Thread: Winfield su1a
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Old 09-26-2020, 05:46 PM   #30
Offy 220
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Join Date: Aug 2011
Location: Long Beach, California
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Default Re: Winfield su1a

Quote:
Originally Posted by Pete View Post
Yes.
Pete's correct! I put together an Offy 220 in the mid 80's with #4 Winfield camshafts. They use radiused cam followers which slide over the valve and spring assembly that ride in keyed bore. The valve lash is adjusted by filing the valve stem with a "Filing block" or if the clearance is too tight the valve seat is ground. All of this takes a considerable amount of time since there are four valves per cylinder. Also, grinding the valve seat requires a "small sized" Kwikway or Sioux grinder since the cylinder head and block are "one casting" [non removable cylinder head] which is done though the bottom side of the block. I still have the Offy filing block.

Last edited by Offy 220; 09-26-2020 at 05:48 PM. Reason: Correct spelling
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