KX Riders

Maintenance & Technical => KX100 / KX85 / KX80 / KX65 / KX60 => Topic started by: Polloloko80 on September 24, 2015, 07:04:41 AM

Title: 90' kx80 bottom end rebuild
Post by: Polloloko80 on September 24, 2015, 07:04:41 AM
So i got my crankshaft rebuilt and started the reassembly on sat. I finished yesterday and got some pics. I actually did this rebuild not knowing anything about 2 strokes. The only thing i had was my clymer manual the internet and youtube. So i kinda proud of myself. Although i must sdmit the shift shaft wasnt sitting properly snd ehen i tried putting the clutch cover on a got a hairline crack on my cover. I just JB welded it. Hope it works. Other thsn thst its good to go. Ima mount it on fri or sat. Cant wait to ride it.

(http://i.imgur.com/sbvvVNG.jpg)(http://i.imgur.com/zo7GA27.jpg)
(http://i.imgur.com/LPitiSb.jpg)
Title: Re: 90' kx80 bottom end rebuild
Post by: Polloloko80 on September 24, 2015, 07:06:53 AM
(http://i.imgur.com/3JkV3Db.jpg)(http://i.imgur.com/tZSNIVH.jpg)(http://i.imgur.com/SXAKNyM.jpg)
Title: Re: 90' kx80 bottom end rebuild
Post by: dave916 on September 24, 2015, 08:46:06 AM
Did u use a crankshaft jig when pressing that crank?  Was it a tight fit when pressing?
Title: Re: 90' kx80 bottom end rebuild
Post by: Polloloko80 on September 25, 2015, 05:03:23 AM
I actually took my crankshaft to a nearby Kawasaki dealer and shop and had them do the connecting rod and big end bearing rebuild. I didnt press the crankshaft myself.
Title: Re: 90' kx80 bottom end rebuild
Post by: dave916 on September 25, 2015, 05:41:29 AM
Quote from: Polloloko80 on September 25, 2015, 05:03:23 AM
I actually took my crankshaft to a nearby Kawasaki dealer and shop and had them do the connecting rod and big end bearing rebuild. I didnt press the crankshaft myself.

I meant pressing it into the cases/ main bearings{i was looking at you bottom photo with the tusk tool }
Title: Re: 90' kx80 bottom end rebuild
Post by: Polloloko80 on September 25, 2015, 09:05:59 AM
To press the cases together i used the tusk crank puller and installer and that got my cases nicely together with not much effort. It was a great experience using these tools that ive never seen and then seeing how they work and actually get everything nicely fitted.
Title: Re: 90' kx80 bottom end rebuild
Post by: dave916 on September 26, 2015, 10:53:56 AM
Quote from: Polloloko80 on September 25, 2015, 09:05:59 AM
To press the cases together i used the tusk crank puller and installer and that got my cases nicely together with not much effort. It was a great experience using these tools that ive never seen and then seeing how they work and actually get everything nicely fitted.

You should use a crank jig to stop the crank webs pressing together {would untrue the crank doing it like that}
If cases went nicely together with not much effort you probably got away with it
 Good luck with build