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Dirt Bike Brands - Other
xr250 broken header pipe bolt
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[QUOTE="Ol'89r, post: 1236563, member: 17212"] That reason would be, the design of the pipe where it meets the exhaust port and the flange. The pipe has a flange on the end that squeezes a soft copper ring against the exhaust port. That flange is held on by another flange that goes around the end of the pipe. The flange on the pipe does not meet the head surface so, there is a little gap between the flange and the head. This produces a small amount of movement between the pipe and the head. A stud is designed to screw into the head and bottom out solidly. Then a flange nut or locking nut holds the pipe flange on. This allows the pipe to move a little bit without coming loose at the port. If you were to use a regular bolt instead of the proper stud, it would eventually wallow out the aluminum threads in the head and become loose. Reason # 2. If I were to be looking to buy a used bike and I saw one that had non OEM hardware on it, I would pass. That would tell me that the owner didn't know enough or care enough about the bike to use the proper hardware. If you were able to use vice-grips to remove your stud, you were lucky. Most of them are very tight or galled from the heat and require heat and shocking to remove. Thanks for the back-up Patty. :cool: Now go put some pants on. ;) [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
xr250 broken header pipe bolt
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