Honda ST90 Engine swap

#1
I am working on a Honda ST90. The motor spins freely with no compression. I want to take this motor out and rebuilt it at a later date.

I have a running XL70 4 speed and was wondering if this would fit? Are the ST90 frames like the CT70? They look the same. (I know the XL70 motor will fit in a CT70)

I also have a CT90 motor, if the XL70 won't fit.

Has anyone ever did this swap?

Thanks for any help.


Tom
 
#2
The 70 wont fit due to bolt pattern BUT the CT90 will ,, the one ya want is a CL90 engine with 4 speed manual ,, really makes it a runner , I did this to my st90 a few years ago .. I did some mods off DRatvs web site it was a really fast bike doing easy wheelies with me on it
 
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