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      04-26-2022, 03:48 PM   #3261
SYT_Shadow
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Drives: E90M/E92M/M4GTS/M4GT4/M6/X5M
Join Date: Sep 2010
Location: Greenwich, CT

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Quote:
Originally Posted by b4hand View Post
Lower IAT's wouldn't lower cylinder temps or does the computer just throw more at the engine since it's below thresholds
lower IAT would mean lower cylinder temps, which would allow the engine to make more power -or the same power as lap 1 in later laps- but the oil would overheat anyway

I don't think intake air temp has anything to do with oil temp, or at least they're not clearly correlated. We used to track a F80CS and now use F82 GTSs with water injection. The water injection lowers IAT substantially, but oil temps are pretty much the same between both cars.

Maybe to think about it another way: an engine is say 25% efficient at converting fuel into power. Dogbone's car has 200hp over a stock engine, meaning if a stock engine produces 420/0.25=1680hp in heat, his car produces 625/0.25=2500hp in heat.
1680 vs 2500hp, a delta of ~800hp in heat.
Those extra 800hp are being dissipated into a system not designed for that.
All the heat goes into the oil and water, and then you wind up with high temps.

You need more frontal surface area for more radiators, or put radiators somewhere else in the car to cope with the extra heat. Or just run fewer hot laps which the tires favor anyway
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