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Dirt Bike Discussions By Brand
Honda MX & Off-Road Dirt Bikes
Anyone w/experiences with XR400 Power Up Kit
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[QUOTE="DualSportr, post: 99830, member: 19592"] This is not exactly true. Yes, hardweld camshafts are made from stock cores. The procedure increases the amount of hardface material on the cam lobes by at least 30% over the stock coating, making them less prone to wear than the stock camshaft. The reason other aftermarket cams may wear more quickly is not because of the way they are built, but because most are running much higher lifts. The HRC cam increases duration, but does not increase the lift numbers considerably, thus it is easier on the lobes and rockers. If you run a higher lift aftermarket cam in ANY Honda RFVC engine, hardfaced rockers will reduce or alleviate the wear problem. Performance-wise, the long duration, short lift HRC cam will give more pull on the top with less change at lower rpm. A "normal" high lift/longer duration aftermarket cam for the XR4 will give quicker throttle response off the bottom, plus the top end boost realized with the HRC cam. [/QUOTE]
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Dirt Bike Discussions By Brand
Honda MX & Off-Road Dirt Bikes
Anyone w/experiences with XR400 Power Up Kit
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