This is true it has 8000+ and they look spun. I am not getting another case... can you think of anything I can do to half azz it?
Couple wraps of duct tape around the outer race always works for me...
Seriously, if the bearing's spun it may not come off the crank as easily as your friend suggested. I had one that resisted all my rocks and pointy sticks. Took it to Honda-san and he did no better. He eventually used a cutting wheel and peeled it off in segments with a chisel. I coulda done that...
If I absolutely, positively had to reassemble those cases, I'd consider a couple dots of the Slow JB weld to the outer races However the Right Thing to Do is to replace the crankcases.
I just did the boost port work on these cases yesterday. so there is no way that I won't try putting this back together. I don't have the $200+ for a new case. I don't plan on racing, I just want to get some miles out of it and be done. When I get the aluminum shavings all cleaned off I will take macro pics of the case halves so you guys can tell me what you think. I might be mistaken about them being spun. this is my first complete teardown of a 2 stroke.
Actually it's not too far from the truth. I deep-froze my bearings and baked the cases in the oven to about 275. One bearing sizzled as it dropped into its case, requiring just a light rap with a big socket sized to the outer race. The other needed a little more persuasion, but I highly recommend the Freeze-and-Bake method to seat your new bearings. I got my NTNs from Honda-san for under $40 IIRC, and no shipping.
Wheelman-111
Most of my money is spent on scooterparts. The rest is just wasted.
"ISO": '03 Vespa ET4 Malossi187 74MPH
Flash 9: 2001 Elite SR Contesta 72 ZX Tran, 9:1 Gears, Stock Airbox/Carb/Pipe 58.8 MPH
Punkin: 2010 Vespa/Malossi S78, 61MPH
Honda's Manual describes the Approved method. I do believe a hammer is involved, along with a bearing-sized drift of some sort. Press should work too, but be sure the case underneath is well-supported. You could crack that in a heartbeat with a press.
Wheelman-111
Most of my money is spent on scooterparts. The rest is just wasted.
"ISO": '03 Vespa ET4 Malossi187 74MPH
Flash 9: 2001 Elite SR Contesta 72 ZX Tran, 9:1 Gears, Stock Airbox/Carb/Pipe 58.8 MPH
Punkin: 2010 Vespa/Malossi S78, 61MPH
So I ate 2 wrist pin clips now in 2 months. I am looking for a new 50mm piston and rings... I would like to have an extra. I am also going to order my 3 50mm bore. this time I am not going to be using a wrist pin clip with a tab on it. the tabless ones are much more secure even if they are a pain to remove.
kingearwig wrote:So I ate 2 wrist pin clips now in 2 months. I am looking for a new 50mm piston and rings... I would like to have an extra. I am also going to order my 3 50mm bore. this time I am not going to be using a wrist pin clip with a tab on it. the tabless ones are much more secure even if they are a pain to remove.
Did you really eat them? How did they taste?
Did you have another one come off?
The ones with the tabs are nice. I use needle nosed pliers to sorta twist them in.
It seems to me, that maybe you are bending them too much to install them, and that is why they are comming out.
new best 1/8th mile time 9.647 seconds @67.155 mph 310lbs total weight
well when I put it back together the last time I used the best looking one I had. that one had 1 tab. I couldn't find the match to it so I put the next best one I had on the other side. it had 2 tabs. and it was made of thinner wire. I should have never trusted it.
It tasted terrible and I think I broke something eating it. It tasted just like buying a new bore.
Well its been a long time since I have updated. since the last post I put the motor back together with a new piston and a home honed bore. In order to remove most of the scratches I had to hone the bore to a point that it was obviously to large for the new 50 mm piston I got. So after 800 miles the piston slap finally broke the skirt of the piston off.
So after all this she is back together with a 48 mm bore and a 42.3 mm mini stroker. We'll see how many miles I can get out of her this time.
so there is no way that I won't try putting this back together. I don't have the $200+ for a new case. I don't plan on racing, I just want to get some miles out of it and be done. When I get the aluminum shavings all cleaned off I will take macro pics of the case halves so you guys can tell me what you think. I might be mistaken about them being spun. this is my first complete teardown of a 2 stroke.
