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Puddle Jumper
Posts: 12
| Like I mentioned in my last (and first) post, I'm here to learn a bit about the Vision. I have a question for you owners about the exhaust pipe setup.
On the right side, it appears that both headers feed into a single exhaust, but I can't really tell because of the cover. But then, there's a pipe on the left side as well. Does the header actually cross over to the left side, or is the left pipe a fake?
Thanks!
~SM |
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Tourer
Posts: 415
| Cross over pipe.
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Cruiser
Posts: 118
Capitol Region of NH | There is a cross over under the bike just forward of the rear tire. You can actually see it in some side pictures. I is a rectangular chromed pipe. |
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Tourer
Posts: 415
| RPW has a 2 into 1 with a fake pipe. |
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Puddle Jumper
Posts: 12
| Seems weird, not terribly efficient flow, but at least it IS functional, I guess. I have serious issues with non-functional fake bits (like side scoops on new Mustangs, for example).
~SM |
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Cruiser
Posts: 70
Fryeburg ME | Swordsman - 2010-10-27 11:10 AM
Seems weird, not terribly efficient flow, but at least it IS functional, I guess. I have serious issues with non-functional fake bits (like side scoops on new Mustangs, for example).
~SM
Can of worms but please explain "Seems weird, not terribly efficient flow" are you referring to the crossover as "non-functional fake bits " ? |
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Visionary
Posts: 2300
Georgia, west of Atlanta | The crossover is fuctional, it's not pefect, but it does allow the engine to breathe through two mufflers............... |
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Visionary
Posts: 2118
Pitt Meadows, BC Canada | Virtually ALL 'stock' bikes have some sort of 'unifying' system that helps the engine scavenge each firing sequence (suck the gasses out). This helps the engine run smoother, and attain better gas mileage.
At very high RPM in a hot-rodded engine - this is not so important - so 'hot-rodders' have been known to go with 'straight-pipes' to speed up the exhaust process.
While this works on a hot-rod, it does NOTHING to make a street bike run better - in fact - makes it worse - which is why the engineers put the crossover on ALL bikes.
Remember the Honda 750-4 ? Those 4 pipes curling out of the front of the engine went into a single chamber - then exited into 4 exhaust pipes.
All my Virago V2's had a similar setup.
When you see 'true' pipes on a street bike (no crossover) just smile, in the knowledge that your bike runs better. |
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Puddle Jumper
Posts: 12
| Visioness - 2010-10-26 11:32 PM
Can of worms but please explain "Seems weird, not terribly efficient flow" are you referring to the crossover as "non-functional fake bits " ?
I was referring to 1.) the pipe being tied in at a (roughly) right angle, and 2.) the pipe being rectangular instead of rounded. Both factors would be impeding smooth airflow. I didn't mean the crossover was non-functional. I thought perhaps the left pipe was entirely fake since both headers looked like they joined in the right pipe. I had seen where someone had an aftermarket setup like that, and made me wonder about the stock one.
~SM |
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Tourer
Posts: 390
| If you look at aftermarket pipes for other makes you will see this crossover in different shapes. Each Mfr. has their own prefered shape. From what i understand it alows the pressure wave to carry out without stopping momentairly when the valve closes. So the shape may or may not affect the wave leaving ....just depends on the designer. IMO
I just tell people its my Dilitheum Intermix Camber......
Edited by chesshiretuna 2010-10-27 1:21 PM
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Cruiser
Posts: 52
The Great Northwet | Good question Cliff....keep asking them so we all have a chance to figure out these wonderful machines....Ride On! |
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Cruiser
Posts: 123
NE Florida Jacksonville | I just installed the L1S2 pipes on my Vision and you will also find a catalytic converter in the right pipe. That explains the hot spot in that location. I'll ride over to POG and get the Stage I down load done tomorrow. |
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Tourer
Posts: 388
Salisbury, NC | There is a catalytic converter in the left pipe also. It is before the bend. When I took mine apart, I noticed that both had 1" holes in them. OOPs, then I read on here it was better not to remove them. ET |
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Tourer
Posts: 466
Grand Cane, LA | If you have 1" holes in them, then they are defective or someone has drilled them out. They are solid honeycombs. Pulled them out of my original header and they were a pain in the a** to get out due to the crimp in the pipe that holds them. Had to buy another header because the bike ran like crap without them. Exhaust would only flow out one side without them. |
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Tourer
Posts: 363
Goldsboro, NC | Swordsman - 2010-10-27 11:10 AM
Seems weird, not terribly efficient flow, but at least it IS functional, I guess. I have serious issues with non-functional fake bits (like side scoops on new Mustangs, for example).
~SM
I expect you'll be cutting off your nipples, then? |
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Tourer
Posts: 363
Goldsboro, NC | XRsteve - 2010-10-27 11:35 AM
The crossover is fuctional, it's not pefect, but it does allow the engine to breathe through two mufflers...............
I have a burn scar on my left calf to prove it! |
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Iron Butt
Posts: 742
North Orange County CA | trailbarge - 2010-11-01 8:46 AM
Swordsman - 2010-10-27 11:10 AM
Seems weird, not terribly efficient flow, but at least it IS functional, I guess. I have serious issues with non-functional fake bits (like side scoops on new Mustangs, for example).
~SM
I expect you'll be cutting off your nipples, then?
ROFLMAO; TB you kill me sometimes! |
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Puddle Jumper
Posts: 12
| trailbarge - 2010-10-31 11:46 PM
Swordsman - 2010-10-27 11:10 AM
Seems weird, not terribly efficient flow, but at least it IS functional, I guess. I have serious issues with non-functional fake bits (like side scoops on new Mustangs, for example).
~SM
I expect you'll be cutting off your nipples, then?
Oh, they serve a purpose. They're the "off switch" when my wife gets mad at me. 
~SM |
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Visionary
Posts: 1484
LaPorte,Tx. | trailbarge - 2010-11-01 9:46 AM
Swordsman - 2010-10-27 11:10 AM
Seems weird, not terribly efficient flow, but at least it IS functional, I guess. I have serious issues with non-functional fake bits (like side scoops on new Mustangs, for example).
~SM
I expect you'll be cutting off your nipples, then?
TB, that made me  !!! Thanks I needed one today. |
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Visionary
Posts: 3204
Memphis | There's a poster there somewhere but I think I'll just walk away...... |
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