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> Front Oil cooler size for bigger six
Justinp71
post Oct 11 2017, 10:00 PM
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So I rebuilt my 3.0 into a much higher hp 3.2, I think its pushing 280hp. Problem now is just spirited street driving it runs at 210f with it be 80f outside; I'm sure on the track it will run 230+. I am running an engine cooler and the factory GT style Setrab oil cooler. If I want to run more track how large of an oil cooler do I need? What have you guys done in the past?

Also I am only running a GT lower valance, not a GT bumper, the hole seems large enough, could the GT bumper make that big a difference?


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stownsen914
post Nov 1 2017, 12:42 PM
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I have some experience and opinions to share on this. My racecar has about 260 hp and uses an older B&B cooler that is about 26" x 6" x 3" and have the cooler on the engine removed and replaced with a filter. I run 190 degrees on track. You'll want something similar sized at your horsepower level if you want to stay in the 200 degree range and plan to track your car. The one in Andy's picture looks like the Fluidyne one, which I've heard good things about and is a good size, and a pretty good value at something like $400.

You'll hear a lot of opinions about how to duct air to/from the cooler. Venting out the hood is a common way and I've heard works well. I saw comments in this thread about the low density air, and that's true. Racecar designers don't like to vent out the top of the car because it puts hot, low density air to the rear wing which isn't good for downforce. We mortals would probably be hard pressed to notice the difference. I vented mine into the front fender wells and have found that works well.

To the point about downforce from directing the air out the hood, it can't hurt but you won't get much that way. Air through radiators, oil coolers, etc. slows massively as it passes through - to like a third of vehicle speed. So if you're doing 100 mph, air is only going like 30 mph through the cooler and the ducting. You won't get a lot of downforce from that, though I guess it can't hurt.

Important points:
1. Make sure you seal the ducting leading to your cooler well. If there are gaps, the air will escape and never hit your cooler. Design the ducting to be close fitting and use foam tape (the stuff you get at Home Depot to seal doors and windows). I was sloppy sealing the edges when I first built my ducting, and later got a 20 degree oil temp drop just from taping and sealing small gaps less than half an inch.
2. Give the air a place to go without restrictions after the cooler. Hood, under the car, wheel wells, etc. Air won't go through your cooler if it can't get out. If you do your ducting well, you shouldn't need fans unless you spend time in stop and go traffic in the summer.

Scott
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Justinp71   Front Oil cooler size for bigger six   Oct 11 2017, 10:00 PM
mepstein   I deleted the stock engine cooler and run a 20 row...   Oct 12 2017, 06:31 AM
Justinp71   I deleted the stock engine cooler and run a 20 ro...   Oct 12 2017, 10:40 PM
mepstein   I deleted the stock engine cooler and run a 20 r...   Oct 13 2017, 05:36 AM
ablesnead   You need more air in , no fans to obstruct flow...   Oct 13 2017, 07:48 PM
Justinp71   You need more air in , no fans to obstruct flo...   Oct 13 2017, 10:12 PM
Krieger   You need more air in , no fans to obstruct flo...   Oct 15 2017, 09:01 AM
ablesnead   I think 190...most like 220 ...some story about bo...   Oct 14 2017, 10:42 AM
SirAndy   I don't remember the exact make and model of t...   Oct 14 2017, 11:01 AM
Randal   I don't remember the exact make and model of ...   Oct 17 2017, 12:43 PM
ablesnead   I'm going to open a can of worms on this respo...   Oct 14 2017, 03:40 PM
SirAndy   I'm going to open a can of worms on this respo...   Oct 14 2017, 07:00 PM
wndsrfr   I moved from the Setrab to a Fluidyne DB30417....g...   Oct 14 2017, 07:24 PM
Justinp71   I moved from the Setrab to a Fluidyne DB30417.......   Oct 14 2017, 11:33 PM
wndsrfr   I moved from the Setrab to a Fluidyne DB30417......   Oct 15 2017, 06:59 PM
ablesnead   Science is never valid for a true believer ....:)   Oct 14 2017, 08:23 PM
SirAndy   Science is never valid for a true believer ....:) ...   Oct 14 2017, 08:57 PM
Justinp71   Sir Andy, thanks for sharing your install detail a...   Oct 14 2017, 11:35 PM
ablesnead   Andy now you are being silly , air flow over and a...   Oct 15 2017, 01:00 PM
SirAndy   thats why it basically doesnt matter with you car ...   Oct 15 2017, 01:28 PM
ablesnead   You are welcome......apparently......touche   Oct 15 2017, 05:45 PM
mepstein   Here’s mine. I will build a shroud for it if it ...   Oct 15 2017, 07:10 PM
Justinp71   Thanks guys. I appreciate the oil cooler info. I h...   Oct 16 2017, 04:15 PM
wndsrfr   I am thinking of heat wrapping my headers and ge...   Oct 16 2017, 06:46 PM
Justinp71   I like that spoiler! My cars so damn low I...   Oct 16 2017, 11:35 PM
stownsen914   I have some experience and opinions to share on th...   Nov 1 2017, 12:42 PM
Justinp71   Thanks Scott, those sound like all great valid poi...   Nov 6 2017, 09:26 PM


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