

 

RR Racing just came out with an oil cooler kit:

http://www.rr-racing.com/RR-Racing-O...isfock0001.htm

 

Why would you go through the trouble and expense of doing this when we already developed a bolt on oil cooler kit for the ISF? You cannot route the oil cooler lines on the ISF like they do on the RCF, because the RCF has a cooler mounted way over on the side where there is no space on the ISF unless you eliminate the brake duct.

Regarding the question about a higher temp thermostat, 185F Mocal unit we use works very well, it only begins to flow at 185F.


Rafi