Author Topic: Cam chain tensioner ajustment with electronic ignition  (Read 5193 times)

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Offline flatlander

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Re: Cam chain tensioner ajustment with electronic ignition
« Reply #100 on: August 10, 2023, 01:33:12 AM »
Seriously what's the best way to mark TDC with my ignition module setup?

There is no way to index the PowerArc/C5 ignition rotor to the crankshaft, unlike the stock advancer base which has a pin that fits into a hole in the end of the crankshaft. It was one of the design faults that required reinstalling the stock unit to set the motor to TDC, or finding TDC through the spark plug hole with an indicator and degree wheel, and since there are no timing marks, you can't verify the timing with a strobe. The main problem with them was that they didn't function as touted, and they weren't reliable, especially in high temps.

just to point out the obvious:
a great long-term fix that eases future maintenance would be, to replace that ignition  8)

Offline AlekStooge

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Re: Cam chain tensioner ajustment with electronic ignition
« Reply #101 on: August 10, 2023, 04:11:15 AM »
I think what I will do is replace it with a Dyna same as my coils.

Offline AlekStooge

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Re: Cam chain tensioner ajustment with electronic ignition
« Reply #102 on: August 10, 2023, 09:33:33 PM »
I thought about the longer attachment. I decided to just bring the dial down and pre-load the spindle more. The intake side turned out okay at 102° centerline and the duration actually made sense after making this adjustment.

The exhaust side is problamatic. :-\ with my setup. I've set the indicator up on different parts of the retainer. Made sure it's not touching the rocker and cover. Cylinder at TDC compression. The dial acts up. It turns about 3° the opposite direction then switches up and travels only .180. It stops only for a moment (unlike the intake) and switches direction.

I did the numbers just to see and I get 11.5° BBDC and 47.5° ATDC at the .034 mark. In end up getting a some what normal number before subtracting 47.5 and then I get centerlines in the 70s.

Somethings off with my setup. I am having a hard time getting the indicator at the correct angle through out the proceesm It starys out at the same angle but ends up like in the photo below. (Photos are from two different attempts).

I didn't have as much time today to work on this. I am starting another bike up tomorrow, so I prepared for that.