Alienshm

Oh ok, no I did not. I also didn’t fill it to the top just went to the first thread of the hole. Thank you for that information. I will redo everything before I put motor in frame. Last question if you have a second. Again bear with me as it has been many many years since I have done anything with a motor. I’m going to run 110 to start with so as far as timing goes is 6-7 ok to start with or would I be better to back it down, when I do switch it methanol should I bump the compression ratio up? Current squish is .48 I have a set of 18cc that i originally spoke about but squish was like .31 to .33. And I feel that is so small. Am I incorrect or would a guy be ok

Sorry, just got the notice for this. So I got my new domes and did the same calculations as before. This time I came up with 11.5:1 and 150 psi. The math I did was as folloWs 68mm bore 34x34x3.14x58 / 1000+20cc / 20 20cc is the amount that I injected into bore with piston at TDC set with dial indicator ,not sure if that’s correct but that’s the way I have been reading it.

Hi all, new to the forum. Doing a lot of searching on compression ratios and still uncertain. Just finished a 68mm bore cheetah PV. The Power valves are blocked off. Anyways, so did a corrected compression ratio and showing 185-190 per side. Doing the UCC i came up with 12.57 I currently have 18cc domes with .045 of squish. I have new domes coming from NOSS that are 20cc which will change a few things. I do plan on running methanol at some point but would like to stick with race gas for the moment. I set the timing at +6 currently but wondering if 190 is too high for 110. Thanks all