Anyone got a YZ125 cylinder (1986 or later) lying about from which they could take some measurements?
I'm looking for the dimensions of the O-ring groove for the combustion chamber (ID, OD, depth).
There are/were different O-rings used for sealing the combustion chamber, depending on the year of manufacture:
93210-65721 - YZ125 1986-1993
93210-63442 - YZ125 1994 onwards
If anyone is in a position to supply measurements, please let me know the year and/or model code of the cylinder you have measured.
Thanks in advance & regards,
James
