Author Topic: 40mm Carb  (Read 2134 times)

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supermotokx

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40mm Carb
« on: August 29, 2003, 03:01:21 AM »
My local kx shop tells me that some guys drill their 500 carb to 40mm (from the standard 39) which should give better throttle control. I'm not sure if I belive that, but I do know that some guys do it on their 125 to give a little more power. Any of you guys done that?
 
Martin

Rick

  • Guest
40mm Carb
« Reply #1 on: August 29, 2003, 04:23:10 AM »
The only mod I have done to my 500 is to mill the slide slightly.  This added a little snap to off idle response.  I would think that you would need some porting work in order to accomodate opening the carb to 40mm.  

Maybe someone else has experimented with this change.  I'm note sure I would risk the price of a Carb to see if it would work.  In fact, before I shaved my slide, I installed one that had already been modified to ensure I liked the difference, that way I had no risk.  You might want to think about finding someone that has done this mod, and find out if any motor work was done before you hand over your carb to the machinist.

Good luck

Rick