Z6 vs. Y7 rods! whats the difference
 

NEW QUESTION!!!! Ok should i use my stock rods, that have over 230,000, or buy some with less miles?
ARE z6 rods, the same as Y7?????

Ok, i plan on rebuilding a y7 block that i have. Im using a y8 head on it.
It has 230,000 on it?? approx? and it didnt burn oil.

I have brand new pistons, and today i bought a y8 gasket, and timing belt.
Im still looking for rods, and i need new rings, and bearings.
My question is, will the compression ratio be to high for my future of boost????
I did the compression calculator, but im not quite sure what "piston to deck height" is?

when i choose y7 the c/r is 9.9, then when i choose y8, its 9.3? help???

Re:Building my block (questions!)
 

no the comjp. is fine all you did was build a minime but with good tuning (fuel/spark) it will be find and unlike low comp turbo engines you'll have a little power in the low end

Re:Building my block (questions!)
 

Ok, thats cool, so is piston to deck height, from the top of the piston to the top of the cylinder??

later

Re:Z6 vs. Y7 rods! whats the difference
 

Didnt want to start another thread so the question is at the top!

Thanks

Re:Z6 vs. Y7 rods! whats the difference
 

Im thinking they are the same!??

Re:Z6 vs. Y7 rods! whats the difference
 

piston to deck height is how far away the piston is from the top of the cylinder wall, as you stated.

you don't want a positive number, that means it's out of the hole, and you'll be having fun with smashy smashy piston into head.

Re:Z6 vs. Y7 rods! whats the difference
 

Yea ok, thats what i thought but wasnt sure, so are z6 and y7 rods the same? or can they be used togehter?? let me know! thanks

Re:Z6 vs. Y7 rods! whats the difference
 

I would think that the rods are pretty much the same strength wise. I can't see a difference in 230k mile rods or new ones. IMO they are either broke, or good. ;)

Re:Z6 vs. Y7 rods! whats the difference
 

Steve, its a proven fact that rods do stretch over time, not a whole lot or anything, but the stretching does weaken the rod and ---- up the CR.

Re:Z6 vs. Y7 rods! whats the difference
 

i would think it would get compressed not stretched if anything