Hi All,
I'm working on the restoration of a T250 and I'm looking for a solution to the stripped outside thread on the cylinder. When I don't use an exhaust gasket I can get a little bit of bite on the thread when attaching the exhausts, but that's not a long term solution.
Perhaps I have been searching using the wrong terminology but I can't find anything in the forums.
Any suggestions?
Thanks
Neil
Cylinder thread damaged
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Cylinder thread damaged
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- AMA Superbike
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Re: Cylinder thread damaged
Man, I don't know. I might take it to a machinist for advice.
If you stroke it more than twice; you're playing with it.
Too many bikes, too much time, ENOUGH SPACE, FINALLY! Never enough money.........
Too many bikes, too much time, ENOUGH SPACE, FINALLY! Never enough money.........
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Re: Cylinder thread damaged
A thread chaser might restore the threads to the point its workable again. A universal tool isn’t too expensive, but I would take the part to a shop that has experience with the tool.
Here is a video: https://www.youtube.com/watch?v=s9tAVV1EfN4
Here is a video: https://www.youtube.com/watch?v=s9tAVV1EfN4
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Suzuki:
GT750 2x75
GT550 72 & 75
GT380 72
T500 69 project & 73 project
T350 69 & 71
Honda 85 CB650SC & 86 CB700SC
09 Triumph Bonneville SE
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Re: Cylinder thread damaged
Aluminium tape round the threads.
Think of how stupid the average person is, then realise that half of them are more stupid than that.
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Re: Cylinder thread damaged
jabcb and Alan good suggestions!
I might try both. Get the thread cleaned up as much a possible, then a bit of tape.
Many thanks
I might try both. Get the thread cleaned up as much a possible, then a bit of tape.
Many thanks
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Re: Cylinder thread damaged
I think its 48x1.5 thread if that fyi helps
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Re: Cylinder thread damaged
njdmoto did aluminium tape work?
I've same problem. '71 T350.
Have talked to 2 machinists experienced with bikes & cars and both said it'd be over a day's labour for them: not economical.
Be glad to hear how you got on
I've same problem. '71 T350.
Have talked to 2 machinists experienced with bikes & cars and both said it'd be over a day's labour for them: not economical.
Be glad to hear how you got on
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Re: Cylinder thread damaged
willdesign,
I have just received the thread chaser, so ill let you know how It all goes.
I have just received the thread chaser, so ill let you know how It all goes.
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Re: Cylinder thread damaged
njdmoto wrote:willdesign,
I have just received the thread chaser, so ill let you know how It all goes.
If it doesn't work...fill the threads with JBWeld and rework the threads. I know it sounds crazy, but I did an experiment once where I drilled out an exhaust stud to 1/2" and filled it with JBWeld. After drying for a couple of days I tapped it to 8mm and put a long bolt into the hole. I tightened the bolt (using a torque wrench) and at 20 ft/lbs the bolt broke off. The threads held...
Lane
If you stroke it more than twice; you're playing with it.
Too many bikes, too much time, ENOUGH SPACE, FINALLY! Never enough money.........
Too many bikes, too much time, ENOUGH SPACE, FINALLY! Never enough money.........