Next job to do is replace my 3BN cylinder head with a 3MB version.
3BN
3MB
Needs re painting but not in too bad condition, just a bit of metal debris in the squish, nothing that a rub down wont fix. I was asking about the strange squish area with the 3BN head, Phifi of the French forum Yam2stroke, told me it is to meet noise control standars and to limit detonation? I know...there shouldnt be detonation