Planet Minis

profgrif · 08-25-2007, 11:35 PM

Just installed a 71 CT70 motor in my 73 Z50 with an 88kit. Where should timing be set on this? Advanced or not? Having a weird fluctuation in timing when throttled. Timing light show slightly advanced but when throttled timing moves to the F and line on the case. Anyone have any ideas?

arlindsay1992 · 08-26-2007, 07:54 AM

Maybe you have the flywheel with the timing advance mechanism. And the only way I ever set points is with this amazing tool.

profgrif · 08-26-2007, 09:23 AM

I use a timing light. What I am saying is where do you set the timing with this motor and 88 kit?
Should it be F lined up with the notch or advanced a little or?
Just didn't know if it is different now since it's not stock anymore.

arlindsay1992 · 08-26-2007, 09:25 AM

Stock is the F mark. I have no timing advance on my Z50R, so I set it advanced past the F about 3-4 degrees.

profgrif · 08-26-2007, 09:30 AM

you think this motor has a timing advance? My other CT70 stock doesn't do this.
Why does it retard a little when throttled?
It starts about 3 degrees advanced at idle and when throttled moves to the F mark.

dirtbkr188 · 08-26-2007, 01:28 PM

Did you ride the bike with the timing set where it is yet? If not, take it for a test ride, and see how it runs. If it doesn't seem to be running right for you, readjust the points a little, and test ride it again. If it is better, keep tweaking it in that direction; if worse, go the other way on the points adjustment.

08-25-2007, 11:35 PM	#1 (permalink)
profgrif PM Newbie Join Date: May 2007 Posts: 65	Help with timing CT70 motor with 88 kit Just installed a 71 CT70 motor in my 73 Z50 with an 88kit. Where should timing be set on this? Advanced or not? Having a weird fluctuation in timing when throttled. Timing light show slightly advanced but when throttled timing moves to the F and line on the case. Anyone have any ideas?

08-26-2007, 07:54 AM	#2 (permalink)
arlindsay1992 "High Speed Record Guy" Join Date: Mar 2006 Location: Northern Virginia Posts: 4,369	Re: Help with timing CT70 motor with 88 kit Maybe you have the flywheel with the timing advance mechanism. And the only way I ever set points is with this amazing tool.

08-26-2007, 09:23 AM	#3 (permalink)
profgrif PM Newbie Join Date: May 2007 Posts: 65	Re: Help with timing CT70 motor with 88 kit I use a timing light. What I am saying is where do you set the timing with this motor and 88 kit? Should it be F lined up with the notch or advanced a little or? Just didn't know if it is different now since it's not stock anymore.

08-26-2007, 09:25 AM	#4 (permalink)
arlindsay1992 "High Speed Record Guy" Join Date: Mar 2006 Location: Northern Virginia Posts: 4,369	Re: Help with timing CT70 motor with 88 kit Stock is the F mark. I have no timing advance on my Z50R, so I set it advanced past the F about 3-4 degrees.

08-26-2007, 09:30 AM	#5 (permalink)
profgrif PM Newbie Join Date: May 2007 Posts: 65	Re: Help with timing CT70 motor with 88 kit you think this motor has a timing advance? My other CT70 stock doesn't do this. Why does it retard a little when throttled? It starts about 3 degrees advanced at idle and when throttled moves to the F mark.

08-26-2007, 01:28 PM	#6 (permalink)
dirtbkr188 3rd Gear Member Join Date: May 2004 Location: New Jersey Posts: 2,972	Re: Help with timing CT70 motor with 88 kit Did you ride the bike with the timing set where it is yet? If not, take it for a test ride, and see how it runs. If it doesn't seem to be running right for you, readjust the points a little, and test ride it again. If it is better, keep tweaking it in that direction; if worse, go the other way on the points adjustment.

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