| Author | Message | ||
     Reepicheep |
Made you look!  Fortunately, it is not on the uly, it is on a 1999 KX-80 I just bought for the 11 year old... And the craigslist seller (very cool) was totally up front about it (no title and bad crank, $500 OBO). I opted for OBO ($400). The rest of the bike was in very good shape, and splitting the cases on a dirt bike isn't difficult, so I feel like its a fair deal for both of us. He included a new Weisco .020 over piston. But he had run that in there briefly with the bad crank, so the skirt is scuffed. And there is some light scoring of the cylinder, but it's down pretty close to the ports (this is a two stroke). Given the piston has some light scratches and that it would be hard to sell used, I think I'll just slap it in there with the new crank and run it for a few hours and see how it holds. If the compression is poor, I'll pull it back off and send it out for a bore and nicksil and turn it into a 100. Or stalk stock 100 parts on ebay for a bit. I wont regret the 100cc big bore kit if I have to do it, but it'll get $$ fast ($500 for replate and new piston / rings / bearing / clips), then $200 for new exhaust to match the new displacement, then $100 for new carb (though the old one might work if jetted right). My goal for it is to make it a woods bike, so a KX-80 chassis with a 100CC motor with carb and exhaust for an 80 might actually be a pretty neat package... not the top end I could otherwise have, but a torque monster (for a two stroke) and really durable. Basically, I am trying to build a KDX-100. I'll post pictures later... modern little two strokes are just amazingly simple and elegant motors. | ||
| Prior |
Very cool and a great project to work on with the 11 year old. Still haven't gotten my old dirtbike yet; pickup is on it's last legs, so need to replace that (so I've got something to haul the dirt bike in) and then we'll be in the market for a woods bike! | ||
| Court |
Actually... You hit a home run. 20 years from now, while you and him are watching his kid crawl around on a blanket, you'll both remember the "project" more than the bike. Bikes can be bought, the time working on the project is the precious commodity. Well done. | ||
| Strokizator |
When my stedaughter's kid was 12 I bought him a used cr80 big wheel. That thing ripped! I used Blendzall 2-stroke mix and think nothing sounds or smells better than a small cc dirt bike at full boil. Have fun building some memories | ||
| Road_thing |
I love the smell of Castrol R in the morning... rt | ||
| 86129squids |
My first MC was a TS125 Suzook- I tore down and rebuilt that motor a few times, had it ported/polished, put Boyesen reeds in, made it into a cafe bike, then went looking for CB125's to blow away... Reeeeep, Reeeeeep! a Cheeeeeep Kaw, REEEEEP!!! (DIY 2-smoke sound effects...)   | ||
| Blake |
Cool dad you are. | ||
| D_adams |
Why not re-sleeve it with a cast iron bore? I used to do those back in the 90's, I think it was only about $100 for the new liner. Machining wasn't too bad, maybe another $100-150. New piston, wrist pin, etc. and it would be good to go. | ||
| Iamike |
Oh I remember those days - Jr. finding his first bike, thinking we got a good deal. Spending a bunch of money making the good deal work right. Of course dad needed a dirt bike too (much to mom's chagrin). | ||
| Johnnymceldoo |
Reep I just heard about a place in hamilton called lake bailee gun club that has some motorcross tracks, camping, fishing etc. and might be a good place to ride. Its a little pricey but they seem to have alot to do. Just google the name for their website. | ||
| Reepicheep |
Cool, I'll check them out. I still have the 1971 Bison in the garage. It's actually running great (or was the day before the tercel cracked my pelvis)... Since then, I've been hard pressed to get motivated to turn a bike with drum front brakes into a dirt bike. If anyone wants it, insult me with an offer... I'm pretty unoffendable. The cast iron bores are under-rated... the mainstream dirtbike guys dismiss them, but they still work great. A buddy bought a KDX220 with one and it was fantastic. In theory, the nikisil (normal aftermarket) or deposited tungsten or something or other (factory) coating gives almost as good a wear, but conducts heat far better. You can't hone the nickisil. You probably could hone the factory one just a bit. The thing is the nicisil and iron liner are about the same price ($300 or so). So most people just go with the nicisil. Iamike... exactly. Roadthing... EXACTLY? What's that smell? Not sure, but it smells FAST! Alex, you need to get up here and take the KDX out and break it in some interesting ways... I'll post pictures soon... | ||
| Thumper74 |
I'm 28 and remember my dirtbike from when I was 6 or so. We had to start it with an impact wrench. When it didn't run, most of the time, my friends would push it up a hill and coast it down. | ||
| Whisperstealth |
I've never had a bad crank... | ||
| Oldog |
err Bill you can hone nickasil, as its harder than the stones of the hone.. honeing is used to salvage cylinders with smudges of aly on them ( removing the smudges, hey I read it on the internet ) 2 smokes are lotsa fun father son woods outings sound great.. | ||
| Reepicheep |
Cool! Never thought of that. | ||
| Swampy |
My oldest son saved his money and bought a KDX 80 when he was probably 10. It sat for a while then the bug hit him and he started saving money for a top end. We put that thing together and it RIPPED! It was a man killer, he was a little scared of it and never really got the concept of power band, but if he ever did he would never have come back! Once you got the revs up it would lift the wheel and just flat out fly. In my travels every now and then I would find a similar little bike sitting in the garage then I would start looking for the kid with the cast, more times than not the dad had the cast or was walking with a limp. I'm telling you those things are more dangerous than a small wheeled scooter... | ||
| M1combat |
My step mother bought me an IT-250 when I was 11. I still think she was trying to kill me. I figured out the power band thing REAL quick though... |
