Won't someone please think of the children? Why do people do this?
I understand some bikes come factory fitted with twin pipes (ZZR1200, ZX14, z1000 etc.) but if you were doing the replacement thing wouldn't you be better off with a 4 into 1 than a twin system? Is it because when people just buy cans they have to buy two?
Is this still cheaper than a full 4 into 1 system or just easier?
Wouldn't a 4 into 1 be lighter?
I understand with twins or V4s that dual pipes could be the go but an inline 4 will be better off with 4 into 1 yeah?
I don't geddit...
Tony
I have become race...
the kid wrote:But remember one thing , Dave #3 watches videos of rampant Circus Ponies every time Cath goes down the street shopping so dont listen to anything he says .
depends if you want to keep the look? my z650 resto had 4/1 but i'm changing it back into 4/2..my Gpz750r was 4/2 and is 4/1.. but hey i'm a slut I just do want I want
Only a Motorcyclist knows why a dog rides with his head out the car window
Bikes:Zrx1200r Z650 Gpz750r Cbr1000f & Postie!
While there are differences in 4-2 vs 4-1 most systems that have twin outlet pipes normally go 4-2-1-2 or 4-1-2
Actually most v-twins even go 2-1-2 or 2-1
From my past work and all the dyno runs we did and out of all the myths we busted only crazy harley guys go 2-2 with no balancing pipe between each pipe while this picks up a very small peak hp gain it slaughters torque down low. Also the tourer harleys with 2-1-2 would lose peak power and gain no torque over 2-1 setups.
Moral of the story as long as it goes to 1 after that point its weight and looks.
Note: The above is for most motor power applications there are exemptions i.e. drag bikes, moto gps long tuned length runners per each cylinder but these still balance at some point i think could be wrong
Kawasaki ZX-10R 2008 - R77 Yoshi full system, PC3 Custom Mapped, Benneli bar end mirrors, Puig Double Bubble, Radiator protector, CircuitOne Mirror blanks, Pazzo levers, Shift-I, etc
the 4 into one allows a more equal distrubuhion through all cylinders great for power with the write pipe diameters but they do go a 4 into 2 into 1 witch gives a wider power band the 4 into 2 is more of the syle of bike they still flow good (better in standed form)but need a decent cross over to conbine all the cylinders but more weight.
Bogan wrote:
Is this still cheaper than a full 4 into 1 system or just easier?
A set of twin slip-on's is still cheaper than converting to a single as you then need a full system.....Also not all companies do full system's ie:Screaming deamon do an awesome twin slip-on for my bike but no 4-1....And I can't ride my bike to it's potential so would be wasting money chasing a few extra HP so I'm sticking will the duely's hope you don't loose any sleep with my decision Tony
Bogan wrote:
Is this still cheaper than a full 4 into 1 system or just easier?
A set of twin slip-on's is still cheaper than converting to a single as you then need a full system.....Also not all companies do full system's ie:Screaming deamon do an awesome twin slip-on for my bike but no 4-1....And I can't ride my bike to it's potential so would be wasting money chasing a few extra HP
Its more the manner in which its delivered IMHO, I will hold my little Z up as exhibit A It aint got alot, but its delivered in a laugh-a-minute kinda way
BTW I'm not fussed, each to thier own - but I wont own a 4 cylinder bike with twin pipes
I like some 4 cylinder twin exhaust bikes. Like the GSXR1100, the ZZR1100, CBR1000F. I think they suit the bike. But, I don't think a twin exhause on a 2011 ZX6R would look all that cool....not even a little shortie under the bellypan.
Oh, and if nothing makes sense...it's OK, I'm wankered.....
"I hate to advocate drugs, alcohol, violence or insanity to anyone, but they've always worked for me" Hunter S. Thompson.
There are really only two questions in life. 1.Which way do i go? 2.What is the lap record?
I thought, well I have seen it done of v8's is to take it 4 into 1 with a correctly designed exhaust will create a vacuum in the manifold and in effect suck the exhaust fumes out from the ensuing firing cyclinder, thereafter I figure it is looks and weight.
Then again I only read and watch the shows, nfi on actually putting into practice.
Some of it is to do with emission's and noise control from a manufacturing point of view.
ZX12R for example has one of the biggest single cans around and being a sports bike singles were the norm at that time..
ZZR1400 comes with 2cans as it fits with earlier model designs (symmetry) but also easier to make emissions and noise constraints.
