Here's my numbers.
Piston volume 50.7
Deck clearance volume .5199
Valve notch volume .4088
Head gasket volume .5736
Ring land back volume .09154
Chamber volume ( 72 CCs) 4.939
Adding all this up you get 57.23, then minus out the PV number and you have 6.532
Now divid with that and you have a compression ratio of 8.76 to 1.
If your running a gapless top ring you can half the ring back land volume.
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs!
And he was not talking about 1/8 or 1/4 mile ETs!
1) 1940s 100% silver 4 cup tea server set.
Two dry rotted 14 x 10 Micky Thompson slicks.
1) un-mailed in gift coupon from a 1972 box of corn flakes.
Two pairs of brown leather flip flops, never seen more then 2 mph.
Education is what your left with once you forget things!
Last edited by steve25; 04-03-2019 at 01:21 PM.
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