i might be able to get a high compression e31 head. would it fit on my 83 turbo zx???

It will fit, how long the engine last with 10+ compression ratio is the question!

does anyone have a idea, how long it would last?

If you have a turbo engine, you won't have to worry about the compression. The turbo engines have dished pistons and the compression will probably be more in the neighborhood of 9:1 with an E-31. No problems.

According to the engine calculator, your compression should come in somewhere between 8-8.75:1 depending on which head gasket you use.

I'm not much of a turbo guy, but they but everything I've read says that they tend to run very low compression compaired to NA cars. I would think that once the boost comes on you wouldn't get around the block...

where would a head like this come from?

what do you mean get around the block?

Before you get too excited, which head is on the Turbo? The P90?

The P-90 is already one of the best flowing heads due to it's being used with the Turbo, so if you are keeping th FI and Turbo, the E-31 won't help you much, if at all.

Plus, with the Turbo, you're gonna run into trouble with detonation at 9:1 more than likely. 9:1 is right on the borderline with a Turbo. Which means even more work and money.

You might be better off to spend your money on an intercooler.

The E-31 is an early 240Z head, NA and will produce probably the highest compression ratios available using a stock head.

Around the block,

Hmmmmm, pull it out of the driveway, kick it in the A$$ and call a tow truck to get home....

ok thats good to know. i think that it has the original head on it. and i am keeping the fi and turbo.

i thought you ment the engine block. i was thinking the compression could not get around the block or something... i was trying to figure what the heck you were trying say