That is exactly what Zeke told me! Thank you! They are 3mm each.pidjones said:Looks like the fins can go thinner, or be tapered to remove a bit more without cutting heat transfer.
You were right...abnormal wear on your skirt...so 8500 is the limit. I think we will shoot for 8000.Sonreir said:If you're still making power and don't mind tearing down the engine on a frequent basis, you can go even higher. Short skirt forged pistons can often get you over the 5000 ft/min mark (especially on a drag motor, which will only be running these speeds for short periods of time).
Abnormal wear on the skirts will be a signal that you're near/past your limit.
Depending on how deep you want to go down this rabbit hole, longer con rods will also help, but will also bring a new set of problems with them.
Texasstar said:We checked the squish after the fact. We had removed the base gasket and we still had .042” squish.
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This is going to sound crazy but we are starting with 1.4 millimeters =Sonreir said:Opinions differ, but .040" is usually the upper limit for what one would consider a squish band. Not uncommon to see clearances as low as even .010".
teazer said:Transfers. There must be matching holes in the piston.