GS 1000 G - Stock Jet sizes, Recommended Jet sizes

[Anonymous]

Greetings!

I have a 1980 GS1000G, that came with a Vance and Hines exhaust.

After much cleaning of the carbs, it's now running, albeit rather lean. As seems typical for these bikes, it won't rev over 4k or so without the airbox, although with the airboxes, it revs up to redline with no obvious flatspots. However, the plugs are still showing white, and it's got all of the other symptoms of running lean: Excess heat, Long time for it to drop down to idle, etc.

I doubt the previous owner jetted it, so I'm thinking that I should probably put in a jet kit. Because I've fought with the airbox for the last time, I also want to go to Pod filters.

What are the stock jet sizes. What have others with similar configurations done for their jet sizes?

Thanks in advance!

Rich

[Anonymous]

My 79 1000 had 95 stock jets, bumped them up to 130 with recent carb rebuild. I am running aftermarket Jardine mufflers with stock head pipes, pulls hard and they won't need to be changed again when a header is added.
Not a carb guru but seemed to work well for me. Good Luck

[Anonymous]

Stock main jet size for a GS1000GT (1980) is 115.

[AOD]

this info is from either Dyno-Jet or Vance and Hines reguarding jetting:

i'll skip the part about pre-80 GS1000's...

80-81 GS1000 - Remove the stock airbox lid and increase the main jet to a 125. The pilot jet should be raised to a 42.5

hope this helps,

~Adam

[Anonymous]

The pilot jet should be raised to a 42.5

Ooops, forgot the stock pilot jet size: 40