Patti
Member
Registered: 23rd Feb 01
Location: Leeds
User status: Offline
|
got a sebring 6x4 oval back box on. want 2 make it louder, heard u can fit a straight through centre. how wud i go about this. cud i just buy a bit of exhaust pipe and fit it instead of centre box or wud i need to shell out £50 ish to get a sebring centre? also how do i go about fitting? cheers
|
Nic Barnes
Member
Registered: 5th Apr 04
Location: nowhere near ginger people
User status: Offline
|
you will loose performance making it a straight through exhaust system
|
Rileysport
Member
Registered: 18th Jun 04
Location: West Yorkshire
User status: Offline
|
quote:
Originally posted by muppetsport
you will loose performance making it a straight through exhaust system
will you  mine seems fast enough on a straight through thingemy
|
antscorsa
Member
Registered: 11th Aug 02
Location: london
User status: Offline
|
u lose backpressure so i think ur lose torque
|
Nic Barnes
Member
Registered: 5th Apr 04
Location: nowhere near ginger people
User status: Offline
|
i thought it was all a thingy about back pressure, nd reducing it causes it to have less power, unless you got silly bhp engine where you need it less restrictive though.
|
Rileysport
Member
Registered: 18th Jun 04
Location: West Yorkshire
User status: Offline
|
fcuk knows... seems to work and sounds ok 
|
Bullet Proof SRi
Member
Registered: 11th Jul 05
Location: UK - Clacton on sea - Essex
User status: Offline
|
ive not heard this b4, coz whats the point in a 4branch manifold that lets more pressure out surely
|
Rileysport
Member
Registered: 18th Jun 04
Location: West Yorkshire
User status: Offline
|
not that simple unfortunately, bike wise i know 2 strokes require a certain wedge of back pressure to generate decent power
|
Bullet Proof SRi
Member
Registered: 11th Jul 05
Location: UK - Clacton on sea - Essex
User status: Offline
|
thats true i had a 2 stroke 50cc bike sometime ago now, and if you take the exhaust off it wont actually move
|
GazBevan
Member
Registered: 27th Apr 04
Location: N.Wales
User status: Offline
|
i recently did this.... hate it now, rasps like hell now and sounds like an old nova!! :S wouldnt recommend it as it hasnt affected the performance in any way good or bad, just sounds too loud now as i removed cat and centre silencer. may sound ok if you jsut remove silencer but the extra flow makes the exhaust rasp alot... fitting standard centre section and cat again when i can afford it as im fed up with the terrible noise. much prefered the induction noise of the engine (x14xe) before... just my opinion on my exhaust though.. may sound nicer on yours as my backbox is only an irmscher one so this could be what is rasping..
|
Nic Barnes
Member
Registered: 5th Apr 04
Location: nowhere near ginger people
User status: Offline
|
bullet proof sri, if you fit a 4 branch, it isnt loosing any back pressure though, whereas getting rid of a centre box does. the 4 branch is all about the flow out of the head, each cylinder has better more equal length of flow to the centre section.
thats the way i got told it anyway
|
GazBevan
Member
Registered: 27th Apr 04
Location: N.Wales
User status: Offline
|
ami right in thinking that the center box creates backpressure by swirling the exhaust gases around as they pass through it making it harder for them to pass through it and also silencing the exhaust as it contains the baffles...
|
Nic Barnes
Member
Registered: 5th Apr 04
Location: nowhere near ginger people
User status: Offline
|
it shouldnt make it harder for the gas to pass through it though should it?
all i know about it really is that you need back pressure as it sort of pulses back up to the exhaust ports, creating a vacuum so to speak to draw more of the gasses out quicker, or something like that, lol.
i dunno, lol, im not actually sure, thats just what i was once explained about back pressure and why reducing it on not a highly tuned n/a engine is a bad idea for performance
|
