Help me calculating my CR plzzzz
10-03-2010, 05:11 PM
#1
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Help me calculating my CR plzzzz I tried to use this site
http://www.diamondracing.net/cocalc.htm
but I'm missing 2 important numbers
my engine specification is :
4.03 bore
4 stroke
0.04" head gasket
6.125 rod length
deck height is 9.24
i need to know Top Ring Down
and Piston to Deck
this is a link for my pistons if that help
http://www.speedinc.com/cont.cfm?cid=C0000759
any help will be appreciated
http://www.diamondracing.net/cocalc.htm
but I'm missing 2 important numbers
my engine specification is :
4.03 bore
4 stroke
0.04" head gasket
6.125 rod length
deck height is 9.24
i need to know Top Ring Down
and Piston to Deck
this is a link for my pistons if that help
http://www.speedinc.com/cont.cfm?cid=C0000759
any help will be appreciated
10-03-2010, 06:15 PM
#2
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Well using these figures I get 11.17:1
4.03 bore
4.00 stroke
4.04 head gasket bore
-10cc pistons
0.00 piston deck clearance
64cc compustion chambers
0.053 compressed thickness gas
Do you know the cc of the heads and which gasket you will be running? Also the link shows -7 and -10cc pistons, which one are you getting?
EDIT: With the thinner gasket and -7cc pistons I'm getting about 11.52:1
4.03 bore
4.00 stroke
4.04 head gasket bore
-10cc pistons
0.00 piston deck clearance
64cc compustion chambers
0.053 compressed thickness gas
Do you know the cc of the heads and which gasket you will be running? Also the link shows -7 and -10cc pistons, which one are you getting?
EDIT: With the thinner gasket and -7cc pistons I'm getting about 11.52:1
Last edited by camz28arro; 10-04-2010 at 05:42 AM.
