To those w/ compression ratio calc abilities

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11-03-2003, 10:29 PM

Jammer

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To those w/ compression ratio calc abilities

Trying to end up about 8.5-8.6, heres the set up..was I on or off...
6.0 block, bored 30 over (late edit john, sorry)
6.125 rods
-18 cc dish pistons
70cc chamber
.057 gasket
stock crank

Last edited by JamMasterJ; 11-04-2003 at 12:48 AM.

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11-04-2003, 12:16 AM

John B

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8.43 assuming 4" bore, 4.1" head gasket bore, 0.057" head gasket thickness.

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11-04-2003, 11:36 AM

Old SStroker

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Quote:

Originally Posted by JamMasterJ

Trying to end up about 8.5-8.6, heres the set up..was I on or off...
6.0 block, bored 30 over (late edit john, sorry)
6.125 rods
-18 cc dish pistons
70cc chamber
.057 gasket
stock crank

I get 8.71 with the piston .010 out of the hole,

8.55 at zero deck and

8.40 with piston .010 down in the hole, which might be too much quench height.

Sounds like you are right where you want to be.