Mikey~~~
Do you know the difference between Static Compression and Corrected Compression? No, not exactly, what do I need to know ?
I am not trying to ask you a "trick" question, merely trying to evaluate what you think you will be building with all of your new parts.....
My research shows that I should have something close to 9.5:1 using the SE heads and STOCK pistons. And I might squeeze just a wee bit more by going with the cometic .030 head gasket ....... a mild build
Regards,
Tim
Tim,
I am not sure what you're asking me .................. let me give it a shot, and you and the others can help me get it worked out correctly
static compression is a measurement of the combustion chamber. Take the volume of the combustion chamber when the piston is BDC and divide it by the volume of the combustion chamber when the piston is TDC ...........
I lifted this from another site:In simple terms: for static CR, the first number is the chamber volume at BDC, second number is chamber volume at TDC...the higher the first number is, the more squeeze you have. More squeeze improves burn up to a certain point. This point varies for each engine design.
for my build:the SE heads have larger than stock 1.898" intake valves and 1.623" exhaust valves and are equipped with Valve Spring Kit P/N 18223-98 (not that the valves or springs have anything to do with compression, they do not, I just listed that cause I have the info).
At 72cc, this equates to a 9.5:1 compression ratio with stock pistons.
I'm going to install a cometic .030 head gasket, so this will increase the compression ratio just a bit more than what is stated above.
Given the chamber volume of 72cc, and stock pistons, and cometic .030 head gaskets I should have a CCP (cold cranking pressure) of 179.5 lbs @sea level, and a static compression of 9.53:1 and a corrected compression of 8.78:1 using the Wood W6 cam
Is this right ?
Thanks,
Mikey
and you know what, I don't really know what all this means

I mean, I get the terms, and can run the calculators, and I have the picture in my brain of how the internals work, but I'm not a race engine builder,,,,,,,,, heck, I've never had ANY engine open before ... I get the basis of it all (I think) .... you know, if the CR is too high, it creates to much pressure, and heat, which could cause detonation, and robs power .....
However, I'm sure that this build doesn't even come close to creating those types of problems.

now, as far as 'corrected compression' is concerned, what is it that you would like to teach me

I'm WIDE OPEN for EDUCATION !!!!

especially now, before I start into this thing .... I hope within the next couple of weeks !!!