Attention: TDR Forum Junkies We do much the same thing with our gasoline turbo dodge's (4-bangers). We have to throw a lot more fuel in the cylinders than is actually needed to keep the pistons cool. Yea, you'll see a little black smoke... . and you'll see EGT's go higher! The extra fuel that was unburned in the compression state is now burning off in the exhaust manifold. It's like this:
Not enough fuel = lean and burned pistons
Enough fuel to *make* the power = normal EGT's and sometimes still burned pistons.
Enough fuel to make the power + extra fuel to cool the pistons = high EGT's, but longer living pistons!!
Last time it was on the dyno it was 355hp/388lbft at the wheels. That's 153 cubic inches/2. 5liter
Not enough fuel = lean and burned pistons
Enough fuel to *make* the power = normal EGT's and sometimes still burned pistons.
Enough fuel to make the power + extra fuel to cool the pistons = high EGT's, but longer living pistons!!
Last time it was on the dyno it was 355hp/388lbft at the wheels. That's 153 cubic inches/2. 5liter
