UPDATE:
Well, I got my parts for my bike yesterday and got the bike all fixed up and ready to travel again.
The Good: I upgraded the Jug on the bike and made my bike a 58cc now. I didn't have to change the drive train at all which is great. I just swapped the piston rings and jug (complete top end conversion) Everything bolted togther like it was meant to do so and the 48/49cc even had a bit longer of a stroke than the 58cc giving me even a lil bit more power.
Also I now have an extra top end... I thought I had melted the top end as the bike was basically seized however, when I took the bottom end apart I found just a little piece of gasket the was making the engine tie up I removed that put the bottom end back together and it was as smooth as the day I bought it.
The cyclinder did have a VERY small amount of scoring due to the hang up and the piston did as well. The rings were fine. I rehoned the cyclinder making sure not to bore off any metal just smoothen the surface (as I didnt want to loose compresiion). I used a VERY light hone and now have a nearly prefect head again. I did however buy a new piston to go with it (**** 11$ or a potential issue... I decided to spend the 11 $).
LASTLY a WARNING:
Some people will try and tell you you can swap the top end of the GT2 48cc Grubee with a GT4 66cc Grubee top end ... This will NOT work as I mentioned before the 48cc stroke is just slightly longer and you will not have the clearance. I kept the top end and bought a piece of metal that I am going to fabricate a space to go inbetween the cylinder and bottom end. I am Sure this will work and basically have a machine shop in the basement here at my Uncle's so fabrication will be easy (I am basically making an extra thick gasket type space the adding gaskets to top and botom of it to assure for no leaks. I am not 100% sure how long this fabrication will hold up Howver, I figure why not play with it a bit. Now my engine will be able to be a 48, 58, or a 66... Kinda kewl, and will be nice as spares or to change power when I hit the bigger mountains in the rockies. I am also fabricating a new front and rear sprocket. I have tones of motorcycle parts so I am machining them. The front was easy as I was basically able to just slide it on with a couple mod's. The rear I am still playing with and is a bit more difficult. I am doing this mainly to change out chains. I am going to be changing to a 420 chain (the same thing I have on my yamaha r6) this will be MUCH more heavy duty and should save some time as I have already broke a couple chains.
Anyways, I will let you all know how it goes.
MARSHALL
