Oil cooler questions

[Bigglezworth]

Don't mess with this part. Source a suitable replacement that is guaranteed to hold the pressure. Last thing you want is a blown fitting that quickly depletes the oil from your engine under load.

[Fastguy]

Sorry for keep digging up this thread. Questions I think are almost done.

Are the threads/fittings on the combo cooler a "an-x" standard or are they something metric? I ask because it would be very nice to use the oe part that connects at the oil filter and source some custom length hoses and aftermarket cooler. I'd purchase the mishimoto kit but I don't see how the hoses would be the exact length. This would leave some excess hose, I'd imagine, that would need to be dealt with somehow. IMO this would look sloppy or maybe make the installation of a universal style cooler much more difficult.

I dont think hunk there is anyway the stock cooler is going back on as no one locally will repair it and I'm not about to spend $900 on a new oe one.

[Nkirk99]

In terms of the lower combined cooler. If you were doing a manual conversion andtherefor not using and blocking off the upper core. Would it be feasable to use both the upper and lower for engine oil cooling. Looking at the large picture provided by fastguy. If you had a custom line that moved the supply line into the left hand side, unused upper core (previously the trans cooling return exit) and on the other side a small u shaped line joining bottom and top cores therefor the engine oil would enter in the top left, travel to the right, then down into the bottom core and out the orignal exit. Just a thought.... Do able, or silly?

[SteveKen]

I thought of this when I performed my first conversion and decided against it. The diameter of transmission lines are noticeably smaller and I figured that there might be flow issues.

I still think that the aftermarket Setrab or the M3 stock cooler is the best option provided you find someone competent to fabricate the lines.

[Fastguy]

I was thinking this exact same thing yesterday-combine both cores. My most pressing issue at the moment is to find the size of the oil core ports. My best guess is 22mm 1.5 pitch but this is purely a guess. I need to somehow get sample fittings to test. I was told once again to get it repaired and that a good welder can do the job? Just clean it well?

[Bigglezworth]

I thought of this when I performed my first conversion and decided against it. The diameter of transmission lines are noticeably smaller and I figured that there might be flow issues.

I still think that the aftermarket Setrab or the M3 stock cooler is the best option provided you find someone competent to fabricate the lines.

I do believe the OEM unit is made by Setrab... As for the diameter, we should all remember that the size of the oil lines within the block are a lot smaller than the size of the lines feeding the cooler - meaning it will increase the pressure at the cooler. Not being a physics major, I do believe that means the oil won't pass 'through' the cooler as quick which would mean slightly poorer cooling. How much - debatable I guess.

[s8prtotype]

Here is some more info...

http://forum.rs246.com/viewtopic.php?f=2&t=113332

[lswing]

Here is some more info...

http://forum.rs246.com/viewtopic.php?f=2&t=113332

Nice, I just read that also and was thinking of sharing it over here. He's been doing some good writeups...