Haven't posted in quite a while...haven't had much time to work on the bike, but I'm getting close to mounting the GS swingarm. I decided to polish it and have replaced the shock bushings, bearings, spacers and even the end caps. Should be like new.

I tried to mount it in the fame tonight and I was surprised to see that I'm going to need 10mm to 11mm of spacers on the pivot axle. I thought it was much less from what I had read but that isn't the case with mine. I'm also disappointed to see that I'm going to need to modify my rear brake pedal and my inner fender. I though this was an easy bolt-on mod....guess nothing ever is, really.
Before pic of swingarm:

After pic:

Headlight Shell painted and ready, had to buy a replacement since it had the fairing on it:

Took apart the GS shocks, replaced the rubber bumper that had fallen apart and repainted / cleaned:

Puffin wrote: The GSXR750 arm is 52,5cm long, forward adjuster position, i do not have a pivot measure but could take one on Sunday. Are you measuring with the dust caps in place ?

Hard metal to hard metal. If the dust caps contain washers then yes please include them. Thanks!

The GSXR750 arm is 52,5cm long, forward adjuster position, i do not have a pivot measure but could take one on Sunday. Are you measuring with the dust caps in place ?

Gave up on the GPZ750 arm when I couldn't find a chain guard for them. Figured I'd keep looking. Right now I'm waiting back for length on a GSRX750 arm and for the ZRX1100 arm.

Edited the first post to have the useful information in it.

Stazi,
Sounds like you miss the place, and as for bike gangs, anyone bar the ladies knitting club meeting on scooters is considered a bikie gang and can be arrested on the spot. Knowing our cops kids on tricycles aren't safe BUT its ok because they are the LAW.
You are right about the Harley numbers in Perth theres thousands of these things.
When the clubs go over from the east, the copers out numbered the riders.
Anyway Ride safe

The oil cooled Gsxr swingarms can be made to fit quite easily and the 750's arm won't lengthen the bike too much if at all. If you want to keep the twin shocks then it'll just be a matter of welding on some shock mounts which I believe Z1Enterprises can get.

Later, Doug

Here is a list of swingarm pivot to axle lengths for swing arm swaps that people may be considering. I collected these for my KZ650 but the lengths are still useful for others.

Swingarms axle to pivot distances / Pivot mount width / Hub mount width
ZR550 - 20.5" / 9"
ZX636 (2003) - 22" /
ZR750 (2000) - 21" /
GPZ750 - 20.5" /
ZX600 (1986) - 20" / 9.125"
GSRX750 (1990) - 20.7" (in the forward axle position) / ?
ZRX1100 (1999) 20.7"/9,25" (width not confirmed)
GS1100 21.25" (not confirmed) / 8.6875" / 10.25"
CB1000 (1994). 23" / 11" /

Any others that I've missed that are common for swapping in on the KZ's?

On another forum I'm a member of they have a winter build-off that runs from Nov 1st to May 25th. I thought maybe I should enter it so I thought I'd have a better chance of winning if I did something a little different. I had originally bought this bike to flip but I'm going to sell my Gsxr and focus on this one as a play toy. It's a '83 Gpz750 that I picked up cheap from a kid who needed money for a car. The bike didn't run, had a title issue, and was sitting outside in the rain when I picked it up.



The starter motor was fried so I picked up a used one from a newer Zr7 only to find out the carbs were full of crud and some jelly looking stuff. So I'm in the process of cleaning them. I'm waiting on some parts and then I'll try to button them up.




When I picked up the bike I did a quick once over for what it needed. First thing was a front tire as it was dry-rotted and leaking, The next obvious items that needed replaced was the sprocket and chain. The rear sprocket was missing almost half of its teeth. :blink:


So I did what any normal person would do, I started browsing Craig'sList and found this.


After a few hours in the garage last weekend, I removed the swingarm and linkage.



A little grinding and massaging I ended up with this.





Just for fun I threw the 19T 5/8" offset 530 sprocket from my 900 build on to check the chain run. (The chain is the old VFR chain so it's junk which is why it has a curve to it.


Next up I made a jig to properly locate the suspension pick-up points from the VFR frame.


The shock ran into the original shock mount so I started de-tabbing the frame.




And the VFR shock roughly located with the jig.


Now, I'm waiting on material to make the swingarm pivot spacers and upper shock mounts. I still need to de-tab the lower cross member before I can start on the lower mounts.

Later, Doug

Looks like a great project spdygon I think it would be a good idea to start a Build Thread in the "Projects" area


To fit the GSXR swingarm is straight forward enough and can be done with Suzuki parts. If the swingarm bushes are in good condition all you need is two bearing bushes and Dust caps from a GS750 1000 GSX etc you can then use your KZ swingarm spindle If you have any lateral play use shims under the Dust caps

spdygon wrote: Doug......just view your post on the kx900. I did not see what it take to install the swingarm. Was it a direct fit...did you have to shave one side to line up the spockets or wheel. my is a 93 I think it was the first year there were watercooled so maybe motor was different then the 92 aircooled.
Thx for your help

The '92 swingarm is just slightly narrower than the 900 frame. The '93 should be the same width as the '92. I put a '94 Gsxr750W arm in my '89 Gsxr750 so the Gsxr swingarms of that era are all pretty swappable. I used pivot inner races from a '87 Gsxr750 in my '92 arm to fit the Kz frame. The pivot bearings are the same, so the races OD are similar but the earlier Gsxr use a 15mm axle (same as the Kz's). I can't remember what the bearing size is for the '93.

I have not dealt with the wheel yet. I'm going with a 6" Hayabusa rim so I opened up a real can of worms for myself. You have a 5.5" rim so you'll probably have to grab a 5/8" offset from sprocket and see how the rear sprocket lines up.

I'll try to help you as much as I can, but unfortunately I haven't conquered all the hurdles myself.

Later, Doug