Quote:
Originally Posted by BruceWilkie
The way I understand it...(please correct me if someone has different info)...
2.2valve = 3.801215 sq inches. 10 pounds square inch boost x 3.801215 sq in = 38.01215 lbs above atmospheric pressure pushing against the valve. Its probably a tid less as I didnt subtract the area the valve stem occupies Probably valve shape and other factors somewhat affect the actual loading. But in this example I'd want to use a spring with 35-40 more pounds open pressure above what would be suggested for an NA motor.
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Here is a link with more info...
http://www.pontiaczone.com/forum/showthread.php?t=23351
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463 SRP .035 Pistons, Eagle rods, N crank, Pump gas, Victor intake, Holley 850BT carb, 6H heads,TH400 w/T-Break, Continental custom 3500 converter, 3.73 gears. TV7101 TURBO!
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