| Author | Message | ||
     3reg3 |
I just bought an '03 XB9S. I was trying to give it a little tune-up but as I pulled the rear plug out I found it to be cross-threaded. Can the rear cylinder be re-threaded? What are my options at this point? Any advice would be helpful. Thanks in advance. | ||
| 3reg3 |
After discussing my options with a few mechanics I did the following: 1) Tried to re-tap with 12mm x 1.25 tap. That failed because there was not enough metal to cut groves into. 2) Re-Taped with 14mm x 1.25 (car size) and found plug with similar heat range. Took the bike for a short 6 mile test run around the neighborhood and fix seems to have worked great. | ||
| Reepicheep |
How did you keep debris out of the cylinder? Did you pull the head? Did anyone talk about drilling larger then heli-coiling back to the 12mmx1.25 size? | ||
| 3reg3 |
I coated the cutting teeth of the tap with grease to have most of the shavings stick. I then rigged a small hose to my vacuum and put it into the cylinder and spent about 20 mins just twisting and poking around trying to get any tiny shavings that may have fallen in. Using a heli-coil was definately my first option. The reason I went with the other option was for a couple of reasons. First in order to drill out the rear cylinder I would have had to pull the head out because of space and metal shavings issues. Secondly I am in the understanding that a heli-coil will never be as permanent as good threads. I also spoke to 3 different mechanics who said that as long as the plug fits correctly, (thread length, proper sealing on the head) and has the similar or cooler heat range there should be no issues. |
