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Gs850 bogging down

  • Thread starter Thread starter ninjadave7
  • Start date Start date
If you're at .03 mm and the shim will spin in the bucket, that indicates you have at least some clearance and going down one size should suffice. Maybe the Unifilter in the stock airbox flows more than the OEM filter which could necessitate jet tweaking.
 
brilliant, I had no idea that there was a shim club, what a good idea! 1948man, I couldn't get the .003 in-between, but i'll try spinning the shim and see what happens. Hopefully the air filter isn't the problem, I have no idea how to really tweak the jets properly... although I suppose that's what this forum is for. I'll have the bike apart again soon and then I'm sure I'll be back for more info!
 
You really should go to your local auto parts store or hardware store and buy a set of feeler gauges either in metric sizes, or in English that go down to 1 mil. I think the set I bought to do this cost about $6. 0.003in is about .076mm, which is toward the upper end of your clearance.

While you're at the store buying new toys, a micrometer is a very handy thing to have when doing shims as well. Start playing around measuring shims and you'll gain a new perspective on manufacturing tolerances, even for precision parts such as these. Good luck!
 
IIRC I got my metric feeler gauges at Napa. The SAE converted to metric was just not accurate enough, and feeler gauges in the correct metric system were inexpensive.
 
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