'83 GPz750-A1 malarkey.

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KungFooBob
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Re: '83 GPz750-A1 malarkey.

Post 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 :)
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Re: '83 GPz750-A1 malarkey.

Post 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)
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Re: '83 GPz750-A1 malarkey.

Post by ZRX61 »

More gubbins arrived...
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Re: '83 GPz750-A1 malarkey.

Post 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)
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Re: '83 GPz750-A1 malarkey.

Post by ZRX61 »

Scored another set of carbs for parts from a mate for $20 + shipping, same guy who sold me the clocks for $25.
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Re: '83 GPz750-A1 malarkey.

Post 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....
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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.

Post 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.
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Re: '83 GPz750-A1 malarkey.

Post by ZRX61 »

YES!!! Behold the extracting GOD you lowly peasants!! :obscene-birdiedoublered: :obscene-birdiedoublered:

Rennsteig for the win!! :banana-dance:

Started with the self-centering hinge drill doodad to get the hole started, went up to a slightly larger bit & went to town (notice the brass swarf), Then put the Rennsteig in the hole, seated it with a couple of light hammer taps & then just unscrewed the jet. 8-) 8-)
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The Amazon reviews of the German doodad had several people saying "Bought this to successfully remove a stuck jet in a Mikuni".. which I will be adding too.
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Re: '83 GPz750-A1 malarkey.

Post by ZRX61 »

FINALLY got the carbs separated. Issue was the choke rod which most online posts state "remove the screws & slide the rod out"... :eh:

Problem:
It doesn't have any fucking screws :angry-cussingblack:

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. :thumbup:
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& once I popped those buggers off I could separate the carbs.
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Tomorrow I might even pull the choke plunger assemblies. :think:
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Re: '83 GPz750-A1 malarkey.

Post by ZRX61 »

Choke plungers removed, carb bodies back in the ultrasonic.
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Re: '83 GPz750-A1 malarkey.

Post 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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Re: '83 GPz750-A1 malarkey.

Post by Ian »

ZRX61 wrote: Sat May 23, 2026 11:29 pm
Rennsteig for the win!! :banana-dance:
.... Then put the Rennsteig in the hole, seated it with a couple of light hammer taps & then just unscrewed the jet. 8-) 8-)
Can you share a link please? I have some stuck airscrews in my RG
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Re: '83 GPz750-A1 malarkey.

Post 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.
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Re: '83 GPz750-A1 malarkey.

Post by ZRX61 »

Then ran another old screw in to check the threads were ok, they are.
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Re: '83 GPz750-A1 malarkey.

Post by ZRX61 »

Santa dropped by again.... Ya win some, ya lose some...

Brake kits: Win! :thumbup:

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Another tail: Win! (it has some parts attached that I want/need) :thumbup:

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Kickstand: Lose. Ad showed parts that I need attached to it. Fucker didn't send those, didn't need the actual stand. :angry-cussingblack:

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Re: '83 GPz750-A1 malarkey.

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


Image
(https://www.amazon.co.uk/Rennsteig-470- ... 186&sr=8-9)


Looks like the no1 fluted is only a tenner individually:
Image
(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. :)
non quod, sed quomodo
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Re: '83 GPz750-A1 malarkey.

Post 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.

Post by ZRX61 »

Fired up the soda blaster in the driveway & knocked the paint off the carbs. :thumbup:

JHC!!! It looked like a scene from Scarface be the time I was done. Barely used any soda, but the mess was epic :shock:

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. :roll: I thought I was getting a partially stripped set, but they're complete :banana-dance:

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 :angry-cussingblack: :angry-cussingblack: :angry-cussingblack:

Not really an issue because other stuff will getting the soda treatment soon enough.
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Re: '83 GPz750-A1 malarkey.

Post by ZRX61 »

More gubbins showed up...
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Re: '83 GPz750-A1 malarkey.

Post by ZRX61 »

Soda'd carbs.
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