Adjusting Ignition Timing on a 2 Stroke Motorized Bike (Updated) 

Good advice. I do this too. Plus the I sand away the paint on the engine everywhere the magneto makes contact. It makes reliable spark with a stock CDI.

This is the mod you where talking about, I like this better than filing the key-way, My blue bike has a filed key-way, I enjoy the Smolik plate , I use the flash cards they are thick are work perfect 👽👍🏻

So all I gotta do is drill those holes out bigger and make sure my magnet is sitting the same way you had it?

I changed from stock cdi to bbr stage 2 cdi.. now i have no low end power... do you think stage 2 cdi is to far advance? Should I go back to stock cdi or retard timing? Just purchased a sp timing plate..

My dirt bike used to have a sticker “don’t laugh this bike is retarded” but in reality it was high compression and timing was advanced. How would you add flywheel weight to these motors ? I’m building a dirt jumper with low gearing and need that low end grunt to get up the jump faces

Im getting the 4th generation grubee cdi tomorrow and going to do exactly what you did nut eant to make sure i do it right

What all did you do to get a different exhaust on that bt80 you have?

So I got a Catnip high performance cdi kit from California motor bikes, It has a strong spark and it is firing to early. This is on a Zeda 80 Firestorm, all stock. It will start while you are pedaling but when you stop pedaling and the bike slows down it locks the engine up. I think possibly it's a flaw in the engine timing. The Stock cdi works fine but the spark is so weak that it doesn't actually ignite the fuel mixture until maximum compression. That's my theory anyways. I'm going to try your mod and see what happens. I guess it could also be the CDI, but I have 2 of them that do the exact same thing.

I found a keyway set. If anyone is interested I have a link.

Thanks for the tip.I have to ask about the paint on the case behind the magneto though.? I was given a bunch of grief because I actually used a stud into my frame to ground the wire from the magneto as they thought it useless. I use rubber to insulate my engine for vibration,and the frame's sealed against rust.I figure the better the ground the best.?. Never had a coil,magneto,nor CDI burn up in over 4K miles. Wouldn't the case paint need removing behind the magneto too for best contact? Edit=I'm in NO way being difficult or mean.This is a real question.Thank you.

Doesn’t motor turn clockwise? Shouldn’t magneto be moved counterclockwise to advance?

Thanks for the more updated content thats not years old

I replaced Avery thing there is for timing and i steel don't have any spark

Witam z Polski pod magnetem w obudowie karteru jest podtoczenie i tam siada magneto dopasowane do tego podtoczenia to jest po to aby od wibracji nie przestawiło się i nie przykleiło się magnesem do magneta , najlepszym rozwiązaniem jest lekkie rozpiłowanie od środka tego magneta a nie wiercenie otworów pozdrawiam