Why does 6.0 IC drop pre turbo EGT's? - Ford Powerstroke Diesel Forum
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Old 12-09-2008, 07:05 PM
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Why does 6.0 IC drop pre turbo EGT's?

I've read some posts on here refering to the 6.0 intercooler upgrade lowering EGT's? anyone shed some light on this?

Does this mean that colder air going into the motor outputs colder exhaust?

How does this play a role in the power? colder more dense air going into a NA motor makes more power...but cooler EGT?
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Old 12-09-2008, 07:20 PM
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Quote:
Originally Posted by Phiber Optik View Post
I've read some posts on here refering to the 6.0 intercooler upgrade lowering EGT's? anyone shed some light on this?
It works.

Quote:
Does this mean that colder air going into the motor outputs colder exhaust?
Yes

Quote:
How does this play a role in the power? colder more dense air going into a NA motor makes more power...but cooler EGT?
Yep, can make more power because the air is denser, therefore more can be stuffed into the cylinder. And yes on cooler egts. It makes sense, cooler air into the engine, cooler air out.
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Old 12-09-2008, 07:21 PM
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Well the colder/denser air has more oxygen in it which allows for a better more efficient burning of the fuel in the motor resulting in more power and cooler EGT's.
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Old 12-09-2008, 07:33 PM
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Makes sense.

When i've done dyno tuning on carbed NA SBF's usually the colder it is, the more power the motor makes, but the motor coolant seems to get hotter as well. in a SBF coolant heat is primarily from ignition temps and secondly from oil temps. but I guess a lot changes when you go to a FI motor.
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Old 12-09-2008, 10:06 PM
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IIRC a gas motor runs hotter when leaned out. In a diesel its the opposite.
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Old 12-09-2008, 11:00 PM
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Ok thanks that clears it all up then
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Old 12-10-2008, 07:10 AM
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It is simply larger, just as a larger radiator would cool better so does the larger IC, but to be perfectly honest with you unless you are getting one for FREE or close to it, this isn't worth the money to do it. If your EGT's are getting that high look for other cures first. EGT's are controlled by good airflow and better tuning, you must have both of them!! If you really want a bigger IC look at Spearco's cooler. The 6.0 cooler will drop your EGT's about 50 degrees and cost $500+, look at a water meth injection, this is the best way to control EGT's if they are still high after intake/exhaust mods and proper tuning.

NCH
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Old 12-10-2008, 07:19 AM
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On a stock injectored truck, there should be no egt problem with the factory intercooler. Don't worry about intercoolers unless you run bigger injectors.
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Old 12-10-2008, 08:45 AM
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Agreed, aftermarket will provide a much bigger drop vs. the 6.0 unit.
Way cooler egt's on my truck with TW chip over stock. Also straightened my A/C fins with a fin cob, I'm sure that doesn't hurt either!
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Old 12-10-2008, 10:28 AM
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Quote:
Originally Posted by NCHornet View Post
If you really want a bigger IC look at Spearco's cooler. The 6.0 cooler will drop your EGT's about 50 degrees and cost $500+
Stock 6.0 coolers go for about $150 most the time on Ebay. Im trying to get rid of mine and thats all im asking. $500 or even $400 is high.
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