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Dirt Bike Brands - Other
Dyno numbers for Thumper DRZ Kits?
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[QUOTE="PeteN, post: 246430, member: 18725"] Rich: Thanks for the comments, increasing the area under the curve and keeping the stock rev limit was my plan. The DRZ hits the rev limiter pretty easily stock, so bringing the curve down a little might help. This seemed to be the cheapest and possibly most reliable to me. Compared to higher compression or higher rpm. I can use the torque to get my large carcass off the turns and I can always gear up for top speed. The Yosh kit is way more $ and the've blown up a few. As far as the sleeving, I'm having a friend with a lot of experience as a pro engine builder do it who I have a lot of confidence in. I've also been following a bunch of people who have installed the Thumper 470 kit and haven't heard of any problems yet. motormike: I haven't had any cooling problems at all, even on tight 1st gear trails. But I live outside Seattle and rarely gets to 80 degrees and mostly it's much cooler, so I'm not too worried about it. I'm also just doing the bore, not any cams, head work, etc., so I don't think it'll be too bad. [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
Dyno numbers for Thumper DRZ Kits?
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