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

[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.

[Big T]

What do your spark plugs look like?

That's what you need to check

You're in Victoria? Ask Rob

[TeamDar]

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

[BC_Rob]

For anyone considering a similar mod, 107.5's (two main jet sizes up) and needle raised one notch is the ticket!