How far does the piston protrude from the bore?
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From: San Antonio, TX
How far does the piston protrude from the bore? This would be in reference to a Lunati 4" crank, 6.125 Pro Billet rod and -8cc dish piston. I am trying to calculate my compression ratio and need this info.
Thanks
Thanks
Re: How far does the piston protrude from the bore? That's the stock spec, don't know about the aftermarket stuff
LAter <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
LAter <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
Re: How far does the piston protrude from the bore? Actually, I think stock is .006". The Lunati kit should stick out .008" using the compression height they supply of 1.123" and a 6.125" rod with a 4" stroke. Deck height is 9.240".
George E.
George E.
Re: How far does the piston protrude from the bore? The CH for a Lunati 3.905 bore, 4" stroke ( ~382 CID) is 1.130. <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" />
Re: How far does the piston protrude from the bore? Not according to the box of pistons that I have sitting in my house. They are the -8cc dished ones and the box says a CH of 1.123". <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
George E.
George E.
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Thread Starter
TECH Apprentice
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From: San Antonio, TX
Re: How far does the piston protrude from the bore? Figuring .008 I come up with about 9.7:1 with a .054 x 3.91 head gasket.
What is the next thicker head gasket?
Thanks,
What is the next thicker head gasket?
Thanks,
