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Old 06-18-2021, 06:48 PM
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pastry_chef pastry_chef is offline
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Join Date: May 2003
Location: Ottawa
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On paper .085 intake tappet lift is 106 intake centerline, so what you are seeing sounds correct.

Honestly I'd be happy with your 105 centerline.
104 centerline would push it further into Harold's ideal range.

Quote:
The intake lifter should be about .030" higher than the exhaust, with an OK range being .025" to .040". If the intake is anywhere in this range, your engine will run good. If the exhaust valve is the same height or higher than the intake, the cam needs to be advanced, either by a bushing, or even by advancing a whole tooth. It just depends how far off it is. And this does not mean the cam was ground wrong, but that all the clearances involved have stacked up the wrong way. As long as you get the intake lobe in the 'sweet zone', the engine will work as promised..

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