Working out required gasket thickness ?. UPDATED.

Does anyone know how i work out what cylinder head gasket i will need on my new build ?. I have a rough idea but any pointers would be appreciated.
Ta
Mark.

measure cc in heads as they vary from different models, also measure pistons and deck height, then you can work out what compression ratio you wish to run, alot of people have different opinions on compression ratios, theres good gains to be had from the correct ratio,i use a perpet and a thin liquid like thinners and a perspex plate etc to measure the displacement

Cheers Andy thats the bit i had a rough idea about bud, it was the actual equasion to take all the measured results & give me a result of 1.1mm for example. Or am i missing somthing obvious lol.

a calculator here, not sure if it helps determine head gasket thickness though

http://www.csgnetwork.com/compcalc.html

Cheers bud, all sorted, shame the heads are goosed. Just my luck. lol

maxboost wrote:

Cheers bud, all sorted, shame the heads are goosed. Just my luck. lol

bluddy hell, if a had as much bad luck as you, ad be strapping me nuts up with gaffa tape

Right i'm all sorted, cc'd the heads & got all the other dimentions required.
Whats the ideal comp ratio.
CP site says the pistions are 8:5:1, is this what i should be aiming for ?.

i got told it was 8:4 std
so not sure if there would be much gains by upping it

Right done some research, & 8:5:1 is good for what i'm after, thing is i've used several comp ratio calculators & all seem to give me different results, Has anyone go a tried & tested one.
These are the measurment i have, & i get a 8:8:1 with a 1.6mm gasket
cyl bore 92mm
stroke 75mm
deck height 0.32mm
piston cc 8.2mm
head cc 46.8mm


Any thoughts as i'm loosing my enthusiasum for this rebuild lark.

Mark think how i feel your much more clued up kindon will be doin most of mine i suspect as this has lost me like lmao loving my learning curve but fukin hell im in deep maybe a few more chats pms are in order lol . Let me know when your working on it maube worth a pop round if you dont mind for some more learning lmao

All sorted. sometimes ya can't see the wood fo the trees.