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Old 10-13-2012, 12:07 AM   #3
Kai Ju
Beastly Adventurer
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Joined: Jul 2009
Location: So Cal
Oddometer: 1,910
VM38s on R100

I'm running VM38s on my '77 R100/7 which is stock down to the stock clamshell airbox and elbows.
Your Q5 sounds like it's way too rich.
Here is what I'm running:

Description Spec
Main Jet 210
Pilot Jet 25
Needle Jet 166 P-8
Jet Needle 6DH3
Slide Cut Away 2
Main Air Jet 0.5
Needle Valve Ass'y 3.3

The engine pulls really strong throughout the revrange, It's a little cold blooded and I'm thinking going up a bit on the pilots to take care of that.
Mixed surface streets and freeway I get 40 mpg which is up from the 35 mpg I got with the Bings.
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