11-12-2010, 11:56 AM
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CC Member
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Join Date: Sep 2009
Location: Hideaway, Texas,
TX
Cobra Make, Engine: Backdraft #318, 418 CI, 532 RWHP, Mass Flow Injected, TKO600-Road Race, BMW M3 Suspension, Race Springs (Wouldn't do it again, rough on the street).
Posts: 240
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Not Ranked
Hydraulic lifter, roller cam valve clearance/preload
My 418 small block with Comp Cam roller hydraulic lifter motor has the rocker/valve lash set at zero. No preload. The rocker will "slide" easily across the valve tip with the valve closed, but no clearance and no preload.
I suppose this is avoid the lifter from pumping up since it's already maxed out in height.
This is a 550+ hp flywheel motor at 6,250.
Any comments on this being a good, bad or medium set up for a street only motor? Other suggestions?
Thanks,
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Wayne Rogers in Hideaway, Texas
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