Installed Dean Adams RT-1 now bike "SHAKES" at low RPM

[Risp]

Ok, I need some help on this one.

I mounted a Dean Adams RT-1 pipe on my 07 TT. Now the bike "shakes" when the engine is decelerating from 2000 RPM to 1500 RPM or so. Shaking not vibrating. It's like there is a resonate structural frequency right in that range or something. Everything is smooth at all other RPMs.

I rechecked all bolts and clamps and everything is tight. I couldn't get a torque wrench into the rear clamps so that was tightened until the bands were taught. Is there any way I could have screwed up mounting this pipe?

Any help is appreciated! I'm nervous to ride it because I don't want to damage anything.

 

[Theycallmecrash]

What exhaust did you get?
Now its time to replace the front muffler mount bushings, bolt and nut. Congratulations your 1 of very few who can feel your motorcycle! If the shale continues afyer those small pieces replaced its coincidence and more info will be needed

 

[Theycallmecrash]

Holy crap, i cant type on a phone

 

[ToneTheMoan]

I would loosen all the mounts again (not completely) and give it all a good wiggle as you may have mounted it under a bit of tension so with the pipe loose but supported you may find it settles after that? but do it after doing what crash said he knows a lot more than me! but i am learning! lol you shouldnt have damaged it mounting it but it needs sorting sooner rather than later to protect your header mounting studs etc

 

[DSHUMAKER]

I've got the Rt-xb1 on mine absolutely love it!! I would loosen everything up and start over. I had a problem getting mine lined up at first and I over tightened everything. You will get it if not call Dean I guess.

 

[Risp]

Alright, I'll give all of the above a shot. The ASB bushings and bolts as good as anywhere else? My bike only has 2K on it, is it normal for those bushings to need replacing already? Also, are folks using the manual torque for this or something else?

Also, question for those who are running a Dean Adams pipe, are you using the stock Torca clamp on the header to downpipe or the t-band clamp that was sent with the pipe?

Thanks guys.

 

[DSHUMAKER]

With 2k bushings should be great. I used a t band on mine and just tightened everything down by feel I don't own a torque wrench yet.

 

[d_adams]

You can use either clamp, I send it along in case your stock/original is missing. It shouldn't shake any more than it did in stock condition. Also, the bushings shouldn't need replaced at 2k miles, but installing new ones won't hurt anything. They're relatively inexpensive. I probably have several sets of them here hiding in a cabinet somewhere.

 

[Risp]

Ok, I took off the pipe, inspected and cleaned the bushings. They only have 2k on them and look perfect so I reinstalled.

I put the pipe back on. Those rear band clamps are a pain. I did my best to align the pipe. However, no matter what I do, there is no way I can make the front mount align evenly with the pipe in place. I have to align the front mount and push the bolt through which aligns the mufflers an inch or so below the rear bracket. From there, when I push the muffler into place, the front mount binds the bolt and the muffler to downpipe joint. I tighten the rear bands to manual torque, then the mid pipe band by feel, then the header band by feel (the manual torque seemed to high for the t-band clamp), then the front mount bolt to manual spec.

Bottom line, rode to work this morning, I can still feel the shake as the engine decelerates from 2000 through 1500. Might be slightly less but still there.

Excuse my long post. Either this pipe just doesn't fit my bike or I'm screwing up the install. It seems like it should be easy. Does it sound like I'm doing something wrong? Thoughts?

 

[AZmidget91]

Try putting the stock muffler back on. Maybe you didn't notice the vibrations before because the muffler was quieter. You would be surprised how much noise and vibration feed into each other. Having a noise that matches a vibration will make both seem much worse.

 

[d_adams]

Sent you a pm with a suggestion for mounting the pipe.

 

[Theycallmecrash]

Only shakes on decel? If thats the case your front engine isolator to frame might have taken a crap.

 

[Cooter]

I'm with the Midget and Crash on this one, that's a pretty narrow rpm window, and an odd thing for exhaust to cause. 2K miles isn't much but check the isolator.