Speaking of hot oil...
06-11-2008, 03:26 PM
#1
Le Mans Master
Thread Starter
Speaking of hot oil...
The other thread seems to have fizzled out so I thought I should ask my question here. I saw 293* oil temps this weekend at Barber. I'm going to add an oil cooler, but my car is street driven mostly. I have heard that the radiator with itegrated oil cooler is more street friendly. I'm looking at the DeWitts unit and was wondering if any of you have any direct experience with it and how much does it actually help on the track.
BTW - C5ZO6
Thanks.
SP
http://www.dewitts.com/pages/product...asp?ProdID=358
BTW - C5ZO6
Thanks.
SP
http://www.dewitts.com/pages/product...asp?ProdID=358
Originally Posted by DeWitts
This Direct Fit radiator features two rows of 1" tubes, which doubles the cooling capacity of a factory single row. Our exclusive "press formed" end tanks are hand tig welded by expert craftsman, eliminating the factory plastic tanks. This unit fits into the original mounting and has all the factory connections. The A01AE model features a 7-plate aluminum Engine Oil Cooler and transmission cooler. #10AN oil fittings are included.
Last edited by sperkins; 06-11-2008 at 03:32 PM.
06-11-2008, 05:59 PM
#4
Le Mans Master
Thread Starter
06-11-2008, 06:54 PM
#5
Former Vendor
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St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13
Try one of our LG Super Cool Radiators, these have been tested and track proven for years.
These are the exact same units that you will find in all of our high HP street cars all the way up to World Challenge Powered Corvette's. Leighton Reese even had them in his car as well.
Typicaly we will see 20 degree drop in oil temp, and 30 degree in coolant.
I have these in stock, give us a call or shoot me a PM if you have any questions.
These are the exact same units that you will find in all of our high HP street cars all the way up to World Challenge Powered Corvette's. Leighton Reese even had them in his car as well.
Typicaly we will see 20 degree drop in oil temp, and 30 degree in coolant.
I have these in stock, give us a call or shoot me a PM if you have any questions.
06-11-2008, 06:58 PM
#6
8th Gear
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Hot Oil
I have a C6 Z51 with a Dewitts Radiator with integrated engine oil and trans cooler. Before 295 F, after 235 F max oil track temps. 200 F max oil street temp. Before 245 F max water temp, after 210 F max track temp with a 160 F thermostat. Dewitts is a better street /track combo. Ron Davis's is a better track radiator. (better with higher air flow). I'm very happy with the Dewitts radiator.
06-11-2008, 07:34 PM
#7
Le Mans Master
06-11-2008, 10:44 PM
#9
Le Mans Master
- he put a thump on me last weekend.
06-12-2008, 12:28 AM
#11
Burning Brakes
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St. Jude Donor '07
In the summer time up at Willow Springs or Buttonwillow it could be 110F outside. Felt even hotter on the pavement!
A few hard laps would put both the C4 & the C5 oil temp range in the 290-300F range very quickly. I would have to back off and let things stay cool. I never had a problem with cooling temps.
After install of an intergrated EOC the coolant temp was slightly lower and the oil temp would rarely exceed 260F range. I never got around to changing out to a lower thermostat and reprogramming the fans as I wanted to do with the setup. It did however allow me to run hard all day long! When its cooler out even better!
A few hard laps would put both the C4 & the C5 oil temp range in the 290-300F range very quickly. I would have to back off and let things stay cool. I never had a problem with cooling temps.
After install of an intergrated EOC the coolant temp was slightly lower and the oil temp would rarely exceed 260F range. I never got around to changing out to a lower thermostat and reprogramming the fans as I wanted to do with the setup. It did however allow me to run hard all day long! When its cooler out even better!
06-12-2008, 12:49 AM
#12
Safety Car
I saw about 25deg drops in oil after my Dewitts cooler. IMO cleaning the radiator well and directing the air through it well does as much as anything for the coolant.
06-12-2008, 01:25 PM
#13
Burning Brakes
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St. Jude Donor '10-'11
Ron Davis with rt side integrated EOC here and DRM line kit.
Street ~ 20 degrees less on oil temp
Track ~ 40 degrees less (Equal ambient temp ... saw close to 290 before; after ... not over 250.
Street ~ 20 degrees less on oil temp
Track ~ 40 degrees less (Equal ambient temp ... saw close to 290 before; after ... not over 250.
06-12-2008, 10:35 PM
#14
Le Mans Master
Thread Starter
Thanks guys. It looks like the Dewitts is a good choice for me.
Now I just have to dig around through the shop and find a few things I can sell to support my track habit.
Anybody need a '68 convertible?
Now I just have to dig around through the shop and find a few things I can sell to support my track habit.
Anybody need a '68 convertible?
06-13-2008, 04:12 PM
#16
Instructor
Good thread. Can anyone explain why an integrated oil cooler attached to the radiator is more streat/track friendly rather than the stand alone external oil cooler? 
New to the track game and trying to do things right the 1st time... Thanks
Scott
New to the track game and trying to do things right the 1st time... ThanksScott
06-13-2008, 04:58 PM
#18
Burning Brakes
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St. Jude Donor '10-'11
Integrated is *simpler*, more costly, (you're buying a whole radiator upgrade)
Options on separate EOC:
http://forums.corvetteforum.com/show...d+alone+cooler
Options on integrated EOC's:
http://forums.corvetteforum.com/show...d+alone+cooler
