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Old 03-10-2004, 10:24 PM
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How do I tell TDC without...

Hi guys. I was wondering if there it a way to tell TDC without the damper/timing tab marks?

I've seen piston stops, but I'm not sure I would want to use one.



Thanks.
Shane.

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Old 03-10-2004, 10:25 PM
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you can find number one in the cap and spin the motor until the rotor is pointed ar number one.
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Old 03-10-2004, 10:33 PM
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Quote:
Originally posted by badknuckles
you can find number one in the cap and spin the motor until the rotor is pointed ar number one.

Thanks. but wouldn't that be kinda hard to line up?
I want to be dead on, or at least pretty close.

The problem is that my damper has shifted, or somthing is not installed right. but the damper has not shifted since I have owned
it, so I just wanted to paint a new mark on the damper.
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Old 03-10-2004, 10:47 PM
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Clean the area around the number one plug. Make sure you on the compression stroke. Stick a small screwdriver in the number 1 spark plug hole. Feel for the piston. Have a friend slowly turning the flywheel and you'll feel the piston hit the driver. Once the pison hits the driver and stars to go down you know you've just passed TDC. Have the friend rotate the flywheel back until it comes back to its peak. There is your Absolute TDC on the compression stroke. Mark away.
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Old 03-10-2004, 10:54 PM
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Thanks! now I just need someone to turn the flywheel. any volunteers?

I'm pretty handy, if I get it close by lining up the dist, do you think I would be able to turn the engine from the front, and still tell if the driver is moving?
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Old 03-10-2004, 10:58 PM
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You'll have a better chance of turning it from the front if you were to take out all the plugs as you'd lose compression thus making it a lot easier to turn. You could try it that way but I would recommend making a friend do the dirty work for you. It will get harder to do it yourself once you get into the nitty gritty of the final back and forth adjustments.
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Old 03-10-2004, 11:05 PM
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LOL, I don't think my friends and "nittygritty" go together. by the
time I can get my buddys to come over, they will have had a few beers already and are not too good at small adjustments.

Sigh, if I only had a clone of me.
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Old 03-11-2004, 06:27 AM
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Put your piston stop in the spark plug hole. Rotate the engine by hand in one direction until it hits the stop. Make a mark on the damper at the 0 mark of the timing tab.

Turn the engine in the other direction until it hits the stop again. Make another mark. Half way between these marks is TDC......simple.
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Old 03-11-2004, 12:06 PM
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While you're down there working on the balancer "dink" a few marks in a straight line on the hub and inertia ring with your center punch so you can check whether or not your elastomer ring is allowing things to move!
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Old 03-11-2004, 08:01 PM
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Quote:
Originally posted by poncho62
Put your piston stop in the spark plug hole. Rotate the engine by hand in one direction until it hits the stop. Make a mark on the damper at the 0 mark of the timing tab.

Turn the engine in the other direction until it hits the stop again. Make another mark. Half way between these marks is TDC......simple.
Thanks.
Well I don't have a piston stop. can I make one out of a bolt?
Will it do damage to the piston?
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Old 03-11-2004, 08:10 PM
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Quote:
Originally posted by FASTCHEVY
Thanks.
Well I don't have a piston stop. can I make one out of a bolt?
Will it do damage to the piston?
Yes, hollow out a spark plug. Put a bolt or round rod down through it into the cylinder and weld or epoxy it in place. then you can thread it into the spark plug hole.
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Old 03-11-2004, 08:15 PM
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Quote:
Originally posted by poncho62
Yes, hollow out a spark plug. Put a bolt or round rod down through it into the cylinder and weld or epoxy it in place. then you can thread it into the spark plug hole.

Could I use a bolt with the same type threads as the sparkplug?
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Old 03-11-2004, 08:18 PM
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You probably won't find one. If you use the wrong thread you can screw up your threads. Better to do it with an old plug.
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Old 03-11-2004, 08:26 PM
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Quote:
Originally posted by poncho62
You probably won't find one. If you use the wrong thread you can screw up your threads. Better to do it with an old plug.

I can probably find one that will fit, but I just remembered I have a bunch of those sparkplug spacers the keep the plugs from oil fouling, I will be able to use those.

Thanks guys!
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Old 03-11-2004, 09:26 PM
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What about those balancer covers. Those proform wouln'ty those work to pin point TDC???

http://www.proformparts.com/catalog/...balancers.html
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