Thread: Not another turbo vs supercharger question

But it would make mega power with only like 2 psi with such crazy compression right?

Or it will make a neat bang.....guess we will find out huh

Corey self proclaimed Expert at being gay..... Enuff said /THREAD.

Ohh and E85>ALL

Well hopefully the e85 will help it live longer and a tune of course

Originally Posted by GTPpower

I would like to disagree with this, but every time you fill up with e85, it puts money in my pocket...so I think I'll just let it be.

I was kidding just because it riles people up. But yeah I like E85 to each their own opinions.........

NebTurboSt5 silly me I forgot my sarcasm font. Yes I totally agree, 10 to 1 would be retarded.

So in summary... The boost levels typically seen from a supercharger are fine with slightly elevated compression. GM lowered the compression on supercharged motors as a way to reduce warranty costs- so many "average" people don't understand why you need the increased detonation resistance of higher octane fuel in their supercharged motors, etc.

But once you really start to push boost (i.e. with a turbo) you really do need to back off the compression. You can moderate that effect by doing some things (like intercooling, using E85 or race fuel or xylene, water injection, etc.) but as the boost levels get up there you really do need to back off the compression to prevent motor damage. And don't worry about sounding like a wimp with lower compression- with all that boost, you are really cramming the cylinder full and achieving very high cylinder pressures anyhow.

Originally Posted by NebTurboST5

no reason for anyone ever to build a 10 to 1 3800...ever...

Agreed lol

speaking of compression, the 4 cylinder mazda 3 engine runs at like 13:1, but I think its direct inject, so not really the same principle.