Dual Exhaust?

Discussion in 'Parallel Universe' started by Motorfiets, Oct 8, 2011.

  1. Motorfiets

    Motorfiets Long timer

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    [​IMG]
    #1
  2. BluWolf

    BluWolf Been here awhile

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    Very sexy. How was the conversion done?
    #2
  3. dendrophobe

    dendrophobe Motorbike Junky

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    It looks great, but I can't help but think that space would be better served with a tool tube or fake exhaust like the 650 Dakar had. Are the benefits of dual exhaust (besides looking sexy) that good?
    #3
  4. señormoto

    señormoto Supermoto Abuser

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    nice build, looks really well thought out - but... seems the extra weight isn't getting you much but negative performance via weight.
    #4
  5. MSH

    MSH The Salt

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    Cool! Is this a one off? :ear
    #5
  6. señormoto

    señormoto Supermoto Abuser

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    :lol3

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    um yeah I think so :1drink
    #6
  7. raider

    raider Big red dog

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    That's a beautiful bike, it really is. But I can't help but think he'd have saved time and money by getting one of these instead:

    [​IMG]
    #7
  8. Captain Beardylocks

    Captain Beardylocks travelling beardo

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    why?
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  9. Lounge

    Lounge Been here awhile

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    You really think that exhaust, as opposed to the stock exhaust, weighs more??? Furthermore, the gains in HP, I would venture a guess negate any 'weight gain' those small cans and another 2 feet of titanium pipe (assuming) add.

    It's cool - period.

    I'm kind of tired of everyone dissing people's mods just because it doesn't make sense to them - chill the fuck out people... red rims!?!? :1drink

    [ / end rant ]
    #9
  10. Motorfiets

    Motorfiets Long timer

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    practical, sensible, feasible, reliable, realistic are all good things........





















    but don't give you the badass "harley style" mentality..... if it looks cool who cares! :lol3
    #10
  11. señormoto

    señormoto Supermoto Abuser

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    Well, I'd go ahead and disagree with you. I just put arrow headers and a ti leovince pipe on my F8 and I can certainly say that the weight of an extra pipe (even another ti pipe) would add weight. Pretty simple; more weight = less performance.

    Sure it looks cool but if it's really being setup for offroad performance then extra weight is not a good thing. A good example is the 2006+ CRF250R that came with dual pipes and lots of racers changed it back to a single pipe when running after market exhaust because more weight = slower and worse handling.

    RE: people discussing what they don't like - positive and negative feedback is exactly what a forum is about. If you post up pics of your ride be prepared for people to weigh in on their viewpoint from their experience. If you want every comment to be happy fun positive circlejerking then you might want to go elsewhere.

    Personally I think the dual pipes are a waste of money and weight, but I guess I'm just too pragmatic for buying shit solely because it looks cool. If it looks cool it must also work well and make practical sense. Form over Fashion please.


    EDIT: as for the KTM 950SE; I had one of those bikes and I converted it over to a single leo vince with Berg Briggs' help (he made a 2->1 collector) and the weight savings was very good over not only the stock but also over dual ti leos. Dual Pipes SUCK! .... as for comparison sake, the F8 has a lot of positives over the 950SE. 1) larger fuel capacity (950SE gets 120 miles per tank max and it severely limits ride options), 2) easier to control off road due to lower center of gravity and lower overall weight, 3) on and on and on... F8 is a better all around bike and unless you're a hulking 6'6" austrian then the F8 is a better bike off road for most riders.
    #11
  12. Lounge

    Lounge Been here awhile

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    So adding a BDS blower (~ 40 lbs) to a 350 small block amounts to a decrease in performance because it adds weight??? Sure, apples and oranges but that's the basis of your argument.

    That's it... I'm adding a sattelite dish to my bike.

    How about billet pegs - they weigh significantly more than my stock pegs - enhance performance? Hell no - stronger, and more sturdy, absolutely.
    #12
  13. grndzr0

    grndzr0 its Ground Zero

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    I think what everybody is trying to get at is that for this particular engine size, the stock single exhaust with an aftermarket can is about as efficient as you can get. It will flow more than the engine can put out in its "normal"-"slightly modded" configuration.

    Is 1 lighter than 2? Definitely

    Will 2 produce more power to make up for the added weight?? Lets see some dyno results and then we can put this to sleep.

    Does it look totally BA?

    Of course!!

    Ryan
    #13
  14. TowPro

    TowPro Lets ride

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    I like the center red inlay in the seat. I am looking at modifying my Comfort seat (for more comfort). If it involves sewing a new cover, I will look at doing the same type 2 tone with red. Since my bike is a 30th year anniversary bike, it will look good.
    #14
  15. señormoto

    señormoto Supermoto Abuser

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    Um, a blower increases HP. A second pipe and can adds nothing. These engines are not big enough to have a HP or torque benefit to dual exhaust, they just don't flow enough to require it. So, yeah... adding weight with an extra pipe and can will give absolutely zero gains over a single aftermarket header+can.

    Put a blower on the F8, then you can talk about increased weight adding performance.
    #15
  16. TowPro

    TowPro Lets ride

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    Wait, the 2006 F650 has Dual exhaust :) and that's on a single cylinder engine?
    so thats OK on a 650 but not the 800?

    [​IMG]
    #16
  17. Y E T I

    Y E T I Unpossible

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    I believe, and someone will tell me I'm wrong if I am, that one of the exhausts is actually fake.
    #17
  18. Motorfiets

    Motorfiets Long timer

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    kinda... it does have a cross over line....

    [​IMG]
    #18
  19. Y E T I

    Y E T I Unpossible

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    Ah. I was going on my recollection of Charley Boorman using the space to store extra water in his Dakar bike. Of course, that bike might have had a custom exhaust... :baldy
    #19
  20. señormoto

    señormoto Supermoto Abuser

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    Prime example of the point that two exhausts do not make more power. Seriously, nothing is gained but aesthetics and then only to those that don't see the uselessness of it.
    #20