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Dirt Bike Brands - Other
Help taming the 300's power delivery
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[QUOTE="Douglas, post: 268679, member: 20753"] Tex, I hesitate to give this reply because it may entail a new pipe! I recently started riding an '01 300 EXC, and I've been riding 4 strokes almost exclusively for the past 5 years. The first day (4 rides ago) we went to one of our most challenging test areas, that requires both tractability and major horsepower, to set up the 300. My gearing is 13/50. I took the stock pipe, a Fatty, and an SST. I rode and jetted with all three.........finally deciding on the SST, mostly for the reasons you are asking about. The SST gives a very linear delivery, and smooths out the abrupt delivery of the stock set up but will still lug down and pull, with a lot more mid, and way more top. Over the past few rides, I have been experimenting with the power valve setting...........I like the power valve screw backed off (Counter clockwise) to open sooner, with this set up. My jetting @ 4,000 ft. is 45p, 172m, #7 slide, NOZH #3, 1.5 A/S. We went riding yesterday, and my buddies with 2002 CR 250's and YZ 250's were way impressed with the 300 motor, actually expressing preference for it's linear power band, and saying it is totally different from our other (2) buddies 300's, and way better! Actually one of the 300 riders has bought the SST even though he had just purchased a "Gnarly", he liked the SST power way better. This is not intended to be an ad for the SST, it just works like you have said you want it to. [/QUOTE]
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Dirt Bike Brands - Other
Help taming the 300's power delivery
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