229 head question

[Ol,fart]

Originally Posted by Megadan

My bike is sitting at about 10.3:1 total static compression. I have a TT250 head gasket, 1mm shaved off my head (but I did also do some chamber work and added a few CC's back in the process) with a 4 degree key and an adjustable "performance" CDI. I run around on 91 octane all day long and have yet to even think I felt or heard any knock. Even if you figure my dynamic compression is lower due to the increased overlap from the cam I am using, my compression is still likely in the mid 9's. It's high enough that I am nervous about breaking my kick start gear inside the engine, and my electric start struggles lol.
You will be ok. These CDI boxes have super conservative timing.

mind if I ask which box your using? And are you happy with it?