Supertrapp Muffler?
06-01-04, 02:34 AM
#1
Full Member
Thread Starter
Join Date: Jan 2002
Location: Port Orchard, Washington
Posts: 117
Likes: 0
Received 0 Likes
on
0 Posts
Supertrapp Muffler?
Has anyone tried to put a Supertrapp 2" in, 4" out muffler on a first gen?(page 16 Summet racing catalog) I have a Kelmark GT with a '87 TurboII in it and it has a Racing Beat turbo premuffler and a Supertrapp 3" in, 5" out muffler, 3" stainless steel tubing and it sounds real nice.
I haven't looked, but is the exhaust pipe on a '85 12A 2" or 2 and a half " With these its very easy to go from full muffler to open pipe.
I haven't looked, but is the exhaust pipe on a '85 12A 2" or 2 and a half " With these its very easy to go from full muffler to open pipe.
06-01-04, 02:41 AM
#2
Admitted Sevenaholic
Join Date: Feb 2001
Location: Ashland, OH
Posts: 1,910
Likes: 0
Received 0 Likes
on
0 Posts
I had one on my 79 years and years ago, didn't last long, it was so loud I could only drive it during thunderstorms so as to not atract to much attention.
Sounded like a chainsaw running nitromethane at 52,000RPM
this was with a RB header and straitpipe.
Sounded like a chainsaw running nitromethane at 52,000RPM
this was with a RB header and straitpipe.
06-01-04, 02:43 AM
#3
The rotary baja on my webpage has a Supertrapp. The difference from empty megaphone to filled with the silent sport (that pillow thing hehe) and mesh tube wasn't a very big reduction in noise, but the addition of the discs produced a major quieting.
The Supertrapp guts were actually installed into an RB 2" in, 4" out megaphone. It was hard to push it in, but it does fit. That's all I can tell you.
The Supertrapp guts were actually installed into an RB 2" in, 4" out megaphone. It was hard to push it in, but it does fit. That's all I can tell you.
06-01-04, 12:22 PM
#4
Supertrapps as a rear muffler don't quiet very well. I have a 3" in 5" disc supertrapp and the only way it gets reasonably streetable is with only 4 discs which chokes the engine.
I think if you REALLY want good flow and good noise reduction, use two supertrapps. 2" in and 3" or 4" discs. With an X pipe before them so you'll get exhaust scavenging.
I think if you REALLY want good flow and good noise reduction, use two supertrapps. 2" in and 3" or 4" discs. With an X pipe before them so you'll get exhaust scavenging.
06-01-04, 08:53 PM
#5
I did some research into Supertrapps and they're a real good news / bad news affair:
The good news is that they're tuneable. If your car is too loud (either for the cops or the racetrack dB meter), you can easily correct it. They also look cool.
The bad news is that they create more backpressure per dB noise reduction than almost any other performance muffler. The added backpressure can be good in rare circumstances (so some people have told me), but backpressure is generally a bad thing that should be avoided like country music.
The good news is that they're tuneable. If your car is too loud (either for the cops or the racetrack dB meter), you can easily correct it. They also look cool.
The bad news is that they create more backpressure per dB noise reduction than almost any other performance muffler. The added backpressure can be good in rare circumstances (so some people have told me), but backpressure is generally a bad thing that should be avoided like country music.
Thread
Thread Starter
Forum
Replies
Last Post
Shainiac
Single Turbo RX-7's
12
07-17-19 02:20 PM
