Vintage Dirt Bike Q & A
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MT to CR CDI
https://vintagedirtbikeforums.alp-sys.com/viewtopic.php?f=21&t=372
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Author:  Surlysteve [ Thu Sep 16, 2004 8:54 pm ]
Post subject:  MT to CR CDI

Is it at all possible to make a 74 mt125 cdi? I have a flywheel, coil and a cdi from a 74 cr125 sitting in a box. What do you think? Is it possible? What else would need to be done?
Thanks,
Steve

Author:  ricortes [ Fri Sep 17, 2004 9:27 am ]
Post subject: 

I've never done that swap but I have done others.

Before you get started you can bench test the entire set up. I just jam a screwdriver into the flywheel and spin it with an electric drill. Don't run it w/o the spark plug threads touching the mounting bracket of the coil or you may mess up the coil's secondary winding insulation.

It's a good idea to use a timing light for the final installation. I just park my bikes in front of my car and use its 12V battery to power the timing light. A cheapie ~$42 inductive timing works fine for me.

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