Agreed with the above, kind of!
It takes at least a 4 CC change to do anything positive in terms of power improvements.
A 2 CC change is is just polishing your shillelagh!
For your motor to end up with a compression of 10.5 to 1 you need a total CC volume above the piston at TDC of 99.15 CCs.
I can't see why you need a 22 CC dish.
This is what I come up with for total CC numbers which assumes zero deck clearance.
Chamber volume 72.CCs
Head gasket volume 9.4 CCs
Zero deck. 000
Valve notch volume/ flat top with 2 valve notches. 4 CCs
Ring land volume 1.5 CCs.
Total 86.9 CCs
So you only need a dish of 12.25 CCs to end up with a 10.5 to 1 ratio
If you wanted a ratio of just 10.1 your total volume needed would be 104.66 CCs, and still that's a total dish volume of only 17.76 CCs.
__________________
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; 04-04-2025 at 05:11 AM.
|