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doggitter · May 8th, 2006, 07:50 PM

Ok, I've got questions too.

gspot, are you talking about combustion chamber volumes? The number you post are head casting numbers, aren't they? Or are the pistons labeled with some of the same casting numbers as heads??

Lazrus, the A15 piston in my catalog lists as 30mm comp. height. They would gain a bit over the Ca's. They are also the same pin dia. but have .5mm offset. No data on dish size though, as where several other's dishes are listed. The E15 rod/A15 piston is where I'm headed so far..

ESerious, do you have a compression ratio figure for that setup or just the cranking pressure??

I did some calculation/figuring with autocad and came up with a 12.1cc dish area in the E16 piston. I can see that figure MAYBE being 2 cc's off do to measuring errors, but no more than that. And I think it's a lots closer than an error of 2cc.

Thinking a bit more on the setup I'm using, we'd get more compression with using the E15 rod length and shaving the top of the piston and milling valve pockets, instead of lowering the piston.

May 8th, 2006, 07:50 PM	#15 (permalink)
doggitter Nissan Enthusiast Join Date: Mar 2006 Posts: 30	Ok, I've got questions too. gspot, are you talking about combustion chamber volumes? The number you post are head casting numbers, aren't they? Or are the pistons labeled with some of the same casting numbers as heads?? Lazrus, the A15 piston in my catalog lists as 30mm comp. height. They would gain a bit over the Ca's. They are also the same pin dia. but have .5mm offset. No data on dish size though, as where several other's dishes are listed. The E15 rod/A15 piston is where I'm headed so far.. ESerious, do you have a compression ratio figure for that setup or just the cranking pressure?? I did some calculation/figuring with autocad and came up with a 12.1cc dish area in the E16 piston. I can see that figure MAYBE being 2 cc's off do to measuring errors, but no more than that. And I think it's a lots closer than an error of 2cc. Thinking a bit more on the setup I'm using, we'd get more compression with using the E15 rod length and shaving the top of the piston and milling valve pockets, instead of lowering the piston. Last edited by doggitter : May 8th, 2006 at 08:01 PM.