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Griso cracked exhaust - weld?

uncle

uncle

Tuned and Synch'ed
Joined
Oct 28, 2008
Messages
89
I've just noticed that my Griso has fallen to the cracked pipe syndrome. I found this crack just in front of the O2 sensor and it looks like an easy weld job. My question is to anyone that had welded theirs (I seem to remember a couple that had) - did it hold up well or has is cracked in a new place?

Just curious....
 
I wouldn't entertain a repair on this tortuous intermediate piece for stock LHS exhaust.
I had the GTRX-RHS exhaust fitted from new on griso 8v, and never looked back, take 1/2 the stuffing out of silencer, and sounds and looks amazing. Only 2*120 degree turn on intermediate piece instead of 4*90 degree that's a stress analysists nightmare, and stock exhaust looks and sounds crap.
 
The bracket sure looks welded onto the pipe. I would assume a repair is possible... I've considered why Guzzi made this bend in the first place. If I were to guess it would be to "tune" the exhaust. Just because it seems to look restrictive doesn't really mean it's not adding a certain back pressure balanced with the airbox. I do know drag pipes make decent horsepower but a good two into one system makes better mid range power. I would attempt a fix or even fabricate a new SS section unless you want to spring for a new pipe without the bend?

vivo
 
I have a Termi installed and I like it - so I went with welding it up for now. I talked with my welder and he thought that maybe the metal is a bit brittle from the welds but also felt that once it finds a 'comfortable' position it may just hold, we'll see I guess. At least I'm up and running and so far so good...


pipe2.jpg
 
How much mileage/time did it take for that to happen?

Joe
 
My bike was at around 9,000 miles before I saw it.
 
As I was changing the oil I just noticed the same crack in the same spot. I am having a hell of a time removing the O2 sensor. Before I torque the shit out of it I thought I'd confirm it spins off counter clockwise.

How is the weld holding up? Any words of advice I should give a potential welder?

Thank you.
 
MarcoRod said:
As I was changing the oil I just noticed the same crack in the same spot. I am having a hell of a time removing the O2 sensor. Before I torque the shit out of it I thought I'd confirm it spins off counter clockwise.

How is the weld holding up? Any words of advice I should give a potential welder?

Thank you.
Click to expand...

Yes, the O2 sensor is standard thread. Treat it carefully, rough handling may cause it to fail. Also coat the threads with anti seize compound before installation.
 
It's been 2000 miles since I had it welded and it's still holding up fine. It's a straight froward stainless steel weld.
 
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