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I agree with Mcdroid. My KZ650-C1 has bushings, and they work perfectly fine. HOWEVER, if I had a bike with bearings I wouldn't retrofit bushings.

One thing I noticed in looking at the '82 GPz750 swing arm diagram is that the swing arm has no grease fitting. With bushings a grease fitting is an absolute must. In looking at the horrible condition of your pivot sleeve I wonder what happened. There are oil seals on each end that are suppose to protect the needle bearings, but judging by the wear and pitting on the sleeve it looks like any grease that was originally in there was long gone. Were the bearings dry when you took it apart? Maybe a previous owner got carried away using a pressure washer? Ed

The needles are in the condition you'd expect,mostly a semi greasy mass of not to many intact needles.Yeah bean counters at Kawasaki decided the grease fitting wasn't needed Seals where there,didn't even look to bad.Naturally the sleeve and pivot are NLA The pivot off a 83 GS 750 which I have around about an inch to short,yes it fits right in the sleeve.

So it looks like I'm going to be adding at least a pivot sleeve to my wanted wish list once we get a few other money grabbers out of the way.Not sure about the pivot bolt it's self ,it's so close to threading on .My just get the local dealer give it a try if I can't get it.

Since they where loose I decided to tackle the carbs yesterday.

All stripped down ready for the ultrasonic.

The first carbs I've done in it,never dipping a set of carbs again!There are some differences between these and the BS34's I have on my 85 GS750,mostly better IMO.

84? You mean 34 right? Good luck, you have a long road of de gunking ahead. Get that tank stripped and treated ASAP. Not many of these survived.

Hey man just stopping by to say it's looking great so far! Keep it up!

kzr750r1 wrote: 84? You mean 34 right? Good luck, you have a long road of de gunking ahead. Get that tank stripped and treated ASAP. Not many of these survived.

Yeah it was a typo,34's.I like long roads of degunking.Point taken with the tank,living on the wet coast can do bad (rusty)things.Going to check yours out GA

Other projects,mainly getting my wife's 96 Nissan pickup back on the road,have put the GPz on the back burner.Did order some SS allen's for the carb's from my new favorite SS screw guy ,good prices and very reasonable shipping within Canada

Thanks for the lead on the SS fasteners in Canada! I'll definitely be picking some of those up.

You're welcome,got what was to be my carb screws.Ordered 4mm but needed 5 At his prices it was no big deal.

No eBay APP ID and/or Cert ID defined in Kunena configurationSorry to say this is still waiting to really get started and I missed the weather window for getting the frame painted this year Have run into a bit of a problem with the 4>1,try as I might the megaphone will not release from the header.It's chrome and rusty and will just look out of place on a black and red GPz IMHO.So in looking at getting a new one the alternatives seem to be a black Mac canister system like this or a chrome V&H.As stated I don't want a chrome pipe.What to do :S

Presumably, long term soaking of the joint with Kroil, Liquid Wrench, PB Blaster, 50-50 atf/acetone mixture, or other penetrant has already been tried toward loosening the stuck connection. Such as wrapping a rag around the joint and keeping it constantly soaked for a few days or a week.

Depending on extent of rust, refinishing in black might give very acceptable results.

If stuck position fits the bike, could refinish and use the system without needing to separate the headers from the muffler.

Muriatic acid does a good fast job toward eliminating rust. And there are other good and less dangerous rust removal products also available. Possibly sand blast the hard-to-reach areas at the collection juncture.

If separation is needed to reorient the connection, a muffler shop might be able to help, perhaps by torching the connection to cherry red immediately before attempting to pull it apart -- let them do this for safety reasons because they know how without frying human parts.

Good Fortune!