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2005 Cadillac CTS-V
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Extnal oil and trans coolers

I noticed my (accurate) oil temps around 256 (in 90+ heat while running hard for a 2nd day) so I decided to add an external oil cooler. I did the research and decided on the Setrab 6 with 16 rows (https://www.pegasusautoracing.com/productdetails.asp?RecID=8945), -10AN fittings, a low profile adapter from ImprovedRacing.com etc. Sweet.

Then I saw something from another project sitting around - a Derale 15800 16 pass cooler with a fan like this http://www.summitracing.com/parts/DER-15800/. I'm thinking trans cooler?

Also, dumb question: the Setrab is "16 row". The Derale is "16 pass". One is twice the size of the other - what am I missing? row vs. pass?




 

· Registered
2005 Cadillac CTS-V
Joined
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425 Posts
Re: Extnal oil and trans coolers

I read a bit about the clearance issues w/ headers - that research pointed me to the low profile adapter from ImprovedRacing.com, which looks great. It'll be a few weeks before I start this particular project (along with my header install) but I'll update the thread w/ pictures when I install.

I'm not sure putting the Setrab up under the front is the way to go, so it may end up in the rear of a wheel well.

As far as the Derale cooler - I'll keep an eye on my trans temps and, if they ever creep up, maybe I'll plumb the cooler into the spare tire well.
 

· Registered
2005 Cadillac CTS-V
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425 Posts
Re: Extnal oil and trans coolers

good to know, Junior1 - I'll likely run the oil cooler up front, then.

i like that the improved racing adapter has a place for the temp sender and even an extra port for a turbo or accumulator, if you want it. (Anyone run an accumulator?) It ships with the -10 fittings and AN plugs too...
 

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2005 Cadillac CTS-V
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425 Posts
Hey Lou - It was good to see you out at NJMP Lightning a few weekends ago. I'm running a oil cooler in approximately the same place as yours and, that day at the track (approx. 85-90 degrees air temp) I saw my oil temps getting higher than I'd like and higher than I've seen at other track days (~255F) but not getting near 300. My normal running temp, like you, is right around 188-210F. The oil temp gauge fix (another ground wire) might be key.

I'm running a very similar setup to yours with the exception of using a Setrab cooler and Fireflex over my lines http://www.improvedracing.com/heat-shielding/fireflex-78-10an-fire-retardant-hose-sleeving-p-62.html
 

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425 Posts
did you ever find a good place for the accusump?
 
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