A question regarding mufflers that should never have to be asked
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Senior Member
Joined: May 2000
Posts: 488
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From: Bristol, WI
A question regarding mufflers that should never have to be asked
A few months ago I had my stock muffler cut off and ran straight pipes for about a month or so. Once I got sick of the sound (which wasn't very long) I went back and had the stock muffler put back on. Ever since that time I have had the most annoying high pitched whistle when I am in the boost hard and high rpms. The whistle is so loud if the passenger side windown is down it is almost deafening. At first I believed it to be a hole in the exhaust system but after checking it myself and having a muffler shop do it as well none were found. My question is how could I tell if my muffler had been put on backwards? I know it sounds crazy but that is one of the only things I can figure could be wrong. Thanks for the help.
Member
Joined: Jan 2002
Posts: 96
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From: San Marcos, Texas
Snake,
The (original) outlet end of the muffler would have the hanger bracket welded to it at the top.
Also, we split one open and I'm not sure that it would really matter which way it goes. The pipes enter from either end and go all the way through and open into a common chamber. It then empties through holes in a baffle and into the center chamber where the pipes are perforated. Then flows out though the other pipes. It would work either direction except maybe that the perforations are not clean holes but are stamped. Could be that the flow over the perforations is causing a whistle.
I actually have a modified stock muffler on mine and it sounds good. I cut a 11/2" access hole with a hole saw in the back end of the muffler. With my Lincoln set on 200 and a 6011 rod I cut about a 2" hole in both outlet pipes within the rear chamber. This bypasses a lot of the internal baffeling. I plugged the access hole with some stainless washers and toggle bolt. It's pretty docile at low rpms. Above 3000 it's awesome.
DW
The (original) outlet end of the muffler would have the hanger bracket welded to it at the top.
Also, we split one open and I'm not sure that it would really matter which way it goes. The pipes enter from either end and go all the way through and open into a common chamber. It then empties through holes in a baffle and into the center chamber where the pipes are perforated. Then flows out though the other pipes. It would work either direction except maybe that the perforations are not clean holes but are stamped. Could be that the flow over the perforations is causing a whistle.
I actually have a modified stock muffler on mine and it sounds good. I cut a 11/2" access hole with a hole saw in the back end of the muffler. With my Lincoln set on 200 and a 6011 rod I cut about a 2" hole in both outlet pipes within the rear chamber. This bypasses a lot of the internal baffeling. I plugged the access hole with some stainless washers and toggle bolt. It's pretty docile at low rpms. Above 3000 it's awesome.
DW