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> TDC actual vs. mark on fan
jmargush
post Mar 16 2025, 06:20 AM
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Has anyone experienced the mark on the fan being off from where actual TDC is ?

Last time I had the engine out I put a dowel in cylinder #1 and found TDC and the factory mark was approx. 3/8" tot he left of where I feel TDC on #1 was.


I am going to recheck it and see if I made an error the last time I did it.
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technicalninja
post Mar 16 2025, 12:11 PM
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Depending on year/application the fans are marked differently...

My 75 1.8L is ONLY marked at 7-9? (red). (IMG:style_emoticons/default/headbang.gif) (IMG:style_emoticons/default/headbang.gif)

The 73 2.0L fan I replaced it with was marked at both TDC (white) and total timing (27-30? red).

I made a second TDC mark 180 degrees from the original (black) to allow LD testing on the opposing cylinders.
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