Quote:
Originally Posted by joshoisasleep
Huh! I was under the impression that with a smaller turbo spinning faster there would be more heat? I mean you said yourself that if it was operating outside its best efficiency it would cause additional heat. Wouldn't a turbo that is too small be operating outside its best efficiency?
I guess my biggest frustration is my inability to find the gauges to properly even monitor what's going on... for all I know my EGT's are totally fine and it's only a coolant temperature issue I'm encountering!! I doubt that though unfortunately. I have a bit of high temp material I can use to insulate the exhaust tube where it goes closest to the intake... I'll see what happens with that at least. As far as an intercooler goes... well if that didn't solve the problem I'd still end up with an intercooler!
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That turbo should be about right for your engine. A bigger turbo would only make less heat because it won't be doing anything for a bigger percentage of the time.
It's possible that the extra boost is fooling your fuel pump into putting out much more fuel and power than you expect.
The cooling load is roughly linear with power. 50% more power and your cooling system has to shed 50% more heat.
Take it easy, get an EGT gauge and see what it reads.