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View Full Version : bell mouth exhaust tip?


BlitZ
13-01-2007, 11:20 AM
Hi all.. need some opinions..

you reckon it would smooth the sound?
make it louder (trumpet effect) ?

or both? or do shit all?



Assumption: car is piss loud.. and almost unmuffled :thumbsup:
fatboyz39
13-01-2007, 01:03 PM
exhaust ...ahhah wtf???
.............
EfiOz
13-01-2007, 01:33 PM
Some of the F3 teams, most notably TOMS, used to run "megaphone" exhausts that had a tapered opening. It probably started at about 2 1/4 and ended up at 2 3/4 over a foot or so of length.

F%$#in' loud, though!!
BlitZ
13-01-2007, 07:41 PM
exhaust ...ahhah wtf???

do that for your intake...ill be 'fully sick'

ahaha

like the spoon muffler... and some aftermarket ones...

is there a reason for the tappering:confused:
BlitZ
13-01-2007, 07:42 PM
Some of the F3 teams, most notably TOMS, used to run "megaphone" exhausts that had a tapered opening. It probably started at about 2 1/4 and ended up at 2 3/4 over a foot or so of length.

F%$#in' loud, though!!

very interesting.. however is it muffled at all? or is it str8
fatboyz39
13-01-2007, 09:49 PM
ahaha

like the spoon muffler... and some aftermarket ones...

is there a reason for the tappering:confused:

didn't mean it that way bro.....
egSi
14-01-2007, 09:26 AM
im pretty sure on a street car the tip has no big impact on exhaust note

what exhaust do u have atm? spec II or something?
EfiOz
14-01-2007, 12:55 PM
very interesting.. however is it muffled at all? or is it str8

No mufflers but we ran straight 25/8 and 23/4 pipes and they were relatively quite (still 94db trackside).
EG5[KRT]
14-01-2007, 10:01 PM
i dunno about teh spoon exhaust but i c on motorbikes they have that same taper ur talking about.. so i think they must do something for noise.. coz i see on alot of yoshimura exhausts on motorbikes.
BlitZ
15-01-2007, 09:55 AM
im pretty sure on a street car the tip has no big impact on exhaust note

what exhaust do u have atm? spec II or something?

haahaha GF bought me a welder for christmas...
I welded myself a straight pipe - no muffler..

Its deadly loud.. but it also has a crazy bububububububu at about 3k... I want to try and tune it... ehhehe:thumbsup:
BlitZ
15-01-2007, 09:57 AM
;1034478']i dunno about teh spoon exhaust but i c on motorbikes they have that same taper ur talking about.. so i think they must do something for noise.. coz i see on alot of yoshimura exhausts on motorbikes.

yeah .. eheheh thats why i kinda want to try it.. I just want some technical info before fplking out some money to to an exhuasyt shop to open the mounth for me