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About to pull out what little hair I have left

  • Thread starter Thread starter Old guy
  • Start date Start date
Why don't you just do plug chops? That will tell you if you are rich or lean. You are not very likely to get it right by guessing that is for sure.
 
Plug chops are still a guess.

I found a local yard with the lid and filter.

The kidney shaped port at the back of the carb is the vacuum source for the top of the diaphragm. At some point the low pressure moving through the throat of the carb needs help with an increased differential via the top of the diaphragm.

This is why I love fuel injection.
 
mrbill5491 said:
Just FYI, if one uses CARB certified aftermarket components (mostly 4 wheeled vehicles though, not sure there are many CARB approve pieces for bikes), there shouldn't be a problem with any emissions testing.
Click to expand...

CARB must have something to do with bikes, as it was the subject of a Cycle World column a year or so ago (I think it was about aftermarket exhausts).
 
Ok, ditched the air box. Figured if I'm going to be playing the jetting game, might as well run pods.... With a twist.

1 up on the pilot, 2 up on the main, engineered some pods, now it pulls to 8k, mid range is strong, surge is gone, and it sounds GREAT.

I've got some 130 mains, and 1 size down from where I'm at now. That will help me judge the right direction...... I'll be damned if it ends up running right on stock jetting. That would be one of those awesome, cheap, HP mods that other 650s could do. Maybe the 650 is just that different.

Pulled the snorkels out of there air box, pulled the inner retaining rings, picked up some foam material, put this foam to the entrance of the snorkel, pushed the ring in till it was flush, trimmed the foam with a razor, then seated the ring. $2 pods and velocity stacks.

I have pics I'll post.
 
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