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YZ120
10-30-2006, 05:14 PM
ours seems a little lean.
we are at 500ft above sea level.
it takes a long time to warm up-with choke on before it will run cleanly.

right now jetting is stock!

anyone else having any problems with jetting?

was thinking of going richer on the pilot and main.
i finally found the air screw-(what should it be at?)
what about the needle?
any help would be appreciated.
thanks

317GRFX-John
10-30-2006, 07:26 PM
Having the problem with warming up. Real bad on cold mornings, like this past weekend. Any advise would be great.

YZ120
11-01-2006, 03:21 PM
well i think i`ve solved the cold start problem.
and now i have color in the plug also.

stock pilot is a 15 went to a 17.5
stock main is a 95 went to a 100

now it fires right up with no choke and runs clean all the way to top end.

predator dad
11-02-2006, 02:40 AM
I did the same to mine. It runs excellent now.

Spider 171
11-02-2006, 09:17 AM
Where did you get your jets? Also anyone else noticed a lack of interest in the Typhoon? Nobody seems to be making anything for them. You can have the engine built anywhere but finding parts, is another thing.

tcr0148
11-06-2006, 07:19 AM
you can find most on the parts need for big bore kits at dratv.com or tboltusa.com

WMW-F4R
01-29-2007, 02:34 PM
Mikuni Carb

Pilot: *17.5-20
Main: *102.5-110

*Depending on your location?