• Required reading for all forum users!!!

    Welcome!
    Register to access the full functionality of the GSResources forum. Until you register and activate your account you will not have full forum access, nor will you be able to post or reply to messages.

    A note to new registrants...
    All new forum registrations must be activated via email before you have full access to the forum.

    A Special Note about Email accounts!
    DO NOT SIGN UP USING hotmail, outlook, gmx, sbcglobal, att, bellsouth or email.com. They delete our forum signup emails.

    A note to old forum members...
    I receive numerous requests from people who can no longer log in because their accounts were deleted. As mentioned in the forum FAQ, user accounts are deleted if you haven't logged in for the past 6 months. If you can't log in, then create a new forum account. If you don't get an error message, then check your email account for an activation message. If you get a message stating that the email address is already in use, then your account still exists so follow the instructions in the forum FAQ for resetting your password.

    Have you forgotten your password or have a new email address? Then read the forum FAQ for details on how to reset it.

    Any email requests for "can't log in anymore" problems or "lost my password" problems will be deleted. Read the forum FAQ and follow the instructions there - that's what we have one for...

  • Returning Visitors

    If you are a returning visitor who never received your confirmation email, then odds are your email provider is blockinig emails from our server. The only thing that can be done to get around this is you will have to try creating another forum account using an email address from another domain.

    If you are a returning visitor to the forum and can't log in using your old forum name and password but used to be able to then chances are your account is deleted. Purges of the databases are done regularly. You will have to create a new forum account and you should be all set.

A bit over my head, swing arm swap.

  • Thread starter Thread starter Guest
  • Start date Start date
G

Guest

Guest
Aye, think I may have bitten off more then I can chew on this swing arm swap. I'm currently attempting to swap out my steel tube swing arm on my 80 GS750E for a the alloy swing arm off a 80 GS110E. Problem is and I was informed of this, the pivot bolt is larger the the 750's. So the bushings in the frame have to be enlarged to fit the larger 1100 pivot bolt. Well it didn't work like I thought. It was suggested that I just drill them out. I did and it didn't work. The hard steel bushings actually bent the bit in the process and things got messed up. So, has anyone else out there tried this swap yet?? If so what did you need to do? :?:
 
Why not make measurements and make some phone calls to your local machine shops for the correct size spacer and then buy the correctly sized bearings?
 
I believe you need to use the original 750 shaft and make custom bushings
 
Uhh..you actually need to drill the FRAME bosses. And you need a bit and drill capable of doing this as well as being damn careful that when you do it it's dead nuts straight from one side to the other or the frame is trash.
The safer way to go is to have bushes machined for the swingarm bearings that have a smaller ID for the 750 pivot. I hope you haven't ruined your frame...
 
What TCK said. You may even be able to utilize your bushings in the new swingarm. I was going to use a '93 GSX-R banana swingarm on my 700 at one time until I got my hands on a Works shock. I would have been able to have my stock bushings shortened to fit the new swingarm and use the stock pivot shaft. I was going to have to take a little off the inside of the frame to squeeze the swingarm in.
 
Ugh. okay I'm trouble then. I did drill out the frame bushings and messed up. So I gotta fix it now. One machinist said he could fix it though I would have to take the engine out of the frame so he could rig up the frame in his cnc machine. I bought an extra set of the inner bushings that ride on the swing arm bearings. They are the exact same length and width of the frame bushings. He is thinking of machining the frame bushings out and then install the other bushings and weld them in. The swing arm and all that is still off and all I would have to do is take off the fork and take out the motor. He quoted me a cost of about $200.

As for the swing arm it is fine, all the measurements on it are exactly the same as the steel tube swing arm, so not messing with it at all. Already installed new bearings, races, and new shock mount bushings. Just gotta fix my f**k up. I'm going to post a couple of pics.
 
Last edited:
I did this mod and got lucky. The drilling wasn't balls-on but damn close.

Your fix sounds good and should work. Good Luck!

Note to others: Find a machine shop to make new bushings - drilling the frame is risky unless you use some expensive drill gear.
 
allojohn said:
- drilling the frame is risky unless you use some expensive drill gear.
Click to expand...

I bought a $70 1/2 drill and a $15 bit...was that good lol.

I have a couple other options yet to research. I know this awesome welder who works magic with metal, he wants to see it as well. He thinks he maybe able to plasma torch the old bushing out and go from there.
 
You'll want to be careful with welding to the extent that this is going to require and make sure the guy who's doing the welding understands what he's dealin with. Especially in an area that is geometrically sensitive such as the area you're working in, heating can tweak the frame enough to pull it out of square. Honestly I'd be inclined to perhaps pay a little extra and have the guy fabricate a simple jig to make sure it stays straight.
 
Okay, think I've found the best way to deal with my frame swing arm bushings mess up...probably the easiest solution as well. Just get a titled straight frame from a 80-81 GS1100E or GS750E and swap everything over. No screwing with the frame bushings. Maybe some sanding and paint to clean it up, sure beats what I may have to do lol.
 
You must log in or register to reply here.
Back
Top