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Suzuki MX & Off-Road Dirt Bikes
Can I De-Tune my 03 RM250?
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[QUOTE="placelast, post: 712581, member: 22683"] I was in the same boat when I moved from SoCa and began riding trails of the central coast; wanted something more manageable at lower RPMs as desert riding was a thing of the past, and slower, tighter conditions prevail here. Eric Gorr had previously mildly modded my stock cylinder + head for more power everwhere, and it worked very well for the desert and other go-fast conditions. Therefore I bought an extra cylinder and had him port it for low to mid. I believe his excellent book says (effectively, in this order) lowering the transfer ports, reshaping the head's dome, and perhaps increasing compression will accomplish what you are looking for. (Rich R. will post [i]exactly[i] what the book states any mninute now, to follow!) If it had a tachometer I could be more specific but what his porting did was shift the plateau and "ramp up" to the left, peaking at lower RPM. I'm very pleased with the outcome. Well worth the $ - he knows his stuff. At elevated RPMs it still has more than needed so I'm wondering if a Dynoport pipe and S/A would help shift even more to the left; am musing if someone can confirm their claim - althought I have no reason to doubt, it would make it easier to sell the idea to my wife (gee: what's this shiney new part cost that just came in the mail? Is it really neceessary?)[/i][/i] [/QUOTE]
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Dirt Bike Discussions By Brand
Suzuki MX & Off-Road Dirt Bikes
Can I De-Tune my 03 RM250?
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