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> Valve Timming quick reference
-JR-
post Feb 28 2005, 07:49 PM
Post #1


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I'm troubleshooting some blow back I'm getting on a new, never run, engine.

At Top Dead Center (ATDC)
Cylinder---Intake-----------------Exhaust
1-----------CLOSED----------------CLOSED
2
3
4

Options – OPEN / CLOSED / OPENING / CLOSING

Can anyone complete this chart for me? But I’m mostly interested in 3 and 4.

If someone knows it, can they tell me if the 1and 3 valve positions are the same as 2 and 4 when the crank is 180deg out from TDC?

Thanks!

-JR-
Soon to be driving his 914
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