Exhaust port thread repair

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Dzldanz

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Another 750 Norton Commando exhaust port repair done. Shipping out today
Done here in Ottawa, Ontario, Canada.
dzldanz@gmail.com
 
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U can use google drive etc for pix, then drop the link here. Membership here is another way
 
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With rigidly-mounted exhaust pipes, you have got to shag the threads in the head. Slip-joints and springs are a better way to go. Clamping the exhaust pipe to a theaded stub in the head, when the motor moves and the other end of the pipe is not free to move, is silly stuff. A slip joint with springs allows the pipe to rotate on the stub.
 
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acotrel said:
With rigidly-mounted exhaust pipes, you have got to shag the threads in the head. Slip-joints and springs are a better way to go. Clamping the exhaust pipe to a theaded stub in the head, when the motor moves and the other end of the pipe is not free to move, is silly stuff. A slip joint with springs allows the pipe to rotate on the stub.
Click to expand...
Al my exhaust pipes are rigidly mounted with my 850 Featherbed for over 43+ years now with the stock threated rose and one hanger bolt of each muffler, have never had a rose come lose in all that time and have only ever lost one nut off the bolt on the muffler hanger on the left side, didn't even lose the bolt, my motor is solid mounted so no movement at all, but my motor is balanced for the solid mounts, it takes me only a minute or 2 too remove each header and muffler together when I need too, my header pipes were made back in 1982 for $20 for both and another $20 to get them chromed, aaaah the good old days, took my exhaust man just over 30 minute to bend them up to fit my motor and frame all tucked in, no one has a mandle bender these days as they take up too much space in the workshop, Ian Toy who made then did it all by eye, he was good to watch.
They are showing their age now but still hanging in there.

Ashley
 
ashman said:
Al my exhaust pipes are rigidly mounted with my 850 Featherbed for over 43+ years now with the stock threated rose and one hanger bolt of each muffler, have never had a rose come lose in all that time and have only ever lost one nut off the bolt on the muffler hanger on the left side, didn't even lose the bolt, my motor is solid mounted so no movement at all, but my motor is balanced for the solid mounts, it takes me only a minute or 2 too remove each header and muffler together when I need too, my header pipes were made back in 1982 for $20 for both and another $20 to get them chromed, aaaah the good old days, took my exhaust man just over 30 minute to bend them up to fit my motor and frame all tucked in, no one has a mandle bender these days as they take up too much space in the workshop, Ian Toy who made then did it all by eye, he was good to watch.
They are showing their age now but still hanging in there.

Ashley
Click to expand...

Ash
stop answering to him. You will do the website a big favour.
 
Dan did mine a few weeks ago. First class job, fast turn around, and the exchange rate from US to Canadian $ makes it a great deal. Just make sure you fill out the customs form properly when shipping. It's really nice to be able to tighten the rose nuts up without worrying about going a bit too far.
 
On a commando the hanger plate for the exhaust is also hung on a pair of the same rubber isolatic mounts as the headsteady, so the exhaust can move a little and doesn't strip the exhaust ports or break the flange on the exhaust pipe...

My 50 year old pipes are ugly but still going fine. When I changed them out to the new ones from AN last summer, the thin new one's broke at the flange after a few rides. They were bronze brazed or some special type of weld or brazing and my welder charged me extra to fix it. It broke in the same spot a few rides later, so I gave up on the gleaming chrome look, and put the ugly old pipes back on...
 
CanukNortonNut said:
Ash
stop answering to him. You will do the website a big favour.
Click to expand...
We all get old and Al has nothing better too do, he hasn't been on a bike for so long except to dream about the old days when he use to race or what ever he did, he just living on memory now, but it amuses me with some of the things he comes out with, I just hope I am still riding when I am 105 lol instead of talking about when.

Ashley
 

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