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Post by KSR Moto on Aug 16, 2018 3:00:46 GMT -5
How do I find my TDC if my markings on the flywheel are wrong?
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Post by 90GTVert on Aug 16, 2018 8:30:02 GMT -5
If all you're doing is checking/adjusting the valves, you don't need it to be so spot on like with a degree wheel. You just need it to be roughly TDC on the compression stroke. You can put something through the plug hole to feel when the piston is reaching it's peak, and both valves will be closed if it's the compression stroke, or really right between the compression and power strokes.
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Post by AtariGuy on Aug 17, 2018 2:46:28 GMT -5
Also, if you remove the valve cover and slowly roll your engine over (i use one hand on the kickstart lever) you can watch your camshaft roll over. Find the spot where the cam is not trying to lift up on the rockers, you (might) should find a slight bit of rattle in your rocker arms between the cam and the valves. If those are still tight while the cam lobes are down, you will need to adjust your valves. 90GTVert also has a video on his youtube channel on how to set your valve lash. If you need to find TDC on your crank for stator/flywheel stuff, the cam sprocket should also tell you that too, there should be 2 little holes on opposite sides of the cam and one larger hole that would be 90° from them - the 2 small holes should be straight in line with the head and the big hole straight up (or hiding beneath the lip of the head between the exhaust and intake stroke - you'd see the cam lobes standing up then) |
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ratdog
Scoot Enthusiast
Posts: 342
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Post by ratdog on Aug 17, 2018 7:19:31 GMT -5
The best/ simplest way is to take out the plug and put something in the hole that you can put a little down pressue on. You will feel when the motor is at tdc. Of course the best thing would be the probe on a dial indicator, but I’m guessing that if you had one, you would not be asking the question
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