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01-24-2017, 05:05 PM
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Senior Member
Join Date: Nov 2005
Location: Pinckney, Michigan
Posts: 507
Likes: 399
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Re: Valve overlap
I found this on the internet.
Here's an example: Comp Cams XE294H Adv Dur: int 294º, exh 306º 110 LSA, 106 ILC (4º advance) Valve timing @ .006" Int opens @ 41º BTDC Int closes @ 73º ABDC Exh opens @ 87º BBDC Exh closes @ 39º ATDC Adding the int open and exh close times (41+39) the overlap is 80º Using the formula above: 294+306=600 600/4=150 150-110=40 40*2=80 The overlap is 80º
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John Dinkel 3295 STK |
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