Piston out of the hole .022

Posted By: Von

Piston out of the hole .022 - 04/05/10 03:33 AM

Wondering what your thoughts are on the following scenario.

Piston .022 out of the hole, with .290 from the crown of the piston to the top ring.

Ive already got some .062 Cometics so that should work out nicely.

Just wondering if that is too far out of the hole?

KB says it will be fine, but....

Posted By: Irun5snd8th

Re: Piston out of the hole .022 - 04/05/10 03:41 AM

Run my small block with .020 out of the hole and .060 cometics. Not issues at 12.8:1

Posted By: Cab_Burge

Re: Piston out of the hole .022 - 04/05/10 03:41 AM

which head and chamber design? Sounds like that motor is going to have some compression

Posted By: Von

Re: Piston out of the hole .022 - 04/05/10 03:58 AM

Quote:

which head and chamber design? Sounds like that motor is going to have some compression

BS heads, and about 12.7 comp. Using a dish to keep the compression reasonable.

Posted By: Cab_Burge

Re: Piston out of the hole .022 - 04/05/10 04:01 AM

Quote:

Quote:

which head and chamber design? Sounds like that motor is going to have some compression

BS heads, and about 12.7 comp. Using a dish to keep the compression reasonable.

Mock that rascal up with some clay around the valve reliefs, set the heads on with bolts and head gasksets, set the valve lash and check it out, your probally golden but it doesn't hurt to check

Posted By: rebel

Re: Piston out of the hole .022 - 04/05/10 04:42 AM

i'm out of the hole .040 Von, cometic gaskets work a treat for me in this situation.