Should I do a CV Carb slide drill mod?

dh · 10-29-2016, 12:18 PM

I ordered a jet kit for my XF250 that came with a drill bit and instructions to enlarge the hole in the carb slide. The carburetor is a Teikei MV30, nearly identical to the one used on the Zongshen Sierra 200 and Yamaha TW200 models(MV28 I believe).

Has anyone done this and if so what was your experience? I have read that this is a popular mod on Harley CV carbs, but haven't seen much about this topic here. Thanks!

Update: After looking at a few KLR forums on this mod I drilled the slide and cut the needle spring a tad. I also put in a bigger pilot jet that came in the kit.

The bike still starts up ok, and idles ok. I do notice quicker throttle response and more power around the 3k-4k rpm range.

10-29-2016, 12:18 PM	#1
dh Join Date: Jun 2014 Location: NW Arkansas Posts: 453	Should I do a CV Carb slide drill mod? I ordered a jet kit for my XF250 that came with a drill bit and instructions to enlarge the hole in the carb slide. The carburetor is a Teikei MV30, nearly identical to the one used on the Zongshen Sierra 200 and Yamaha TW200 models(MV28 I believe). Has anyone done this and if so what was your experience? I have read that this is a popular mod on Harley CV carbs, but haven't seen much about this topic here. Thanks! Update: After looking at a few KLR forums on this mod I drilled the slide and cut the needle spring a tad. I also put in a bigger pilot jet that came in the kit. The bike still starts up ok, and idles ok. I do notice quicker throttle response and more power around the 3k-4k rpm range. __________________ 2013 SSR XF-250 Last edited by dh; 10-29-2016 at 03:10 PM. Reason: Update
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