Compression?
TECH Senior Member
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
Originally Posted by jlrz28
Stock 2000 Ls1 motor with 62cc heads and stock gaskets, whats the final compression ratio? 10.5, 10.7?
Thanks
Jason
Thanks
Jason
The LSx stock pistons come OUT of the hole not IN so a negative value has to be logged for piston position.
Originally Posted by PREDATOR-Z
Aproximately 10.9 depending on your out of hole piston position.
The LSx stock pistons come OUT of the hole not IN so a negative value has to be logged for piston position.
The LSx stock pistons come OUT of the hole not IN so a negative value has to be logged for piston position.
So I believe Predator's numbers.
Predator, could we just calculate the volume of the portion of piston out of the hole and add it to the feild for piston dome?
Seems like that would be most accurate...
radius: 4.95, diameter: 9.9cm (3.898")
perimeter 31.102
base: 76.977
altitude: 0.007
lateral area:0.218, surface: 154.171
volume: 0.539
I get; 10.8 with a gasket thickness of .054"
and 10.9 with a gasket thickness of .052"
Anyone want to check my math?
Seems like that would be most accurate...
radius: 4.95, diameter: 9.9cm (3.898")
perimeter 31.102
base: 76.977
altitude: 0.007
lateral area:0.218, surface: 154.171
volume: 0.539
I get; 10.8 with a gasket thickness of .054"
and 10.9 with a gasket thickness of .052"
Anyone want to check my math?
Last edited by ssheets; Apr 6, 2006 at 02:22 PM.
http://www.csgnetwork.com/compcalc.html
it'll let you use "-" for out of the hole piston measurment.
it'll let you use "-" for out of the hole piston measurment.
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Originally Posted by mr2guru
http://www.csgnetwork.com/compcalc.html
it'll let you use "-" for out of the hole piston measurment.
it'll let you use "-" for out of the hole piston measurment.
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