All Things Moto! Dirtbike Forums

Go Back   All Things Moto! Dirtbike Forums > Dirt Bike - ATV - Suspension Forums > 2-Stroke Dirt Bike Forums

Reply
 
LinkBack Thread Tools
  #11  
Old 08-10-2012, 08:35 AM
Randog Leader's Avatar
Pro Class
 
Join Date: Feb 2012
Last Online: 10-07-2015 10:35 AM
Location: Birmingham, AL
Posts: 1,643
Default

     

Yep, that's the one on the CR80 as well. What I did was fashion my own tool with a piece of flat aluminum that was in the shape of a fork. I drilled two holes that lined up with the retaining bolts, then bolt the tool up and break the nut loose. I was lucky enough to have access to the aluminum "fork". You will have to get creative with it. Just measure the distance between the spring towers and head to the hardware store to find something that can be fabricated into a holding tool.
Reply With Quote
  #12  
Old 08-10-2012, 11:41 AM
ATM! Addict
 
Join Date: Oct 2003
Last Online: 04-14-2014 08:07 AM
Location: alaska
Posts: 10,344
Default

the clutch and full transmission can be left right where they are. you remove the left side of the transmission case after taking off the clutch cavity cover. you will need to remove the nut that holds the primart gear on the crankshaft. I dont believe you have a powervalve on that model, as it dont think Kaw added that until about 2000.

If you are satisfied with the bearings in the magneto side case, you may wish to skip messing with anything other than pulling the crankshaft out and replacing it with a new one or rebuild the old one.
Reply With Quote
  #13  
Old 08-10-2012, 12:13 PM
Beginner Class
 
Join Date: Jul 2012
Last Online: 08-26-2012 08:51 PM
Location: sacramento
Posts: 46
Default

Yeah I don't have a powervalve on it. And on the primary drive gear it is not bolted on it has a c-clip to keep it on. And also are the pits in the piston bad like it will it mess up my motor in any way yeah the piston doesn't even have an hour on it and its doing that


Well randog I guess I don't need the clutch holding tool according to ossagp cause I can just leave the whole clutch and transmission in

---------- Post added at 05:13 AM ---------- Previous post was at 05:02 AM ----------

To remove the flywheel bolt will a automotive oil filter remover ( the one that has the belt on it) work for the flywheel to hold it in place?
Reply With Quote
  #14  
Old 08-10-2012, 12:15 PM
ATM! Addict
 
Join Date: Oct 2003
Last Online: 04-14-2014 08:07 AM
Location: alaska
Posts: 10,344
Default

that is right, just a snap ring. two things I would suggest if you are trying for fast and easy: heat the socket like i mentioned. on the main bearing, that means you have the stator plate out. you may need to do the same to the countershaft bearing socket, but usually tapping lightly on the shaft end will knock it loose and everything else,. once y ou have the left side of the transmission case off if you have some problems getting the crankshaft or the bearing out of the other side a propane torch or better yet a heat gun may come in handy.

Don't pry on the sealing surfaces. if you cant get the crankshaft out easily after the left side is off you may want to heat the bearing off of the end of the crankshaft and then put the case back on, it goes really easy without the crank bearing on the left side, then you just lay the cases on the left side and mallet or wood hammer the crankshaft loose, take off the case and put bearings and a crankshaft back in and finish it off.

i use rubber bands to keep the gears in place on the shafts while all that is going on when they are open. doesnt really hurt to leave them on while you assemble if need be.
Reply With Quote
  #15  
Old 08-10-2012, 12:28 PM
Beginner Class
 
Join Date: Jul 2012
Last Online: 08-26-2012 08:51 PM
Location: sacramento
Posts: 46
Default

Okay so a heat gun will might work for the bearing socket then after that tap the end of the shaft with like a wooden hammer or rubber mallet
Reply With Quote
  #16  
Old 08-10-2012, 01:30 PM
ATM! Addict
 
Join Date: Oct 2003
Last Online: 04-14-2014 08:07 AM
Location: alaska
Posts: 10,344
Default

when i say a wooden hammer it is my way of saying any piece of wood. old baseball bats are good for something when cutdown for instance.
Reply With Quote
  #17  
Old 08-10-2012, 01:58 PM
Randog Leader's Avatar
Pro Class
 
Join Date: Feb 2012
Last Online: 10-07-2015 10:35 AM
Location: Birmingham, AL
Posts: 1,643
Default

He pretty much said it all.

Hondas and Kawi's are usually either close to or even less to replace the whole crankshaft than to buy a rod rebuild kit and the labor to rebuild it. I think yours may be too old and hard to find, though.

Try to find a rebuild kit for $60-75 and then labor is about the same.

I recommend having the crank rebuilt because you have it apart and in your hand. Why take the risk of putting it back in, only to have it seize shortly thereafter?

It happened to a friend of mine . . . okay, it was me, and it sux!
Reply With Quote
  #18  
Old 08-10-2012, 03:15 PM
Beginner Class
 
Join Date: Jul 2012
Last Online: 08-26-2012 08:51 PM
Location: sacramento
Posts: 46
Default

Quote:
Originally Posted by ossagp View Post
when i say a wooden hammer it is my way of saying any piece of wood. old baseball bats are good for something when cutdown for instance.
Oh, yeah I have a lot of wood laying around in my back yard

---------- Post added at 08:15 AM ---------- Previous post was at 08:08 AM ----------

Quote:
Originally Posted by Randog Leader View Post
He pretty much said it all.

Hondas and Kawi's are usually either close to or even less to replace the whole crankshaft than to buy a rod rebuild kit and the labor to rebuild it. I think yours may be too old and hard to find, though.

Try to find a rebuild kit for $60-75 and then labor is about the same.

I recommend having the crank rebuilt because you have it apart and in your hand. Why take the risk of putting it back in, only to have it seize shortly thereafter?

It happened to a friend of mine . . . okay, it was me, and it sux!
I found one on eBay everything included (crankshaft,crank bearings, gaskets, and seals I think that's everything)made by wiseco for $129 I think I know it is around that price range
Item# 230488850926
Reply With Quote
  #19  
Old 08-10-2012, 03:35 PM
Randog Leader's Avatar
Pro Class
 
Join Date: Feb 2012
Last Online: 10-07-2015 10:35 AM
Location: Birmingham, AL
Posts: 1,643
Default

Perfect!

That's a friggin' steal right there, jump on it.

At least there are 41 available.
Reply With Quote
  #20  
Old 08-10-2012, 11:28 PM
Beginner Class
 
Join Date: Jul 2012
Last Online: 08-26-2012 08:51 PM
Location: sacramento
Posts: 46
Default

Alright I go ahead and get that maybe post some pics when I am rebuilding it

Go to this link
Should my gas be this color I don't know how to mix lol
This is only 1/8 of a paint can top
http://i1063.photobucket.com/albums/...R/69055b44.jpg
Reply With Quote
Reply

  All Things Moto! Dirtbike Forums > Dirt Bike - ATV - Suspension Forums > 2-Stroke Dirt Bike Forums


Thread Tools


Similar Threads for: Need help splitting case on 93 Kx80 big wheel
Thread Thread Starter Forum Replies Last Post
Case splitting xM0NSTERRR 2-Stroke Dirt Bike Forums 2 08-03-2012 05:53 AM
Splitting the case on '95 125 hunter77ah 2-Stroke Dirt Bikes - Honda 39 07-10-2010 09:45 AM
Splitting a case? jczlsr 4-Stroke Dirt Bike Bike Forums 4 05-05-2008 12:39 PM
RM 250 case splitting acw592 2-Stroke Dirt Bikes - Suzuki 4 10-21-2007 11:00 PM
Splitting the Case 99kx250rules 2-Stroke Dirt Bike Forums 7 02-01-2005 10:40 AM


All times are GMT -6. The time now is 12:02 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright ©2002-2019, JDub Consulting, Inc. All Right Reserved.