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150cc GY6 and Under Engine Tech GY6 and Smaller Technical Discussion Forum |
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#1
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Help! Need top dead centre help
I'm changing my camshaft on my 150cc and I don't know which mark on the flywheel to use for top dead center.
Any advice?
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_______________________ ASW Carbide 150cc Dr. Pulley variator, 10g sliders, 1500 rpm clutch spring, 39T drive sprocket, A12 camshaft, Intake with Uni Filter, 126 main jet, 38 pilot, performance CDI, performance coil, iridium plug. Now a lean wheel spinnin' machine. |
#2
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stick a straw down the spark plug hole and rotate the flywheel til you have it on the money. i don't trust marks ....
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#3
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On my Carbide it is the end of the long block on the left side of the T.
Check cam also for big center hole. I noticed the line and the hole where on the money every other spin of fly wheel.
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Growing old is mandatory Growing up is optional https://www.youtube.com/watch?v=NEXoa-8d7qE |
#4
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On the gear on the cam you'll have 3 holes 1 will be larger and it needs to be on top, the 2 smaller holes should line up even with the top of the head. If both valves are closed then you should be on TDC
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#5
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Thanks all for the assistance, including Tom. New cam is in and she rocks. Torque is great, but with the snow we had that day, I wasn't going anywhere fast. fishtails and drifting was awesome though! on a few dry spots, I notice it gets up to speed a lot quicker. With my 39 tooth sprocket, I might need to get some heavier variator weights. Right now, I'm running 10g sliders. I'll go up to 11 or 12 I think.
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_______________________ ASW Carbide 150cc Dr. Pulley variator, 10g sliders, 1500 rpm clutch spring, 39T drive sprocket, A12 camshaft, Intake with Uni Filter, 126 main jet, 38 pilot, performance CDI, performance coil, iridium plug. Now a lean wheel spinnin' machine. |
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