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Old 11-05-2010 | 07:33 PM
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Scota4570
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From: Salinas, CA
Default RE: General port timing guidelines?
Doooooh!
Sorry I was using a drafting protractor that has two scales, one is 90* that repeats four times

Intake
Open 64*BTDC (296*ATDC)
Close 61*ATDC

Exhaust
Open 102* ATDC (78*BBDC)
Close 254* ATDC (106* BTDC) (74* ABDC)

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