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Honda St90 & Ct70 engine swaps

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Hi everyone!! I would like to know if those chinese 125cc engines will be a ''bolt on'' engine into a Honda st90 & Ct70 frame with no modifications needed... And will it use the honda carb, electricals, pipe, etc... Thank you vey much!!

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They will on the 50s and 70s but not the 90s. The 90 cases have 3 engine mounts and the 50 / 70 engines hae 2 engine mounts.

Dwight

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But what if those two mounts on the 50/70s line up with two of the three on the 90s....

Even if they don't, I'd be looking at fabbing my OWN engine mounts. Those hot-rod Lifan motors look like they'd be a hoot in a vintage 90 frame, say, an S90 or something.

Kirk

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Wouldn't electrics be a pain to set up? I'm thinking along the lines of 6V/12V, alternator/magneto, CDI/points, etc.

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dratv.com shows ya how to do it and they sell an adapter for the other engine mount

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Some motors require some footpeg modifications, and all of the classic will need some kind of 12v swap because the stock motors were 6. Im getting ready to do a 150 4speed manual to one of our CT70s my self. :lol:

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dratv.com shows ya how to do it and they sell an adapter for the other engine mount

A place that has parts for my '66 trail 90, that rocks! Thanks for posting it!

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