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Vibrating Exhaust Vibrating Exhaust
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Yamaha Tech Originally the Yamaha XT600 Tech Forum, due to demand it now includes all Yamaha's technical / mechanical / repair / preparation questions.
Photo by George Guille, It's going to be a long 300km... Bolivian Amazon

I haven't been everywhere...
but it's on my list!


Photo by George Guille
It's going to be a long 300km...
Bolivian Amazon



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  #1  
Old 15 Sep 2009
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Vibrating Exhaust
I just changed the exhaust for a Motad Downpipe+Arrow silencer,(xt 600 98) looks like there is a play at the Cylinder, I fitted some exhaust kind of repair paste in between and other aluminiums bits but it does not seems to last long, of course I changed the seal.

So I'm suprised the motad downpipe does not fit actually very well, but does anyone has done a good job fixing the vibration form cylinder/exhaust I would be interested to hear from you

Thanks

gwel
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  #2  
Old 15 Sep 2009
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what you are missing are some exhaust gaskets!
they are made of some kind of aluminum and fit between the header pipes and the cylinder holes.

Vando
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  #3  
Old 16 Sep 2009
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Hey no, I put new gaskets
today I tried to tighten the bolt, and the pin broke into the cyliner it was just so rusty, I expect the other to break too, looks like Iwill have to open the engine to remove the cylinder the problem now is too remove all the 4 rusty bits from the cylinder !!
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Old 16 Sep 2009
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Take your bike to a machine shop! I bet they can heat it up just a bit and take them all off or osmething like that...
Replace the studs for some Yamaha studs... you can also get new nuts.. one pack comes with 5 bolts... at least new nuts came 5...


Vando
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  #5  
Old 16 Sep 2009
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Had this same issue with my XT550....
A propane torch & a good pair of vise-grips did the trick for extracting 'em.
Replaced all 4 with S/S studs during re-assembly....
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  #6  
Old 17 Sep 2009
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Yes heating up sounds like a good idea, shall I drill the broken stud that broke and is now stuck in the cylinder to remove it?
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  #7  
Old 17 Sep 2009
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Use a decent pillar drill, make sure its all square and drill it out starting with a 3mm bit.
Then a 4mm & then a 5mm. You should be able to carefully pick the bits of swarf out, then run a 6mm tap down it (assuming its a 6mm thread, not 8mm?). Take your time!
Good luck
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Old 17 Sep 2009
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Depending on how much is still in the cylinder head, why not weld a nut to the bit, heat the cylinder a bit and unscrew the studs... be careful as they might have reversed thread!

check you workshop manual

Vando
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Old 20 Sep 2009
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yes welding looks like a good idea, i can still drill if that fail i will try that ....thanks for your input.

gwel
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Old 20 Sep 2009
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just be sure to which side the studs come off from the cylinder and most likely you'll get them out..

Vando
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  #11  
Old 20 Sep 2009
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The studs are normal righthand threads..... Welding creates lots of lovely heat - just where you want it & just wot you want to help shift the b*gg*r!
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Old 20 Sep 2009
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That s great i ll do that asap; stiil have to ride 600 km back home thanks again
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Old 21 Sep 2009
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Glad we could help!


Vando
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