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Recommendations for 1979 GS850G VM carbs + V&H + K&N

  • Thread starter Thread starter BC_Rob
  • Start date Start date
B

BC_Rob

Guest
Hi.
I'm looking for recommendations for my 1979 GS850G VM carbs + V&H + K&N filter inside stock airbox. Currently have main jets one size up (105) from stock 102.5s. Also have stock pilotjets - 15s
Not really bogging, but the motor just doesn't pull as well as my first GS850G.
 
What do your spark plugs look like?

That's what you need to check

You're in Victoria? Ask Rob
 
The Vance and Hines instructions that come with the exhaust gives a pretty good starting point for jetting. They don't have a recommendations for the 79 GS850. However the 77-79 GS750 should run a 115 main and a 17.5 pilot. That should be real close. I would try a 120 main and try raising the needle one notch.(clip down) Dar
 
For anyone considering a similar mod, 107.5's (two main jet sizes up) and needle raised one notch is the ticket!
 
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