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Author Topic:   Help finding TDC on fully assembled engine.
4d_POWER
Member
posted May 07, 2004 08:06 PM
Put new balancer on engine during build,
forgot to mark TDC. Engine has been installed in car and everything is on it.
Went down checklist today and got to
"Set timing" and I noticed that TDC wasn't marked.
Is there a way to find it? Maybe pull #1 plug and insert some type of feeler guage until piston reaches the top?
Car runs fine, sounds fine, but I'd like to see where it's at exactly.

351W

Any ideas?


DirtFreak08
Member
posted May 07, 2004 08:15 PM
they make a tdc stop that you put in a plug hole


awkwardjeff
Member
posted May 07, 2004 08:36 PM
A few words of caution if you use the stop in the spark plug hole, which is the way I would find TDC at this point.

DON'T, DON'T AND DID I SAY DON'T use the starter to turn the motor over with the stop inside the plug hole. YOU WILL DAMAGE THE PISTON....

take all plugs out and back off valve springs, it will make truning the motor MUCH easier and you will have a better feel when the piston hits the stop. turn the motor over in one direction and mark the damper, then turn the motor over the other direction and mark the damper again....... NOW THE EXACT CENTER OF THESE TWO MARKS WILL BE YOUR TDC.........

YOU CAN ALSO BREAK OFF THE TIP OF THE STOP INSIDE THE MOTOR IF YOU TURN IT OVER WITH THE STARTER......

YOU CAN ALSO MAKE YOUR OWN STOP, TAKE A OLD PLUG AND KNOCK EVERYTHING OUT AND SAVE THE THRAEDED BODY, WELD OR BRAZE A NUT TO THE OUTSIDE.......NOW YOU CAN THREAD IN A BOLT. USE A NUT ON THE BOLT TO LOCK IT TO THE PLUG SO IT CAN'T TURN....... SHOULD TAKE A PERSON A FEW MINUTES AND COST NOTHING.

quote:
Originally posted by racer17j:
they make a tdc stop that you put in a plug hole



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