Category Archives: Honda CG125-1984

CG250 engine project begins in earnest

I bought a 167FMM CG250 (233cc) Chinese copy engine. I’d like to use it in my recently completed silver CG125 but as the old CG125 is 6v with points ignition and the CG250 is 12v with electronic ignition I don’t much fancy changing the wiring harness and all the light bulbs. So I have been investigating swapping the crankshaft and cylinder, piston etc to some spare CG125 crankcases I have. The first issue is the crankcase cylinder opening size isn’t big enough to accept the larger cylinder liner, so today I set about boring the crankcases to accept the bigger liner.

Wheel Lacing Delays

And this is what happens when you buy the wrong length spokes….Doh! Next time I will not try and measure an old spoke from an 18” rim and then guess what length I need for a 17” rim. The spoke supplier did tell me and even had a chart, but I didn’t think he was right. I now know he is correct. At least I learnt the correct assembly process this time…