The my left exhaust on my 75 Suzuki GT380 split in half (jaggedly) where the silencer meets the expansion chamber. It can probably be welded, but if it isn't I was considering a three-into-one set up to reduce weight and get some mid-range power. Omar's DTR has one for $565. What says the board?
If it's aftermarket sheetmetal chamber TIG the crack and/ or add a doubler... unless yur itchin' to spend money for new exhaust.
my .02
In reply to fasted58:
I was thinking along your lines. It is aftermarket. My only concern was a repeat performance.
Brought the pipe to a welder to whom I was referred. He examined the pipe with me there and showed me where a PO had the pipe repaired once before by brazing. It was along the brazing that it cracked. It will have to be re-brazed. I just some new high-strength rod in. I volunteered to be the guinea pig. I am going to have to try to rig another hanger further aft (in addition to the existing hanger. There is too much silencer weight aft of the existing hanger.
^This^
Once brass is in the mix, TIG is off the table.
Braze properly, and make new silencer hangers that actually work, you'll be good.
Also, for cool 2-stroke stuff check out HVC Cycles if you haven't. They've got it all.
In reply to motomoron:
Welder melted off the brass, cleaned up the pipe and TIGed it beautifully. I will post a pic. I found this guy because he started advertising in my wife's local magazine. He was reasonable too. Charged $75 for removing the old brass, cleaning up the pipe and doing a very good TIG job. If anyone needs a welder in NE PA, I can recommend one.
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