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General Category >> Rubber Side Down! >> dyna swap exhaust leak - solutions from here?
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Message started by strang on 05/08/13 at 13:59:52

Title: dyna swap exhaust leak - solutions from here?
Post by strang on 05/08/13 at 13:59:52

Did the dyna swap and followed Serow's tutorial with the serrated can as a gasket and good quality clamp. Holding my hand around the join I can feel a leak. Bike is running #55 pilot and is running pretty well but maybe still a little bit lean from take off.
What's the best solution from here?
- try putting another exhaust clamp on?
- weld the muffler to the pipe?
- leave as is and put in a larger pilot jet?

Title: Re: dyna swap exhaust leak - solutions from here?
Post by wearsabrowncoat on 05/08/13 at 14:45:04

I used some hi temp sealer that came with my blue collar kit. I'll check the tube when I get home. I don't think anyone would recommned welding.

Title: Re: dyna swap exhaust leak - solutions from here?
Post by verslagen1 on 05/08/13 at 14:50:11

Some have taken the extreme road and welded it on.

question is... is it backfiring? if not leave it alone.

Title: Re: dyna swap exhaust leak - solutions from here?
Post by ToesNose on 05/08/13 at 14:56:15

you can also go to the local muffler shop and have them make you a 1 3/4" adapter with a 10 degree bend, you'll get a tighter seal and have the offset so that the rear brake setup doesn't get sooty. Just bring the head pipe and have them bump the one side up to fit it perfectly, should only cost you $10/$15 ;)

Title: Re: dyna swap exhaust leak - solutions from here?
Post by strang on 05/08/13 at 16:03:02

it's backfiring a bit - popping quite a lot.
I'm gonna need to go up another pilot to 57.5 to get the mix screw right and under 3 turns. From my reading Dyna and Filter change should only need pilot 55 so it must be the leak making it more lean.
In one way it's free flowing so it must be an upgrade ;)
I'll try some exhaust goo. And if that don't work I'll ask my local muffler place about the offset - good tip thanks.

Title: Re: dyna swap exhaust leak - solutions from here?
Post by ToesNose on 05/08/13 at 17:39:53

Wait till you get the exhaust leak fixed till you start ordering jets. When I had the first intermediate pipe made it leaked because I had him bump up the wrong side, my bike was popping and backfiring like a son of a gun. After I had him redo the pipe and got a nice tight fit eliminating the leaks, I no longer had any backfiring and only slight pops. Now that I've adjusted the idle mix properly I only get an occasional pop and don't feel I need to rejet at all. I'm not sure if the longer intermediate pipe makes a big enough difference that I don't have to rejet with the Dyna, but it's running perfectly smooth across all power bands.

Oh and it sounds sooooo sweet! ;)