LewieBike
Well-Known Member
The main problem with doing this would be making sure the rod lengths, or the stroke is similar or the same between the two engines otherwise the piston might go too high in the cyl and hit the head, or it might go too low.
True. There's a complete cylinder/piston crankshaft/ needle bearings and rings for a Husky 372 on Ebay for about $90.
I believe this is the 52 cc engine variant my JonnyRed saw uses.
I'm thinking if I do another 48cc engine, I'll look into making a cylinder base adapter and see if any one local machine shop can press off the crank axles from the HT engine and press them into the 372 crank. According to my calculations, the Husky 372 would have a 37 mm throw at 42mm bore and should fit the cylinder spigot with some filing of the bolt down holes and an adaptor The upside, big ass pumper carb, an engine that pulls strongly from 3000 to 10K. and a unitzed cylinder with better porting and exhaust timing.
Needs more research but I believe it can be done.