VM29 Fitting to GS1000..

[CockneyRick]

Didn't think it'd be a straight swap to put the VM29s onto the CV34 rubbers. 

VM29: 38-50-38 & 40mm OD Inlet side

CV34: 36-52-36 & 41.5mm OD Inlet side

 

So do i need the earlier VM head rubbers to make them fit, or will a lot of wangling get them on that spacing?

[CockneyRick]

Since learned the VM & CV head spacing on GS1000 is different.

Also that a KZ900/1000 pre 79 rubbers should work.

Ordered a set so we will see???

[gs7_11]

Yes. Far as I'm aware, the VM29s are smaller spaced, like an overbored VM26/28, whereas the VM30s  fit the large port head as on the later 34mm CV carb bikes.

[CockneyRick]

7 hours ago, gs7_11 said:

Yes. Far as I'm aware, the VM29s are smaller spaced, like an overbored VM26/28, whereas the VM30s  fit the large port head as on the later 34mm CV carb bikes.

Every day's a school day  

[Scotia1000]

On 7/5/2020 at 2:03 PM, CockneyRick said:

Since learned the VM & CV head spacing on GS1000 is different.

Also that a KZ900/1000 pre 79 rubbers should work.

Ordered a set so we will see???

Hi, did the kz900/1000 rubbers fit the CV head and vm carbs?

[Rsvfletch]

On 10/9/2022 at 7:30 PM, Scotia1000 said:

Hi, did the kz900/1000 rubbers fit the CV head and vm carbs?

They do fit but you need to slot the mounting holes very slightly if you’re talking Z1000j

Edited October 12, 2022 by Rsvfletch

[Rsvfletch]

Proper VM29 round slides fit onto standard GS slide carb rubbers mate. Z1000j rubbers for anything bigger 

[Scotia1000]

Hi,

Thanks for the reply, I bought a 1980 gs1000, in bits, the guy had made his own intake plates and cut some 34mm rad pipe, but there's not enough on the intake to get a good clamp on for the vm carb, also it looks like the mixture screw has snapped off and it wont push out, so I have an old 1000j set of carbs I was going to try but need to find the rubbers to fit. Can't seem to source any gs1000 cv rubbers that are not over 150 quid. 

[Rsvfletch]

2 minutes ago, Scotia1000 said:

Hi,

Thanks for the reply, I bought a 1980 gs1000, in bits, the guy had made his own intake plates and cut some 34mm rad pipe, but there's not enough on the intake to get a good clamp on for the vm carb, also it looks like the mixture screw has snapped off and it wont push out, so I have an old 1000j set of carbs I was going to try but need to find the rubbers to fit. Can't seem to source any gs1000 cv rubbers that are not over 150 quid. 

You need Z1000j carb rubbers. GRUMPY 1260 usually sell them 

[Scotia1000]

Sorry to confuse the issue, the carbs are off a z1000 ltd 1983, I still have the engine (and thought the engine is the same as a 1000j as I tried the carbs on a 1000j 1982) I tried the them on the 1980 gs1000 but the rubbers seem to block a bit of the intake flow,

Edited October 12, 2022 by Scotia1000