Has anyone had any major problems with the 05 intercoolers when putting on a larger turbo? I don't feel like getting the solid aluminum intercooler , but I need a bigger turbo. If I put on a bigger turbo and keep my boost levels the same, but add more volume I would think it should hold up? Just thinking out loud!

 

Just curious here, if you go to bigger turbo but you keep the same intercooler and stick to the same boost level, ie. pressure, what have you gained?

Here's my logic, the same pressure coming out of the turbo and going into the intercooler would seem to indicate that you are not flowing any more air through that intercooler than before. Therefore, you won't see any performance gains.

Maybe I'm wrong here. Somebody school me on this turbo stuff.

 

A larger charger can flow more air at the same pressure as a smaller one.

THink of it like this -

A one gallon air compressor can compress 120psi of air but you have very little air.

A 30 gallon air compressor can compress the same amount, 120psi, but look at the volume of air that you have now.

Same pressure but more air.

Wes

 

I don't think your analogy works for a engine.

If I try to put all the air from from that 30 gallon tank into the 1 gallon tank isn't the pressure going to go up? Sure it is. It has to go up.

 

It's much more complicated than just getting a "bigger turbo." But under the right circumstances changing only the turbo will increase horsepower. I run a Garrett TO4E turbo on my sandrail with a .57 trim compressor wheel, stage 3 exhaust in a .63 a/r turbine housing. Previously I had a .48 a/r turbine housing which spooled the wheel up quicker, but the .63 has a lot more top end power because of the increase in volume it provided. I haven't put it on the dyno yet, but the difference is the car now hangs the front wheels through 3rd gear going up Oldsmobile hill in Glamis, and it wouldn't come close to doing that before. A lot more top end. Nothing else changed, including boost pressure, 14 lbs for both.

 

Thanks for the additional info/data points. I do have another question.

What exactly is the 14 psi boost you mention? Is that the max pressure setting on the waste gate? Or, is that an average steady state psi.

 

14 psi is the pressure at which the waste gate opens so the desired pressure will not be exceeded.