Exhaust nut |
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el__burro
Senior Member Joined: 04 Aug 2018 Location: London UK Status: Offline Points: 423 |
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Posted: 13 Sep 2019 at 16:18 |
Hello, im trying to install the exhaust nut i received from Stein dinse for my v7 850 gt.
It looks very different from the old one and its made of 2 pieces. Is this the right one? Thanks El__burro
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el__burro
Senior Member Joined: 04 Aug 2018 Location: London UK Status: Offline Points: 423 |
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This is the way it looks..
Edited by el__burro - 13 Sep 2019 at 16:30 |
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el__burro
Senior Member Joined: 04 Aug 2018 Location: London UK Status: Offline Points: 423 |
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The other side (the old nut)
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Dave P.
Senior Member Joined: 12 Jan 2015 Location: Northants Status: Offline Points: 5573 |
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The thin ring nut is there to lock the large exhaust nut in place.The original nut is notorious for coming loose and wrecking the threads in the exhaust port,as I know to my cost,
Excuse me for saying so but it looks to me as though your new nut could go further into the head. Edited by Dave P. - 13 Sep 2019 at 16:53 |
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TO LIVE OUTSIDE THE LAW YOU MUST BE HONEST.
1971 V7 Special. 1972 850GT. 1970 T120 Bonnie. 2009 500 Bullet. |
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el__burro
Senior Member Joined: 04 Aug 2018 Location: London UK Status: Offline Points: 423 |
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Thanks, once i have confirmation I can screw it tighter.
i have used some antisieze and new crush washer.
Thanks El__burro |
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el__burro
Senior Member Joined: 04 Aug 2018 Location: London UK Status: Offline Points: 423 |
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After more than a year I have realized that the downpipe on the new nut is loose, it moves forward a bit and more worryngly it looses fumes.
I couldn't find a proper guide on how to install it and very probably I have made some mistakes. Does anyone have a "how to" tip? Thanks el__burro
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Dave P.
Senior Member Joined: 12 Jan 2015 Location: Northants Status: Offline Points: 5573 |
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I periodically tighten the exhaust nuts on my Loops. I can often get a few degrees rotation on them. You could replace the gasket ring then check for tightness several times over the next few hundred miles having first undone the lock nut.When re tightening it does no harm to slacken the other exhaust mounting hardware to allow the pipe to move in if only a fraction.And if possible tighten up when the head is hot!
Edited by Dave P. - 25 Oct 2020 at 13:54 |
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TO LIVE OUTSIDE THE LAW YOU MUST BE HONEST.
1971 V7 Special. 1972 850GT. 1970 T120 Bonnie. 2009 500 Bullet. |
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Brian UK
Moderator Group Joined: 13 May 2014 Location: Surrey Status: Offline Points: 17641 |
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Exactly the same as the old Norton twin exhaust, and that had to be tightened periodically.
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Brian.
Better 5 minutes late in this world than years early in the next. |
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Loopian
Senior Member Joined: 03 Sep 2015 Location: Brighton Status: Offline Points: 202 |
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Its also worth getting right in and having a good poke about in cylinder head exhaust port just to make sure their are no old copper gaskets stuck in there.
Cheers Ian
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el__burro
Senior Member Joined: 04 Aug 2018 Location: London UK Status: Offline Points: 423 |
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The 2 nuts are tighten, i am not sure where the crush washers go.
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johnno
Senior Member Joined: 19 Jul 2014 Location: loughborough uk Status: Offline Points: 5582 |
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1100 sport corsa , Yam R1, guzzi 650tt rider
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Dave P.
Senior Member Joined: 12 Jan 2015 Location: Northants Status: Offline Points: 5573 |
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The washer goes over the end of the pipe up against the flange and is then trapped between flange and the inside of the exhaust port. Or put in the washer first then push the pipe in followed by the nut. Do up the nut tightly then screw the locknut against the cylinder head.
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TO LIVE OUTSIDE THE LAW YOU MUST BE HONEST.
1971 V7 Special. 1972 850GT. 1970 T120 Bonnie. 2009 500 Bullet. |
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el__burro
Senior Member Joined: 04 Aug 2018 Location: London UK Status: Offline Points: 423 |
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Do you think the nut should be turned in more.
el__burro
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Dave P.
Senior Member Joined: 12 Jan 2015 Location: Northants Status: Offline Points: 5573 |
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Tun it is as far as it will go at which point the exhaust pipe should be firmly attached to the head with no looseness or shake. Then do up the lock nut. It does look to me as if it should go further in. Your photo above of the nut well in without a locknut and wired looks better to me. If the lock nut is preventing the main (sleeve) nut from holding the pipe fully home then I would leave it out. My Loops don't have lock nuts, they didn't come from the factory with lock nuts and they're fine so long as you keep them regularly checked for tightness. The damage to threads occurs when they are not monitored and come loose.
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TO LIVE OUTSIDE THE LAW YOU MUST BE HONEST.
1971 V7 Special. 1972 850GT. 1970 T120 Bonnie. 2009 500 Bullet. |
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Brian UK
Moderator Group Joined: 13 May 2014 Location: Surrey Status: Offline Points: 17641 |
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That nut doesn't look as if it is screwed in enough to be safe. Looks like it's only in a couple of turns at most, which is very likely to strip the thread in the port. Unless that new nut is much longer than I think.
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Brian.
Better 5 minutes late in this world than years early in the next. |
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