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cstreit cstreit is offline
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Join Date: Feb 2000
Location: Naperville, IL USA
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John,

Doesn't the lash reduce when the engine heats up and the valves get minutely longer?

Sherman,

That's the essence of the design. The spring still has about about 1mm clearance past max lift of the cam. The piston to valve clearance is 1.4mm. Were the valve to try and float, the valve slams to a stop and breaks the cast rocker arms rather than punching into the piston.
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Chris
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2001 GT3 Cup - "Pepin"
1996 993 RS Replica
2008 Yamaha R6
1971 Norton 750 Commando
Old 06-13-2005, 08:56 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #13 (permalink)