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Modification of Closing rockers,Darmah

Posted: Tue Apr 11, 2023 9:07 am
by 900tlc
I have an early Darmah,I have recently renewed the valve guides in the head.The guides I have used take the latest green valve stem seals.The original guides had the internal o-ring seals,which I know have been written about alot on this forum,The problem I have ,I need to know the dimensions to machine the clearance on the closing rockers to take the latest green valve stem seals.
Can anyone help me with this? Many thanks in advance. I might add it was not possible to purchase the original valve guides.