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Re: '83 GPz750-A1 malarkey.
Posted: Fri May 22, 2026 9:33 pm
by KungFooBob
ZRX61 wrote: Fri May 22, 2026 9:31 pm
KungFooBob wrote: Fri May 22, 2026 8:44 pm
After you've tumbled them are you gonna replate them?
I've never tried it, but zinc replating looks doable at home.
No need here in the desert, they won't corrode
I did think that the moment after I posted

Re: '83 GPz750-A1 malarkey.
Posted: Fri May 22, 2026 9:43 pm
by ZRX61
KungFooBob wrote: Fri May 22, 2026 9:33 pm
I did think that the moment after I posted
Case in point.... Z1 gears that have been sat on a shelf in the garage for at least 20 years (I did blow the dust off before taking the pic)
![IMG_20260522_134434305[1].jpg](./download/file.php?id=16240&sid=0e92023479e9b6c93a29652ff633d842)
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Re: '83 GPz750-A1 malarkey.
Posted: Fri May 22, 2026 10:53 pm
by ZRX61
More gubbins arrived...

- IMG_20260522_144603405.jpg (973.88 KiB) Viewed 2044 times
Re: '83 GPz750-A1 malarkey.
Posted: Fri May 22, 2026 10:56 pm
by ZRX61
ZRX61 wrote: Fri May 22, 2026 1:12 am
Shipped:
ZRX61 wrote: Thu May 21, 2026 5:56 pm
Manual(arrived)
Exhaust gaskets(arrived)
Tail/strakes/grab rail
Rear m/c
Side stand mount doodad(arrived)
Footpeg mounts
Brake caliper rebuild kits (3)
Carb rebuild kits (arrived)
Ignitor/pick up coils & plate etc (arrived & fitted)
Ignitor cover gasket (arrived)
Tank bungs (arrived)
Generator cover (arrived)
Fuel cross feeds & O rings (arrived)
Mirrors (arrived).... neither of which went on the GPz750, but the right one went on the GPz11.... so that doesn't really count.
Speedo/tach assembly (arrived)
Re: '83 GPz750-A1 malarkey.
Posted: Sat May 23, 2026 6:17 pm
by ZRX61
Scored another set of carbs for parts from a mate for $20 + shipping, same guy who sold me the clocks for $25.
Re: '83 GPz750-A1 malarkey.
Posted: Sat May 23, 2026 8:31 pm
by ZRX61
Dumped a shit-ton of screws from the carbs in the tumbler this afternoon.
Also dug out my tin of weird drill bits... it has tapered bits for wood screws....

- IMG_20260523_121729209.jpg (3.28 MiB) Viewed 2002 times
and also these three bits which have a spring-loaded doodad that centers the bit when drilling pilot holes for door hinge screws...

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The smaller one is the perfect size & depth for drilling into that buggered air screw on the #1 carb, & I deployed the screw extractors for use after I put a hole right in the middle of the air screw.
Raided the kitchen for this:

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Re: '83 GPz750-A1 malarkey.
Posted: Sat May 23, 2026 10:51 pm
by ZRX61
All set to drill out that buggered air screw now. Got the drill bit shown in the previous post & three different types* of extractor... NONE of which are those fucking E-Z Out mongfoolery.
*including a German #1 Rennsteig extractor.
Re: '83 GPz750-A1 malarkey.
Posted: Sat May 23, 2026 11:29 pm
by ZRX61
Re: '83 GPz750-A1 malarkey.
Posted: Mon May 25, 2026 2:03 am
by ZRX61
FINALLY got the carbs separated. Issue was the choke rod which most online posts state "remove the screws & slide the rod out"...
Problem:
It doesn't have any fucking screws
Solution:
Found a post on KZRider from over a decade ago that mentioned Ping!FuckIts! & even listed the part # (92033-1066) Looked up the parts diagram & found the buggers.

- Choke Rod.JPG (115 KiB) Viewed 1943 times
& once I popped those buggers off I could separate the carbs.

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- IMG_20260524_173719524.jpg (2.37 MiB) Viewed 1943 times
Tomorrow I might even pull the choke plunger assemblies.

Re: '83 GPz750-A1 malarkey.
Posted: Mon May 25, 2026 7:39 pm
by ZRX61
Choke plungers removed, carb bodies back in the ultrasonic.
Re: '83 GPz750-A1 malarkey.
Posted: Mon May 25, 2026 8:25 pm
by ZRX61
...and back out again after an hour. Even managed to get the balls (# 92045)& springs (#22081-A) out of the two carbs that position the choke rod. Balls came out in the tank, springs removed after with a sharp pointy thing (scribe, for you technical types).

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- IMG_20260525_121451263.jpg (3.39 MiB) Viewed 1912 times
Re: '83 GPz750-A1 malarkey.
Posted: Tue May 26, 2026 8:00 pm
by Ian
ZRX61 wrote: Sat May 23, 2026 11:29 pm
Rennsteig for the win!!
.... Then put the Rennsteig in the hole, seated it with a couple of light hammer taps & then just unscrewed the jet.
Can you share a link please? I have some stuck airscrews in my RG
Re: '83 GPz750-A1 malarkey.
Posted: Tue May 26, 2026 9:45 pm
by ZRX61
Ian wrote: Tue May 26, 2026 8:00 pm
Can you share a link please? I have some stuck airscrews in my RG
I got it from Amazon, just punch "Rennsteig extractor" in the search bar. For carbs you want the #1 size. It's a Knipex company. If you don't tap it hard enough to seat it in the hole it will act like a tapered reamer, at which point another clout or two will have it seated enough to grip the brass carb doodad.
I started with a small drill bit, then went to 1/8in. Drilled in about 1/4in.
Re: '83 GPz750-A1 malarkey.
Posted: Tue May 26, 2026 9:47 pm
by ZRX61
Then ran another old screw in to check the threads were ok, they are.
Re: '83 GPz750-A1 malarkey.
Posted: Tue May 26, 2026 11:38 pm
by ZRX61
Re: '83 GPz750-A1 malarkey.
Posted: Wed May 27, 2026 9:01 am
by Rockburner
ZRX61 wrote: Tue May 26, 2026 9:45 pm
Ian wrote: Tue May 26, 2026 8:00 pm
Can you share a link please? I have some stuck airscrews in my RG
I got it from Amazon, just punch "Rennsteig extractor" in the search bar. For carbs you want the #1 size. It's a Knipex company. If you don't tap it hard enough to seat it in the hole it will act like a tapered reamer, at which point another clout or two will have it seated enough to grip the brass carb doodad.
I started with a small drill bit, then went to 1/8in. Drilled in about 1/4in.
Looks like Rennsteig do both types: fluted and threaded :
From Amazon UK :

(
https://www.amazon.co.uk/Rennsteig-471- ... 52ffba15af)

(
https://www.amazon.co.uk/Rennsteig-470- ... 186&sr=8-9)
Looks like the no1 fluted is only a tenner individually:

(
https://www.amazon.co.uk/Rennsteig-9R-4 ... 186&sr=8-8)
I'm thinking I'll just add that kit (top link) to my xmas list.

Re: '83 GPz750-A1 malarkey.
Posted: Thu May 28, 2026 2:04 am
by ZRX61
Another rear m/c showed up. Original (right) has a bolt sheared off in it, may attempt to remove broken bolt at some point...

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Re: '83 GPz750-A1 malarkey.
Posted: Fri May 29, 2026 9:55 pm
by ZRX61
Fired up the soda blaster in the driveway & knocked the paint off the carbs.
JHC!!! It looked like a scene from Scarface be the time I was done. Barely used any soda, but the mess was epic
Got done with that & put everything away, hosed off the driveway etc.. & just when I finished the other set of carbs showed up from Texas.

I thought I was getting a partially stripped set, but they're complete
So the Saturday plan is original carb bodies back in the ultrasonic & pull a couple of parts off the spare set.
and.. I just realized I forgot to soda blast the fucking float bowls. FFS
Not really an issue because other stuff will getting the soda treatment soon enough.
Re: '83 GPz750-A1 malarkey.
Posted: Sat May 30, 2026 2:43 am
by ZRX61
More gubbins showed up...

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Re: '83 GPz750-A1 malarkey.
Posted: Sat May 30, 2026 3:20 am
by ZRX61
Soda'd carbs.

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