rebuild
- Thread starter gubba
- Start date
BarelyAWake
New Member
By "rebuild" whadda mean? If it's jus a top end then just take it apart, there's really nuthin' to these things - they're great for learnin' the basics that way.
If it's the lower it gets a lil tricky, you've got bearings to pull and shaft silliness - but I'm sure there's a diagram somewhere... I know there is, I just can't remember where atm... maybe someone will beat me to it and post a link lol
Even still - 2strokes by their nature are dead simple. I'd pull that puppy apart to see what yer getting into, if you have probs we'll be glad to help with details I'm sure.
If it's the lower it gets a lil tricky, you've got bearings to pull and shaft silliness - but I'm sure there's a diagram somewhere... I know there is, I just can't remember where atm... maybe someone will beat me to it and post a link lol
Even still - 2strokes by their nature are dead simple. I'd pull that puppy apart to see what yer getting into, if you have probs we'll be glad to help with details I'm sure.
azbill
Active Member
norm has a very nice tear-down/rebuild thread 
http://motorbicycling.com/f39/bicycle-engine-total-tear-down-391.html
http://motorbicycling.com/f39/bicycle-engine-total-tear-down-391.html
BarelyAWake
New Member
Bill wins - I fail 
Humsuckler
New Member
you know, rebuilding your top end due to ****ty compression or wear is nothing. a wrist pin bearing, a new pisser, some rings and a quick pass with a drill hone. Good to go! (dont forget the gaskets) lol
The bottom end isnt much worse, aside from the fact that its totally apart and you really have to have your eyes straight and head full of fresh oxygen when you get to work. wouldnt want to leave a circlip in the bottom end cause you just worked 12 hours.... or get stupid and try to beat your crankshaft off the case..... which if your curious i have done.
I dont mean to "boast" but i can rebuild the top end of a 125 dirtbike in under an hour and have it "rough" started for break in. thats what happens when you race MX for a few weekends and ride like you think your McGrath or Stewart.
The bottom end isnt much worse, aside from the fact that its totally apart and you really have to have your eyes straight and head full of fresh oxygen when you get to work. wouldnt want to leave a circlip in the bottom end cause you just worked 12 hours.... or get stupid and try to beat your crankshaft off the case..... which if your curious i have done.
I dont mean to "boast" but i can rebuild the top end of a 125 dirtbike in under an hour and have it "rough" started for break in. thats what happens when you race MX for a few weekends and ride like you think your McGrath or Stewart.