03-14-2009, 03:04 AM
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CC Member
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Join Date: Feb 2006
Location: Gore. New Zealand.,
SI
Cobra Make, Engine: DIY Coupe, F/T ,MkIV.
Posts: 808
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Have you allowed for the preload in the lifter and head gasket thickness, plus have you put some engineers dye on the valve tip & cycled the crank/cam/valvetrain thru a couple of revolutions to check for a central wear pattern with this 8.8" pushrod installed[ Yes, a little tricky to do with a new hyd roller lifter-you will need some very light check springs on the valves and have to watch for lifter compression closely to enable this check]
Many hyd roller lifters are taller than the flat tappet version which could explain the pushrod length difference.
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Jac Mac
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