Well damn! The stock case will need a lot of added material and machining to accept the AM6 cylinder which is what zms uses. If you want to find a cylinder on your own, look for an engine with either a 38mm or 40mm stroke. That's a good starting point. Then cylinder height. All mine are 69.2mm.
Bicycle Motor Works has the billet cases and last I checked he had non drilled and drilled.
I think like Gary said fab mounts and put a ktm l/c or any Japanese 80-85cc and that's plenty enough power and speed for a bicycle.The am6 with billet case and all the plumbing would cost more, put out less and allways be a pain in the ass whereas put a say yz 85 in a bicycle and you have a 70+ crazy fast ride that will be reliable, power train wise anyway LOL you will still have to build up the bike to withstand the task.Ok so what is drilled and not drilled?? Someone else was telling me about a adapter for the am6..is that what you mean when you say added material??
And do I to go with the am6 doing a swap?? Because if I'm doing it then why not go to like a 110cc-125cc..or will that not work
My thoughts exactly. At that point there is no way I stick with a chinagirl...I'd put a KTM65 or bite the bullet on a monster KX85 motor and make more power without all the hassle and reliability issues. A KX85 would be bananas but I'd recommend a custom reinforced steel frame...even a felt faker would be sketchy with all that power and they are one of the strongest frames available right now.I think like Gary said fab mounts and put a ktm l/c or any Japanese 80-85cc and that's plenty enough power and speed for a bicycle.The am6 with billet case and all the plumbing would cost more, put out less and allways be a pain in the ass whereas put a say yz 85 in a bicycle and you have a 70+ crazy fast ride that will be reliable, power train wise anyway LOL you will still have to build up the bike to withstand the task.