Mikuni 29mm carbs from KZ1000 on GS1000

[OhioGS1000L]

Well, today I bought a GS550 engine to tear down and learn about before rebuilding by '79 GS1000 into an 1100 using the Wiseco kit. The guy I bought the engine from had a shed full of parts, including about a dozen carbs, and said his set of 29mm Mikunis taken from a KZ1000 would be a great replacement for the stock VM26. So, I bought them for a whopping $20 thinking what the hell.

The new carbs are really similar to what is on my GS. The choke on the clutch side rather than in the middle. It has an accelerator pump on the bottom of #2. The pods diameter is identical.

So, did I waste $20 on a gamble, or will the KZ1000 carbs bolt on the GS1000?

Also, where do I measure to verify that these are really 29mm?

Yes I'm a rookie. Thanks.

[chuck hahn]

in either case if they fit or not, your 20.00 carbs are worth at least 250.00 o rway higher if you get the right guy that really wants them..measure the inside diameter on the engine side and that will tell the size.

[TeamDar]

I think you got a set of 28mm pumpers.

[chef1366]

Yup, the 29s don't have a pump.

[Big T]

I think you got a set of 28mm pumpers.

Exactly

Very nice upgrade, or a valuable asset

I'd sodablast them, clean and replace the rubber bits

I'll give you $21 for them

[chuck hahn]

21.25.......

[chef1366]

C'mon guys

[chuck hahn]

WHAT!!! WHAT DID WE DO???????? Just beat you to the punch!!!!! LOL

[blowerbike]

C'mon guys

bill,
where did you get the jack me smiley???
thats cool as hell...fits this topic perfect

[OhioGS1000L]

exactly

very nice upgrade, or a valuable asset

i'd sodablast them, clean and replace the rubber bits

i'll give you $21 for them

lmao...........

[OhioGS1000L]

Exactly

Very nice upgrade, or a valuable asset

I'd sodablast them, clean and replace the rubber bits

I'll give you $21 for them

So will they work, and if so should I disconnect the pump? C'mon. Little help for the new guy

[Nessism]

So will they work, and if so should I disconnect the pump? C'mon. Little help for the new guy

I'd use the pump but before even attempting to install those carbs they should be fully torn down, cleaned, and replace all the O-rings inside. Cycleorings.com may have a kit that will work otherwise you will have to scramble some but finding O-rings isn't that hard.

[jeff.saunders]

While fairly rare, there were sets of VM29's sold with an accelerator pump. Plus there was a Mikuni add-on kit to install an accelerator pump on VM29's.

All those fatory fitted sets had the 17mm hex head drain plug on the float bowls.

[Big T]

So will they work, and if so should I disconnect the pump? C'mon. Little help for the new guy

Yes, they will work

Leave the pump connected

Clean them up like any other VM, I don't know if the O rings are different than the 26s

[OhioGS1000L]

Yes, they will work

Leave the pump connected

Clean them up like any other VM, I don't know if the O rings are different than the 26s

I think they are 28mm. Calipers read between 28.3 and 28.7, they came off of a KZ1000A, and I found a couple online posts about that model having a 28mm pumper.

Probably going to be a nighmare to set up properly.