What year motor for a conversion?

[89mustang]

I'm going to start my build in a couple of months. I have a steel framed 97 now but it's in pretty good shape don't really want test it apart. I've been looking far a complete bike or motor. I know 85-88 you have to drill the cases. Any help would be appreciated

[Kuma]

90 or newer will be your best all around choice, no water pump issues with the larger clutch and you don't have to plumb the water to the cylinder odd.
just my

[89mustang]

Thanks. I'm looking for one and found a couple older motors. I've read they discontinued a lot of parts for those. I was aware of water pump issues. Not the other stuff.

[Jercs]

89mustang,

We have a 1990 CR500 engine for sale. Feel free to contact us at cp500r@gmail.com.

Thanks,

CP500
www.ConversionParts500.com