 Crossover Tube
|
Joined: Aug 2009
Posts: 1,669
Learned Hand
|
OP
Learned Hand
Joined: Aug 2009
Posts: 1,669 |
I saw an old post where someone mentioned removing this. Has anyone still around done it and if so what diffrence if any has it made?
|
|
|
Re: Crossover Tube
|
Joined: Aug 2007
Posts: 10,735 Likes: 7
Should be Riding
|
Should be Riding
Joined: Aug 2007
Posts: 10,735 Likes: 7 |
it changes the sound and not much else
Always remember to be yourself. Unless you suck. Then pretend to be someone else.
|
|
|
Re: Crossover Tube
|
Joined: May 2010
Posts: 5,720
Check Pants
|
|
Check Pants
Joined: May 2010
Posts: 5,720 |
This was kicked around awhile back and I believe the consensus was, you got a slightly different note from the exhaust and lost a bit of power. I tried it too, and went from a total block off to tacking a flat washer in the crossover with about a 30% restriction. I suggest you just plug the tube and see if it works for you before you commit and remove it entirely.
|
|
|
Re: Crossover Tube
|
Joined: Feb 2008
Posts: 2,671 Likes: 15
Loquacious
|
|
Loquacious
Joined: Feb 2008
Posts: 2,671 Likes: 15 |
Keep in mind that removing or blocking the crossover will likely reduce max flow.
|
|
|
Re: Crossover Tube
|
Joined: Feb 2007
Posts: 23,243 Likes: 64
Fe Butt
|
|
Fe Butt
Joined: Feb 2007
Posts: 23,243 Likes: 64 |
I removed the tube and welded the hole shut with a freeze out plug. It changed the exhaust not but did not effect the power at all. I run completely open pipes except for the reducer cone, this may be why there was no loss of power. If you have restrictive pipes losing that passage for exhaust gases may effect power output.
I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!
|
|
|
Re: Crossover Tube
|
Joined: May 2007
Posts: 5,068 Likes: 1
Saddle Sore
|
|
Saddle Sore
Joined: May 2007
Posts: 5,068 Likes: 1 |
Hey Matt, I disabled mine and it made a distinct British twin pop pop pop pop sound in a nice staccato rap, but I did lose a noticeable amount of low end torque.
So, pursuant to the sage advice of a good friend and Triumph guru near me, I enabled the crossover.
And look at it this way, if some vindictive punk tries to cram a potato, rutabaga, beet or some other Eastern Block nation's state vegetable down in your exhaust pipe, you have a crossover tube to alleviate the pressure. Now if they stop up BOTH tubes, well, I really should turn off the expresso maker and try to go to bed.
|
|
|
Re: Crossover Tube
|
Joined: Feb 2012
Posts: 544
Adjunct
|
|
Adjunct
Joined: Feb 2012
Posts: 544 |
Unless you go nuts with open pipes and a rejet, it'll mess with back pressure enough for the torque to suffer.
|
|
|
Re: Crossover Tube
|
Joined: Apr 2008
Posts: 3,937
Loquacious
|
|
Loquacious
Joined: Apr 2008
Posts: 3,937 |
MANY modern race cars, with open exhausts, still have a cross-over (X-pipe). Not a motorcycle, but still a four stroke engine. 
And you may see me tonight
With an illegal smile
J. Prine
|
|
|
Re: Crossover Tube
|
Joined: Aug 2009
Posts: 1,669
Learned Hand
|
|
OP
Learned Hand
Joined: Aug 2009
Posts: 1,669 |
Well I already have completely open pipes, (all baffles removed, reducer cone in place) K&N pods and jetted 152.5 mains and 42 pilots. So with the above consensus I don't think it would hurt to try it.
|
|
|
Re: Crossover Tube
|
Joined: Feb 2012
Posts: 544
Adjunct
|
|
Adjunct
Joined: Feb 2012
Posts: 544 |
Oh yeah, at that point go for it man! I have damn near the same set up! My only reasoning for keeping my cross over is to help support my pipes.
|
|
|
Re: Crossover Tube
|
Joined: Feb 2008
Posts: 2,671 Likes: 15
Loquacious
|
|
Loquacious
Joined: Feb 2008
Posts: 2,671 Likes: 15 |
Quote:
MANY modern race cars, with open exhausts, still have a cross-over (X-pipe).
Not a motorcycle, but still a four stroke engine.
That is in part because the crossover helps exhaust scavenging & midrange power.
|
|
|
Re: Crossover Tube
|
Joined: Jan 2005
Posts: 4,074 Likes: 83
Loquacious
|
|
Loquacious
Joined: Jan 2005
Posts: 4,074 Likes: 83 |
Quote:
That is in part because the crossover helps exhaust scavenging & midrange power.
Yep... what he said.
|
|
|
Re: Crossover Tube
|
Joined: May 2010
Posts: 189
Adjunct
|
|
Adjunct
Joined: May 2010
Posts: 189 |
I've done it. I cut the crossover at the exhaust pipe. It gives it a different tone. I think it sounds a lot better. If it looses any power I could not tell it. If you upgraded to free flowing intake/exhaust and rejetted I'm sure that would make any you lost back. listen to my sound clip http://www.bonnevilleamerica.com/resources/audio-video-files/
07 TBA, 32" Turnouts, DIY Freak, hard saddlebags, 18" screen, dresser bars, highway pegs, floorboards, fog lights, amber run/turn lights front, red run/turn/stop lights back, blue speedo/tach lights, LED console lights
|
|
|
 Re: Crossover Tube
|
Joined: Jun 2006
Posts: 2,626
Loquacious
|
|
Loquacious
Joined: Jun 2006
Posts: 2,626 |
I blocked it off w/a freeze plug. It made the exhaust sound a deeper pitch but otherwise the same power.
What these tubes are good for is equalizing exhaust backpressure between the two sides.
If you run an exhaust w/o much backpressure (I use 16" open shorty mufflers) there is really nothing for the pipe to do.
Not enough backpressure to begin with. The race cars that use it are the ones with longer exhaust runs that, even if they are open race pipes,
have some backpressure do to their length.
Steelheart- '03 Speedmaster Black/Yellow
The Hayabusa Killa
16" Shorties/140 mains/Airbox drilled
Procom CDI
"There is no cure for Celibacy. But we can treat the symptoms."
|
|
|
Re: Crossover Tube
|
Joined: Mar 2009
Posts: 12,964
Stickman Yogi
|
|
Stickman Yogi
Joined: Mar 2009
Posts: 12,964 |
I blocked mine with TORs. It impeded performance to I put it back the way it was.
Live to love, love to live.
|
|
|
Re: Crossover Tube
|
Joined: May 2010
Posts: 189
Adjunct
|
|
Adjunct
Joined: May 2010
Posts: 189 |
When I first cut mne I had long TORs. I put in a UNI ail filter at the same time and noticed no differance, except for a better sound. If any power is lost I'm sure it's minimal. I since have done a FREAK and 32" turnouts (with a rejet).
07 TBA, 32" Turnouts, DIY Freak, hard saddlebags, 18" screen, dresser bars, highway pegs, floorboards, fog lights, amber run/turn lights front, red run/turn/stop lights back, blue speedo/tach lights, LED console lights
|
|
|
Re: Crossover Tube
|
Joined: Feb 2012
Posts: 544
Adjunct
|
|
Adjunct
Joined: Feb 2012
Posts: 544 |
Brian t killed it a few posts above.
On a different note, our bikes run like death when the right pipe is wide open and the left isn't. I lost my baffle last night a mile from my house. Sounded awesome. Haha
|
|
|
Re: Crossover Tube
|
Joined: Apr 2008
Posts: 3,937
Loquacious
|
|
Loquacious
Joined: Apr 2008
Posts: 3,937 |
Quote:
Brian t killed it a few posts above.
Actually , I think B02S4 nailed it, three posts prior to that. 
And you may see me tonight
With an illegal smile
J. Prine
|
|
|
Re: Crossover Tube
|
Joined: Mar 2012
Posts: 262
Adjunct
|
|
Adjunct
Joined: Mar 2012
Posts: 262 |
I've often wondered about that crossover pipe (remove or keep). My pipes are completely gutted out and sportster baffles bolted in place, sounds good and loud and no loss of torque. If get around to some head work then I'll take off the header wrap, cut that clumsy crossover, plug it and re-wrap. That's my 2 cents! 
"Get busy living or get busy dying. That's ****** right."-Red
|
|
|
Re: Crossover Tube
|
Joined: May 2007
Posts: 5,068 Likes: 1
Saddle Sore
|
|
Saddle Sore
Joined: May 2007
Posts: 5,068 Likes: 1 |
you should plug it with some expandable rubber freeze plugs if you're gwine ta do it, so's you can put it back if you notice a reduction in torque. (i did)
|
|
|
Re: Crossover Tube
|
Joined: May 2010
Posts: 5,720
Check Pants
|
|
Check Pants
Joined: May 2010
Posts: 5,720 |
Someone on here, maybe Keith, stated that there were metal freeze plugs at the auto parts store that were a plugin pullout size. Rubber, at the least would stink up the joint.
|
|
|
Re: Crossover Tube
|
Joined: Feb 2012
Posts: 544
Adjunct
|
|
Adjunct
Joined: Feb 2012
Posts: 544 |
True and I really need to get better at checking up on things I post on. Hahaha little late on this one.
|
|
|
Re: Crossover Tube
|
Joined: May 2007
Posts: 5,068 Likes: 1
Saddle Sore
|
|
Saddle Sore
Joined: May 2007
Posts: 5,068 Likes: 1 |
dang, that's what I meant, NOT those soft black rubber ones, they would melt. i had some expandable metal ones when I blocked mine. U can also block it with a conventional freeze plug if ya get just the right size it'll wedge in, drill it and put a screw in it so's ya can pop it pop it out when ya find no power gain. 
|
|
|
Re: Crossover Tube
|
Joined: Mar 2009
Posts: 12,964
Stickman Yogi
|
|
Stickman Yogi
Joined: Mar 2009
Posts: 12,964 |
Quote:
Someone on here, maybe Keith, stated that there were metal freeze plugs at the auto parts store that were a plugin pullout size.
True... I just can't remember the size.
Live to love, love to live.
|
|
|
Re: Crossover Tube
|
Joined: Mar 2009
Posts: 12,964
Stickman Yogi
|
|
Stickman Yogi
Joined: Mar 2009
Posts: 12,964 |
Quote:
U can also block it with a conventional freeze plug if ya get just the right size it'll wedge in, drill it and put a screw in it so's ya can pop it pop it out when ya find no power gain.
You described my experience perfectly.
Live to love, love to live.
|
|
|
Re: Crossover Tube
|
Joined: Feb 2007
Posts: 23,243 Likes: 64
Fe Butt
|
|
Fe Butt
Joined: Feb 2007
Posts: 23,243 Likes: 64 |
I cut mine and welded the holes shut. No power loss at all but I run completely open pipes. Only change was a better exhaust note.
I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!
|
|
|
|
|
