[Shotimes] one more question about 0 degrees BTDC

[masho95@attbi.com]

oh great then all would be fine and dandy if the belt 
was still on and all the marks lined up right? but when 
i removed the timing belt the left cam sprocket moved 
on me..  so i think i had moved the cam sprocket back 
to the 12 position after i had the belt on which was at 
the point i realized it had moved.  but i removed the 
belt and placed all the marks in they're correct 
position.  so i think my question is really, If the 
belt is off and the cam sprockets and crankshaft all at 
their correct positions, does it matter if they had 
made any movement?  i think what i need to do is take 
everything apart again.. verify cyl. 1 is at tdc and 
then reset the marks.  does this sound correct?
> > So, when the crank mark is at 5'oclock on the oil pump mark and lined up,
> is
> > that alway 0 degrees BTDC?
> 
> Not always. If you have the top timing cover off and turn the crank you will
> see that on one revolution both the top timing gears will be at 12 o'clock
> when the crank mark is at 5 o'clock or 0 degrees. The next time around they
> will not be at 12 o'clock.
> 
> Paul
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