Re: compression ratio help
 

yeah, zealworks is the only one that is correct, but it doesnt matter, because the rest you have to figure piston to top of deck clearance manually.

i dont know many specs on the B series to check the calculator for errors, but everything seems right.

how i figured it was took stock c1 specs and adjusted the piston compressed height to that of your aftermarket piston, then adjusted the dome height to get 9.0:1, which made it -4.0 cc dome. then just swapped the block and rods to that of the LS, and came out w/ the calculations.

Re: compression ratio help
 

damn! thats strange, it seems with all the shavings thats been done to the head and the block I would be at 11.5.1 but instead its lower
so now with the new head gasket I should be at 7.0.1 or something in that range, I suck at math so thats hard

Re: compression ratio help
 

got do the cc adjustment before factoring in the compression height.

Re: compression ratio help
 

it will still work out to the same thing. specs on the piston are as i said above, cant be differant, unless CP doesnt know the correct specs. i wish manufacturers would just list the specs instead of claiimed compression ratio.

Re: compression ratio help
 

I came up with 9.0.1 I figured out the dome cc off arias pistons website, with the help of a friend

compression height= 29.9974
dome cc= -12
headgasket thickness = 0.001 thats after subtracting .040 and .010 from .051 for the head milling and decking
b18a rods
b18c pistons

http://www.zealautowerks.com/index.html

Re: compression ratio help
 

on the zealworks calculator w/ the milled block and head and the thicker gasket 9.97:1.

Re: compression ratio help
 

I look at it like this, even if we are off a little, as long as its below 10 compression I feel better.

Re: compression ratio help
 

well, as long as you use that .051 headgasket it should be.