Muffler Question, Quiet One

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Apr 24, 2002 | 07:13 PM

tealboy1

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Muffler Question, Quiet One

Hello,

I am looking for comments on purchasing a quiet muffler and advice on installing. I have been asking lots of questions b/c I am going to be performing a lot of work this weekend. The truck is not conveniently located (nor street legal), so i need to do as much as possible this weekend.

Anyway, I have a hole in the muffler and want to replace it with a new one. I called Autozone and was surprised how ridiculously cheap it was. They said $16 for their lifetime warrantied Defender. Is this thing a piece of junk?

Also, they said the pipes come in 2, 2 1/4 and 2 1/2 inches and I need to tell them which one. Is this true? It would seem like the six cylinder 1977 trucks would all have the same diameter pipe.

Anyone know what size mine shoud be? Any installation advice? I have never changed a muffler but it looks easy. Two U bolts on each end and slide it off. I am sure it isn't this easy.

Pls comment.

thanks

Apr 24, 2002 | 10:59 PM

DrkPhanstm

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Joined: Oct 2001

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Muffler Question, Quiet One

cant speak about the quality of the muffler, never used them.

pipe size is an easy one.. crawl under the truck with a ruler and measure it! I dont know what the stock specs are for pipe sizes, sorry

as for replacing the muffler.... ya in theory thats all there is to it, but expect the pipes to be rusted together and very hard to seperate! I'd soak the bolts and joints in penetrating fluid at least overnight

Apr 25, 2002 | 01:31 AM

cypress_303

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Joined: Feb 2001

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From: Canada

Muffler Question, Quiet One

dude man those pipes are going to be a joke to deal with, just pump the hole with muffler cement and hope for the best, the crap holds surprisinly well. the stock pipe should be a 2 inch. my '79 was hooped, and with a glass pack on mine it sounds really good, a deep rubly tone (not a cheap *** glass pack though)

Apr 25, 2002 | 09:23 AM

tumbleweedd

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Joined: Apr 2002

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From: Wisconsin

Muffler Question, Quiet One

its not that easy the u bolts crimp the two pipes together to take them apart you either have4 to cut with a hacksaw or heat up red hot with a torch have done both to use the hacksaw method cut allmost though the outer pipe and use a chisel to kind of peal it off the other pipe underneath

Apr 27, 2002 | 07:52 AM

shotgun

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Joined: Feb 2000

Posts: 390

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From: South East Alabama

Muffler Question, Quiet One

Yea, that pipe would need a hack saw. If you could borrow an electric sawz-all that would get the job done in about 30 seconds with no sweat involved. I would measure the pipe diameter anyway. If your luck is like mine, someone has changed the pipe size along the way.

Chris

Apr 27, 2002 | 09:21 AM

GammaDriver

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From: Southeast FLA

Muffler Question, Quiet One

I'm with these guys - I'm willing to bet it won't be that easy, and your probable end-result will be to cut it or cut the bolts past the catalytic and replace everything from there, back.

I'm not sure about the muffler either, but is this a universal muffler (these are normally cheap) or is it a direct fit piece for your application?

Apr 27, 2002 | 03:25 PM

tealboy1

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Muffler Question, Quiet One

Well, it turned out to be pretty easy afterall. The new pipe was a fair amount longer, so i simply cut the pipe on each end and removed the old one. Then slide the new one on and clamped it down. It went well except the back section was slightly smaller in diameter than the front and i got a little exhaust leak. I tried to clamp down tightly but it did not work, so i took the cloth muffler patch kit and wrapped many times. It is the kit that hardens like a cast on a broken arm. I have since learned I could have purchased a sleeve that would have resolved the problem, but i think this will work just fine for my purposes.