Auger style mufflers
Race Director
Joined: May 2006
Posts: 18,710
Likes: 2,574
If you mean the generic short augers, how are you going to prevent them from spinning in the pipe?
They have maybe 4 blades at most, look at the number of blades on the STS and they are still pretty loud.
https://www.spiralturbobaffles.com/c...e-application/
They have maybe 4 blades at most, look at the number of blades on the STS and they are still pretty loud.
https://www.spiralturbobaffles.com/c...e-application/
Race Director
Joined: Mar 2017
Posts: 11,934
Likes: 4,498
From: Virginia
I bought a Moroso spiral muffler to see if I could make it work with sidepipes. This one:
https://www.jegs.com/i/Moroso/710/94051/10002/-1
YMMV, but the OD of the muffler exactly matched the OD of my 4" sidepipes, so there was no way of fitting them inside as inserts. I may experiment further and use them to weld up a sidepipe extension that replaces the 4" tube.
If you can find mufflers that fit inside the 4" pipe, please let us know!
https://www.jegs.com/i/Moroso/710/94051/10002/-1
YMMV, but the OD of the muffler exactly matched the OD of my 4" sidepipes, so there was no way of fitting them inside as inserts. I may experiment further and use them to weld up a sidepipe extension that replaces the 4" tube.
If you can find mufflers that fit inside the 4" pipe, please let us know!
Racer
Joined: Aug 2009
Posts: 363
Likes: 72
From: Somers New York
I bought a set of STS inserts for my 79 with Hooker side pipes with 2.5 inserts( the loudest one they make). I really didn't like the sound compared to the Hooker inserts. In my opinion they sounded too "truck like". I took them out and reinstalled the Hookers.
Melting Slicks
Joined: Jun 2001
Posts: 2,265
Likes: 547
I used the speedway augers in a 2" header tube 3" collecter system and 3" mandrel bent x-pipe dumping in front of the differential . In my drag car in my avatar. They were junk lost 4 tenths and 5 mph in the 1/8 mile. Pull them out and it was like a different car. With hundreds of passes logged for bracket racing, engine was 454 shiffting about 6250 rpm. By the time, I made the 3rd run they were pulled out, and trash canned. I really thought they would work, just had the before and after data to prove me wrong. It was quieter with them, if you are space challenged , if you don't mind the power loss. Ron B.
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Drifting
Joined: Dec 2011
Posts: 1,743
Likes: 289
From: Chardon Ohio
I would think the 'auger' type inserts would have quite a lot of back pressure. The STS baffles are a spiral/auger type also but have cuts, or breaks in the spiral which I would think would flow a lot better. I had the STS baffles and they were nice but loud. Sort of raspy.
