Fly In My Soup Posted December 12, 2016 Share Posted December 12, 2016 Anyone got a guide, or the knowledge, to convert bore to cc. Stripped head down today to refit gaskets, bore measured as 37.5mm Any help appreciated Quote Link to comment Share on other sites More sharing options...
Baja_Crazy Posted December 12, 2016 Share Posted December 12, 2016 37.5mm? the closest to that is 38mm 38mm bore with 28 mm crank equals to 31,8cc 38mm bore with 30mm crank equals to 34,2cc Quote Link to comment Share on other sites More sharing options...
.AJ. Posted December 12, 2016 Share Posted December 12, 2016 Piston size and engine displacement with different stroke options.32mm S = 22.5cc +1 = 23.3cc +2 = 24.1cc34mm S = 25.4cc +1 = 26.3cc +2 = 27.2cc35mm S = 27cc +1 = 27.9cc +2 = 28.9cc36mm S = 28.5cc +1 = 29.5cc +2 = 30.5cc Quote Link to comment Share on other sites More sharing options...
Fly In My Soup Posted December 12, 2016 Author Share Posted December 12, 2016 I've re measured piston (37mm) and chamber 37.5-38mm, crap eyesight doesn't help Quote Link to comment Share on other sites More sharing options...
Fly In My Soup Posted December 12, 2016 Author Share Posted December 12, 2016 2 hours ago, .AJ. said: Piston size and engine displacement with different stroke options.32mm S = 22.5cc +1 = 23.3cc +2 = 24.1cc34mm S = 25.4cc +1 = 26.3cc +2 = 27.2cc35mm S = 27cc +1 = 27.9cc +2 = 28.9cc36mm S = 28.5cc +1 = 29.5cc +2 = 30.5cc Explain it to me like I'm dumb, which err.... I am Quote Link to comment Share on other sites More sharing options...
Fly In My Soup Posted December 12, 2016 Author Share Posted December 12, 2016 Got my matte to measure it with some digi gauges, good job as my eyesight ain't great up close. Its - 36mm bore - 30mm stroke = 30.5cc Thanks for your help dudes 1 Quote Link to comment Share on other sites More sharing options...
t2boats Posted December 13, 2016 Share Posted December 13, 2016 That info is handy to know! I lost my data sheet a while back. Is that a sticky somewhere? 1 Quote Link to comment Share on other sites More sharing options...
.AJ. Posted December 13, 2016 Share Posted December 13, 2016 I'll make this a sticky 1 Quote Link to comment Share on other sites More sharing options...
Fly In My Soup Posted December 13, 2016 Author Share Posted December 13, 2016 Seeing as this is stickied now, thought I might as well provide a link to the best automatic converter online, I tried a dozen before I saw this site http://www.revetec.com/Calculators/Engine_Displacement_Calculator-2.htm Its easy to use!! 1 Quote Link to comment Share on other sites More sharing options...
.AJ. Posted December 13, 2016 Share Posted December 13, 2016 Nice find Quote Link to comment Share on other sites More sharing options...
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