The “endless loop” means that the chain has been riveted together and that in order to get a new endless-loop on you need to take the swing arm off. The old chain you can just as well just grind off.

Taking the swing arm off is probably not a bad idea, as the swing arm bearings and the pivot bolt can need a little bit of CLT and grease, so it don’t rust and get seized.

Unfortunately the air-cooled Gpz750 83-89 (ZX750A1-A5) came with an original 5~6mm offset front sprocket and they were only manufactured in the original 15 tooth configuration.

That sprocket can still be had at JT Sprockets for instance,
www.jtsprockets.com/catalogue/model/1149

Front: JTF514 15 tooth, 630 chain with the 13, 25 filament.
Rear: JTR501 38 tooth.

You can play around with your rear sprocket, but up front you are stuck, if you don’t buy the more exclusive custom made offset sprockets, but I don’t think it’s worth it, unless you are going for a fatter rear wheel.

So your options are to go up at the rear getting higher top speed or go down and gain acceleration.

/A

One thing I'm not liking is the rear swingarm how far the top of the duel shocks stick out from frame .when aligned with the arm.
Thinking of staying the the gsxr mono shock. I like that look much better.
Clean

Yeah that might work Ed but not right now.This will have to wait a bit as I have things that need to get done here first.

Well that idea hit the bin,the piece I thought was the right size is oversize both ways :S .I have bushings from the GS750 arms to,the right ID but the walls look to be 1mm bigger :dry: I got a guy who could weld it up at work but nobody I know has a lathe.Well at least not in the Victoria area

Since the tube is contacting directly with the needle bearings it's important that it be smooth, round, and hard. You can weld the surface and grind to assure roundness, but it will be soft, not hard, thereafter.

YOu may want tocheck is your swing arms carries 2 or 4 bearings. Mine has 4 (2 each side).

No the original sleeve has been grooved by the destroyed needle bearings so it's not a usable piece looks like the kit from England is my only option :dry:

larriken wrote: I had a set of GSXR ones on the shelf and they fit spot on. Bolted them up and you would not believe it but the spacing for the disc rotors was perfect. I don't think that has ever happened before when I have put together mismatched parts!!

larriken wrote: Funny thing is I found a spacer from god knows what that was perfect fit and size for the right side of the swingarm. Seriously, it was the exact specs for what I needed!

This machine was meant to be

I'd pass on that piece of tube. It's not ground for roundness like the OEM part. Using it will destroy the bearings in short order.

Mark,

Just sold the track bike. Now the Guzzi will get some laps at Laguna.... oh yeah. You did not think the Guzzi would just sit around did you?

So need to talk you into a day at Laguna. You need a track day photo of the KZ driving down the corkscrew.