compression help

flagg · 08-07-2001, 07:29 PM

I was wondering if anyone knew of a site to help calculate compression.
The pistons I am looking at are a forged flattop with 4 valve reliefs.
The summit mag says they are 10.01:1 with a 54.5cc chamber. This is achieved with a .034 deck. The motor it is going in is a zero deck and the heads I have are a 60 cc chamber. any clues how to figure this out or what it might be??? any help would be appreciated.

Rick 91GT · 08-07-2001, 10:05 PM

Well I guess on the other parameters like stroke, bore size, piston wall clearance, piston size and valve reliefs and gasket thickness but if they are all stock then you will have 9.43:1

If you go to www.corral.net, go to tech features, then calculators and you'll see the one for compression.

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Check Out My Site 91GT,Holley SysteMAX II Kit-Heads 2.02" x 1.60" port matched to a 1262,Anderson N-61,24#,76mm C&L,Full MAC exhaust 1-5/8" Long tubes,2-1/2" O.R H-Pipe,2 1/2" cat back, No A/C or PS or emissions, 12" K&N Filter,RNH PERFORMANCE Ram Air,Ron Davis Radiator,Full Suspension,S&W 8pt "X" brace,JAZ seats,3:73's,Welds..etc,4:30's and 31 splines coming very soon! FIRST TIME OUT 12.16@111 WHEELS-UP

08-07-2001, 07:29 PM	#1
flagg Registered Member Join Date: Feb 2000 Location: AZ Posts: 75	compression help I was wondering if anyone knew of a site to help calculate compression. The pistons I am looking at are a forged flattop with 4 valve reliefs. The summit mag says they are 10.01:1 with a 54.5cc chamber. This is achieved with a .034 deck. The motor it is going in is a zero deck and the heads I have are a 60 cc chamber. any clues how to figure this out or what it might be??? any help would be appreciated.

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08-07-2001, 10:05 PM	#2
Rick 91GT Procharged! Join Date: May 1999 Location: Hanover, PA Posts: 1,539	Well I guess on the other parameters like stroke, bore size, piston wall clearance, piston size and valve reliefs and gasket thickness but if they are all stock then you will have 9.43:1 If you go to www.corral.net, go to tech features, then calculators and you'll see the one for compression. ------------------ Check Out My Site 91GT,Holley SysteMAX II Kit-Heads 2.02" x 1.60" port matched to a 1262,Anderson N-61,24#,76mm C&L,Full MAC exhaust 1-5/8" Long tubes,2-1/2" O.R H-Pipe,2 1/2" cat back, No A/C or PS or emissions, 12" K&N Filter,RNH PERFORMANCE Ram Air,Ron Davis Radiator,Full Suspension,S&W 8pt "X" brace,JAZ seats,3:73's,Welds..etc,4:30's and 31 splines coming very soon! FIRST TIME OUT 12.16@111 WHEELS-UP