Exhaust install question..? Supertrapp
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From: nyc
Exhaust install question..? Supertrapp
Changing exhaust on my 09 Cross Bones to a 2 into 1 Supertrapp. Guys at Harley told me I needed to replace the "lead" rings.. (???) I don't remember them when I removed the old exhaust... (but it was a while ago, might have forgotten)
Dose anyone know if these are needed? did the old ones melt onto the motor? Do I have to scrape or clean out the area where the exhaust mounts to the motor? If these are needed, do I just keep tightening until these mold or get squashed in like a gasket?
I just have the new exhaust set in place but haven't bolted them on yet...
Has anyone have these ... It looks a bit tight at the floor board, Hoping it'll have more room once tight.. Also the bottom Bracket doesn't seem to line up... not sure if it will once all tight, or I'll have to modify this bracket.. (I got them used, not sure of the bike but this model is for softails)
Yes, I know, another dumb question on something that is probably common knowledge...
I'll try to post a pic of the Crossbones so you know what I'm talking about...
thanks guys...
Dose anyone know if these are needed? did the old ones melt onto the motor? Do I have to scrape or clean out the area where the exhaust mounts to the motor? If these are needed, do I just keep tightening until these mold or get squashed in like a gasket?
I just have the new exhaust set in place but haven't bolted them on yet...
Has anyone have these ... It looks a bit tight at the floor board, Hoping it'll have more room once tight.. Also the bottom Bracket doesn't seem to line up... not sure if it will once all tight, or I'll have to modify this bracket.. (I got them used, not sure of the bike but this model is for softails)
Yes, I know, another dumb question on something that is probably common knowledge...
I'll try to post a pic of the Crossbones so you know what I'm talking about...
thanks guys...
Last edited by Damion; Apr 17, 2012 at 09:19 PM.
Road Captain
Joined: May 2010
Posts: 507
Likes: 4
From: Wentzville, Missouri
Those are the gaskets for the head pipes. You do need them and it is usually recommended that when changing out the exhaust, you replace them. The "old" ones do not melt into the motor and are still in there if you haven't removed them. You need to remove the old ones before putting new ones in. They do get squashed when tightening up the head mounts. That's what they're supposed to do to get a good seal. There are two types I'm familiar with. The stock ones (your picture) are thick and the Screamin Eagle ones are thin. The idea for the SE gaskets are that when they compress, there's less material to deform and obstruct the exhaust port. This would allow better exhaust flow. The downside is that sometimes they don't seal well and you have an exhaust leak. Lots of opinions of this...At any rate, check and see if you left the old ones in there.
Stellar HDF Member
Joined: Oct 2009
Posts: 2,054
Likes: 26
From: Florida
SuperTrapp
I recently put on a Supertrapp 2:1 on my Crossbones. Seems like you have figured out that you do have to replace the exhaust gaskets and that the old ones have to be removed. Good think you got the stock style gaskets. I was going to go with Screamin' Eagle gaskets but when I got a hold of the instructions for the Supertrapp pipes, they clearly stated NOT to use the "flat style" gaskets and to use the H-D stock style.
Not sure what it is about Supertrapp pipes but my rear bracket for the muffler did not line up either, even when everything was tightened down. There are two mounting points on mine and only one lined up but fortunately it is enough to secure the muffler until I come up with a clean solution for the other bolt. I also bought mine used on eBay for $225.
My exhaust is a different style than yours so not sure what applies and what doesn't when compared.
How many discs are you planning to run on your's? I am currently running 18 and it sounds great but I think I will take it down to 12 because I think I feel I lost some torque with the pipe so open. I also haven't done any intake mods or fuel management. Once I get a good feel for the pipes I have a SE Stege 1 breather just waiting to go on. As for fuel management, I have a V&H fuel pack also just waiting to go on. Not sure that I am looking forward to trying to mount that thing under my seat! What set up do you plan to run?
Here's mine:
Not sure what it is about Supertrapp pipes but my rear bracket for the muffler did not line up either, even when everything was tightened down. There are two mounting points on mine and only one lined up but fortunately it is enough to secure the muffler until I come up with a clean solution for the other bolt. I also bought mine used on eBay for $225.
My exhaust is a different style than yours so not sure what applies and what doesn't when compared.
How many discs are you planning to run on your's? I am currently running 18 and it sounds great but I think I will take it down to 12 because I think I feel I lost some torque with the pipe so open. I also haven't done any intake mods or fuel management. Once I get a good feel for the pipes I have a SE Stege 1 breather just waiting to go on. As for fuel management, I have a V&H fuel pack also just waiting to go on. Not sure that I am looking forward to trying to mount that thing under my seat! What set up do you plan to run?
Here's mine:
Road Master
Joined: Aug 2010
Posts: 1,067
Likes: 2
From: New Hampshire
My experience was that the SuperTrapp 2:1 header pipe is 1/4 to 3/8 of an inch to long for the slip on muffler.
It would not be an issue if the slip on actually slipped on far enough the align the rear mounting bolts, but the muffler interior in not correct.
The bottom line is their system does not fit without cutting the header pipe.
It would not be an issue if the slip on actually slipped on far enough the align the rear mounting bolts, but the muffler interior in not correct.
The bottom line is their system does not fit without cutting the header pipe.
Stellar HDF Member
Joined: Oct 2009
Posts: 2,054
Likes: 26
From: Florida
My experience was that the SuperTrapp 2:1 header pipe is 1/4 to 3/8 of an inch to long for the slip on muffler.
It would not be an issue if the slip on actually slipped on far enough the align the rear mounting bolts, but the muffler interior in not correct.
The bottom line is their system does not fit without cutting the header pipe.
It would not be an issue if the slip on actually slipped on far enough the align the rear mounting bolts, but the muffler interior in not correct.
The bottom line is their system does not fit without cutting the header pipe.
By the way; how many discs are you running in your pipes? Do you have intake and fuel management mods?
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From: nyc
I paid $325 + $50 shipping, so $375... But considering new ones are going for $700 or so, I didn't think I did too bad. The system looked brand new, not a single blemish and the guy re-packed it with new fiberglass.
I did want the ones you have, but in black. I like that style better with the fishtail / changeable tip that goes further back, but didn't want to pay "new" price. And waiting for one to come along because I'm to cheap to buy it new is annoying.
I'm not sure on what I'm doing next regarding any intake mods / fuel management / (ECM)... As of now all I did was relocate my ECM behind the oil bag so I can make a smaller battery cover, giving more room under seat (I have two inch springs) All that performance stuff is a bit new to me. I'm use to the carb / jetting type stuff... So once I get everything up and running, I'll start asking everyone for input. For now, I guess I'll keep it at the 18 disk, and see how that goes. I do want to keep it as quiet as possible... Me & the law in these parts don't seem to see things the same way... don't need any extra attention.
I contacted supertrapp re the fitment and there reply was that "they have no complaints or fitment issue... must be the install" so I sent them a pic, I'll see what they say...
On mine, If I mount the bracket onto the TWO bolts coming off the frame then I cant ONLY bolt ONE bolt coming from the muffler. If I use both bolts coming from the muffler, then I can only get the first hole of the bracket to catch the 2nd bolt from the frame
I did want the ones you have, but in black. I like that style better with the fishtail / changeable tip that goes further back, but didn't want to pay "new" price. And waiting for one to come along because I'm to cheap to buy it new is annoying.
I'm not sure on what I'm doing next regarding any intake mods / fuel management / (ECM)... As of now all I did was relocate my ECM behind the oil bag so I can make a smaller battery cover, giving more room under seat (I have two inch springs) All that performance stuff is a bit new to me. I'm use to the carb / jetting type stuff... So once I get everything up and running, I'll start asking everyone for input. For now, I guess I'll keep it at the 18 disk, and see how that goes. I do want to keep it as quiet as possible... Me & the law in these parts don't seem to see things the same way... don't need any extra attention.
I contacted supertrapp re the fitment and there reply was that "they have no complaints or fitment issue... must be the install" so I sent them a pic, I'll see what they say...
On mine, If I mount the bracket onto the TWO bolts coming off the frame then I cant ONLY bolt ONE bolt coming from the muffler. If I use both bolts coming from the muffler, then I can only get the first hole of the bracket to catch the 2nd bolt from the frame
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From: nyc
??? I did mention It's been a while sine I've installed an exhaust.. I want to bake sure It actually isn't me as I'm complaining to Supertrapp... I tighten it pretty tight, but when I took a closer look, I see a gap between the exhaust (?? not sure what it's called) and the motor... Is that normal..? and do you know what torque it should be at?
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Stellar HDF Member
Joined: Oct 2009
Posts: 2,054
Likes: 26
From: Florida
??? I did mention It's been a while sine I've installed an exhaust.. I want to bake sure It actually isn't me as I'm complaining to Supertrapp... I tighten it pretty tight, but when I took a closer look, I see a gap between the exhaust (?? not sure what it's called) and the motor... Is that normal..? and do you know what torque it should be at?
Road Master
Joined: Aug 2010
Posts: 1,067
Likes: 2
From: New Hampshire
I didn't have an issue with the length of the header but with the angle. I have the same muffler as you so you know that it has two mounting tabs underneath, one forward and one rear. Because the angle of the header seemed to point up slightly, the front tab would not line up with the hole in the bracket. And actually if I lined up the muffler to run in perfect line with the header then the rear tab would not line up either. What I was able to do was angle the muffler so that the rear end was down slightly and the rear most tab could line up with it's hole in the mounting bracket. This meant that the forward tab was too high but I still got a pretty solid mount since the header clamp that hold the header to the frame is just ahead of it. Everything is pretty secure and the angle is slight enough that you can't really tell that the entire length of the exhaust system is not perfectly straight. I can either expand the hole in the forward mounting tab so that it will line up or make some sort of small bracket to bridge the distance but so far the system feels pretty solid as it is.
By the way; how many discs are you running in your pipes? Do you have intake and fuel management mods?
By the way; how many discs are you running in your pipes? Do you have intake and fuel management mods?