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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
YZ250F Red Hot Pipe
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[QUOTE="BSWIFT, post: 1239320, member: 16802"] Normal. These titanium exhausts heat rapidly and without airflow across them they will glow red. As stated, check your valve clearances and do it regularly after that. On a side note, Scorpa is using a variant of this engine in their SY250F. Trials bikes have much smaller radiators and it has been a problem. Even using a fan on the radiators, the SY250F runs hot. I'm not suggesting that your 250F is running hot but it IS a racing engine and designed to be run hard, keeping the air moving over the head pipe and radiators. When riding this bike in slow conditions I would advise you to keep an eye on your coolant level. Use proper care when checking but don't be overly concerned if it pukes out the overflow now and again, just get some air moving across the radiators or shut the bike off for a while. [/QUOTE]
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Forums
Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
YZ250F Red Hot Pipe
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