Broken Bolt in 2007 CR125 Exhaust Pipe Joint

Anonymous (not verified)
Profile picture for user
Posts
0
Joined
5/10/2021
Anonymous (not verified)
Edited Date/Time 9/28/2013 9:35pm
Just got through replacing the top end on my 2007 CR125. When I was installing the exhaust pipe joint into the cylinder one of the 8mm bolts broke as it was not aligned properly with the other two bolts. First off, how difficult will it be to remove that broken bolt and what specific brand and type of tool would you recommend? Also, can the cylinder be removed without having to take off that exhaust pipe joint, or will the frame be in the way without removing it, thus not allowing the cylinder to come up and off? Thanks for any help.
|
crashnburn11 9/28/2013 9:35pm
9/28/2013 9:35pm Edited Date/Time 9/28/2013 9:37pm
If it is broke off inside. I would use a screw extractor. Centerpunch in the center of the screw, drill a 9/64" hole into the screw (doesn't have to be real deep). Hammer a #1 size screw extractor in (doesn't have to be super hard hammering). The extractor will bite and you should be able to screw it right out, since it isn't seized.

You can get an extractor at any hardware store (lowes, home depot, etc) for a couple bucks.

If there is thread hanging out of the hole still, then clamp a pair of vice grips on that sucker and take it off.

BTW, your bolts are 6mm, they just have an 8mm head.

Alternatively to a screw extractor, you can use a lh drill bit, but those can be more difficult to find.

Post a reply to: Broken Bolt in 2007 CR125 Exhaust Pipe Joint