what kind of CR are we lookin to get with that? if thats the case i hope to tear the block apart soon too.

 

enough that it wont be daily driven.





































17.4:1

 

I think I've read the head gasket comes in three pieces and you can remove the middle piece for a lil CR bump.

 

well damn. considering its my girls car, its going to be a daily driven car. so something within reason lol. 17.4:1 is just a bit too high. what can i do to get a decent cr still for a daily car? she wants it to go fast and all(as do i). but i must keep it all street legal and pass emissions for california. (cali sucks!!!)

 

hm...the b7 block with a y8 head and a3 pistons will put you at 12.7:1 i think.a z6 head will lower it to 12.3:1. something like that.

 

Well the highest octance you can get in Cali is 91, correct?

 

93?

and thats pump

you can get higher than that anywhere at race tracks.

 

damn how do you figure all the CR for this kind of stuff? that would be awsome to know.

 

meh...i mostly go off of the big one that i mentioned before (b7 block, y8 head, a3 rods, z1 pistons) and know the difference between some of those and other things. the difference between the Y8 head and the Z6 head is about .4 compression points higher on the Y8. so if something is 12.1:1 on an engine with a Y8 head it will be 11.7:1 with the same engine with a z6 head.

 

He said daily driven. It's not always convenient to stop by the race track on the way to work.

Anyway, whatever CR you go with will be dependent on climate and what gas you have available to you. You can find CR calculators on the web, although from what I've seen some contridict each other as far as what specs are required to calculate it. So I've never been sure which is right, or I'd link ya. GL