| FAQ |
| Members List |
| Social Groups |
| Calendar |
| Search |
| Today's Posts |
|
#1
09-30-2000, 12:00 AM
|
||||
|
||||
I found this exhaust system from a truck-related BBS and was wondering if any of you guys ever seen anything like it. It "looks" like some sort of gimmick. I wonder if it would be of any performance gain on an older street car that doesnt have catalytic converters?
http://www.zummoauto.com/catback.htm
__________________
 "Life is one big smokey burnout after another." -- me |
|
#2
09-30-2000, 12:00 AM
|
||||
|
||||
|
I found this exhaust system from a truck-related BBS and was wondering if any of you guys ever seen anything like it. It "looks" like some sort of gimmick. I wonder if it would be of any performance gain on an older street car that doesnt have catalytic converters?
http://www.zummoauto.com/catback.htm
__________________
"Life is one big smokey burnout after another." -- me |
|
#3
10-01-2000, 01:44 AM
|
|||
|
|||
|
never heard of it, looks like a motorcycle muffler welded in to the exhaust. mike
__________________
so many pontiacs, so little time.................. moderator is a glorified word for an unappreciated prick.................. "Only two things are infinite, the universe and human stupidity, and I'm not sure about the former." --Albert Einstein "There is no such thing as a good tax." "We contend that for a nation to tax itself into prosperity is like a man standing in a bucket and trying to lift himself up by the handle." - Winston Churchill |
|
#4
10-01-2000, 09:11 AM
|
||||
|
||||
|
Reminds me of some of the product descriptions I have seen in the J.C. Whittney catalogs.
|
|
#5
10-02-2000, 01:11 AM
|
||||
|
||||
|
I would venture to say that it is a reversion chamber or a resonance chamber.Both have been proven to work in increasing torque by helping to increase scavenging in full exh. systems.I use a similar idea on open headers by step tuning into alarger pipe with a cross-over that has an expansion chamber.
------------------ Will a peice of bubblegum work? |
|
#6
10-03-2000, 08:34 PM
|
||||
|
||||
|
I thought it looked like a motorcycle muffler too. I cant tell which end of it is the inlet though.
Copying from the motorcycle exhaust, I have a set of megaphones that I made for my headers, hoping for a performance gain. I thought they would be really loud but they were actually quieter than the open headers.
__________________
"Life is one big smokey burnout after another." -- me |
|
#7
10-08-2000, 05:18 PM
|
||||
|
||||
|
Looks to me like 2-stroke motorcycle technology as applied to a 4-stroke auto. It's been proven that stepped headers and/or exhaust improves torque/power over a given "single diameter" pipe on a 4-stroke, I'm not so sure that expansion chamber technology will work on a 4-stroke like it does on a 2-stroke.
__________________
Just a blind squirrel looking for a nut. |
| Reply |
|
|
The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.
Linear Mode
