Gs850g

[Diver]

Hi all again.
will a set of Carbs off a 1984 GS850 suit a 1979 GS850G.
Regards
Chris

[Nessism]

Nope. The '84 carbs are CV type, and your '79 carbs are VM, mechanical slide type. The VM's are smaller diameter, which employ smaller carb boots and smaller head ports.

It may be possible to adapt the larger carb boots onto your head, so you can use the CV carbs, but it's of questionable value.

[Diver]

Thanks for your reply. CV Carbs are already on my 1979 GS850G and I can get a set off a 1984 which look the very same.

[Nessism]

Thanks for your reply. CV Carbs are already on my 1979 GS850G and I can get a set off a 1984 which look the very same.

Hum. Are you sure your 850 is a 1979 model year? If it was build after July or August 1979, it's most likely a 1980 model year bike. If you have an electronic ignition, what will be addition information suggesting it's a 1980.

Anyway, those '84 carbs should be fine.

[Big T]

Does your bike have a Kickstarter?
if yes, 79

[Grimly]

Very possible it's got a later engine.

[Diver]

It is Registered 1979. It had points, however, I installed electronic ignition to it. I can't find any reference numbers on them.

It doesn't have a kick start.

[Diver]

149096 is the Engine Number

[Nessism]

No kickstart = It's NOT a 1979 model year bike. No worry, those CV carbs you found will work. I have O-ring kits if you plan to rebuild them.

[dpep]

Very possible it's got a later engine.

That would explain the CV carbs and lack of a kickstart shaft. But it would have had electronic ignition, not points. That combination did not appear on any model or engine in the U.S. market AFIK. I do not know about Ireland or other markets. .

Perhaps some pictures and provenance would help solve the mystery.

[Diver]

Thanks for all that.

Could you please let me have some information on the "0" Rings as I might decide to overhaul them.

The Frame No is 102736.

[Grimly]

That would explain the CV carbs and lack of a kickstart shaft. But it would have had electronic ignition, not points.

Depending on the source of the engine. Some breakers strip all the easily removeable bits and just sell the bare lump. Could be that's what happened, and the PO re-used his points set-up.

[Nessism]

Thanks for all that.

Could you please let me have some information on the "0" Rings as I might decide to overhaul them.

The Frame No is 102736.

My signature contains links to a carburetor rebuild tutorial, inside of which, you will find a detailed list of the O-ring sizes needed to rebuild a set of Mikuni CV carbs.

My signature also contains a link to how you can purchase an O-ring kit. Buying this way will be cheaper than sourcing the various O-rings in your local market.

[Diver]

Please excuse my ignorance, but how do I open the link you mention.

[Nessism]

Please excuse my ignorance, but how do I open the link you mention.

https://www.thegsresources.com/_foru...ts#post1703182
http://www.thegsresources.com/_forum...d.php?t=171846
https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

You might have to go to your profile, and turn on the option of seeing other peoples signatures.