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trailtech gauge and gs450 operating temperature

  • Thread starter Thread starter gk45011
  • Start date Start date
G

gk45011

Guest
Recently purchased the Trailtech vapor gauge. At the same time I started trying to tune in my CV carbs on my GS450. The needle has been shimmed, I went from the stick 40 pilot to a 45, and the mains are all the way up to 135. Per Pete and some others work I think I still have room to go up on the mains since the original was a 115 main.

Does anyone with this gauge and a temp sensor have their average operating temperature? Mine fluctuates between 245 and 280 ish when it is warm and being run hard. I have no idea where to set the warning stages since I do not have an average baseline before starting my tuning.

The bike has K&N oval filters and the fairly open Emgo shorty mufflers. Any information from those more experienced with the GS450 tuning is greatly appreciated.

Gary
 
at plug

at plug

The unit i have monitors at the crush washer of the spark plug.

Gary
 
Cylinder head temp of 280 seems hot to me. Oil starts breaking down rapidly at 250.
As for your 83 450 tuning, welcome to the club. Are you sure 83 had 40 pilots factory? I thought they were 45's for '83, 40's for '82 but I'm also on a phone and can't check easily.
Im on k&n ovals, stock pipes, putting jn a 140 main and 50 pilot soon. I have a dynojet stage 3 kit in the carb 20mm cut off slide springs and vacuum holes drilled out. Main jet is equivilent to a 127.5 mikuni main. Too lean!
K&n states a general 25% increase in jet sizes for mains using pod filters. It'll get you in the ball park!
 
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