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Replace the whole exhaust system; Advice Needed
Topic Started: Dec 27 2013, 08:24 PM (1,735 Views)
chapelhilldave
New Member
[ *  * ]
I just got my Metro Engine and Transmission rebuilt, my muffler seems to have a small leak, and the exhaust manifold and resonator look pretty gross and crust as well. I live in the south so I don't mean salt rusty, just no where near new, the car may have 250K on the body. With all the money I spent on the new engine, am I wasting it if I don't do new work on the exhaust set-up? Not knowing what the mileage is, should I replace the muffler, cat, etc. piecemeal when I can tell their is something wrong with it, or is there money to be saved if I pay a local shop to do it all at once, manifold to tail pipe? I know nothing about exhaust other than the names of the parts, so I'm way out of my element. Will a new cat or muffler or pipes improve my mpg's or get crud out of the engine better? Thoughts from you pros is gratefully excepted. This is my first metro and I want to tread her right without wasting my limited funds. :hmm
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patrickbruce
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average teenage gearhead

why'd you rebuild the motor? burning oil? If so, it would be beneficial to replace at least the cat.... I'd look into Mullet's setup for the turbo muffler mod that he did to his 98 hatch
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Johnny Mullet
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Fear the Mullet

Walker Exhaust. Replace it all (cat, resonator pipe, muffler) if you want the car quiet. You can go cheap with Bosal exhaust, but raspy, noisy and poor fit is what you will find. Replacing the stock resonator with a small Thrush Turbo muffler will make it more quiet unless you do away with the muffler and go for the classic mellow tone. Doing away with the rear muffler with a turbo muffler in the resonator position adds an awesome sound and leaves the outlet of the exhaust system up to you.
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perfesser
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Elite Member - Former Metro owner

Johnny Mullet
Dec 27 2013, 08:44 PM
... Doing away with the rear muffler with a turbo muffler in the resonator position adds an awesome sound and leaves the outlet of the exhaust system up to you.
Two words - "side pipes"!!! :O :D :banana :banana
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Rondawg
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Howdy Neighbor....I'm in Hillsborough NC. My opinion (for what its worth) You said: "my muffler seems to have a small leak, and the exhaust manifold and resonator look pretty gross and crust as well". I say run it till the leaky muffler is
completey shot! With the as you said "limited funds" (like all of us these days) why put any money into the exhaust until you have to? I don't see how a leaky exhaust will hurt the motor in any way. Running a straight pipe with no cat, no muffler, no backpressure would be LOUD but prolly be the best for your motor and mpg. However living in the P.R.O.C.H. (Peoples Republic of Chapel Hill) it would not be a good idea!

I'm curious....where did ya get the engine work done??
Edited by Rondawg, Dec 27 2013, 09:56 PM.
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rjsdotorg
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R E Member

I bought a back half at a junk yard for ~$30 in very good condition, obviously had been replaced recently with a dealer part.
BTW, you can remove the cat, spray in cleaner/degreaser and back flush with water. Mine blew a bunch of crap out, and passed CA smog.
Edited by rjsdotorg, Dec 27 2013, 10:01 PM.
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Stiffchezze
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Sir Metrologist

Having an old exhaust, as long as there is no restrictions, will have no effect on your motor. But if you just want to replace some parts, here is a old post I put together a little ways back. Hope it helps. :thumb
Stiffchezze
Jun 30 2013, 10:32 AM
Lets get you set up. :hmm
Installs with IIRC a 14mm socket (maybe one or two more). That's it, no welding.
This is an absolutely complete exhaust system from the exhaust manifold back. You may not need everything. From your pics the only part I can see that HAS to be replaced is the resonator assembly. I'm betting the others do too. ^o)
From the top: (all links)
(1) Walker Exhaust Gasket Part No. 31360 $8.99
(1) MagnaFlow Direct Fit Catalytic Converter, Stainless Steel, Overall Length - 49 in. Part No. 23654 $134.99
(1) Walker Exhaust Gasket Part No. 31320 $4.49
(1) Walker Resonator Assembly Part No. 46928 $71.99
(1) Rol Exhaust 1-1/2" Heavy-Duty Muffler Clamp Part No. 517112 $2.59
(1) Walker Quiet-Flow SS Stainless Steel Direct-Fit Muffler Part No. 21197 $85.99
You may also need:
(4) Bosal Exhaust Products Part No. 255-381 $4.99
(2) Bosal Exhaust Products Part No. 251-807 $3.99
(2) Bosal Exhaust Products Part No. 258-942 $14.99
Total price : $366.96
Here's were it gets fun. Apply a code, this one is a good one. (ES123) And well, I'll let you figure it out! :evillol
You should be around $275 after it's all done. Less if you don't need to replace all the parts.
:thumb


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Freeman
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The Family Man

I remember my OEM muffler and exhaust in my Honda had started to rust and you could head the metal bits inside jingling. So I replaced the whole thing from the cat back. I took it to a shop and they installed the flowmaster muffler I had ($70) and put in 2.25" pipe from the cat back for $110. So right at $200 I had it installed. You could probably get a half decent universal cat for a fair price. I'd get one with flanges because you will have to replace it sooner or later.

Should be able to get it done in the same price range if you opt for smaller pipe, 1.5" is more than enough I think, and try and shop around for the install.
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billpinsc
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When I got mine it was loud. I really liked it at first ,but after a few weeks it got kind of old. It was just a hole in the pipe in front of the muffler. After I repaired it I was a lot happier with a stock quiet sound.
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Freeman
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The Family Man

billpinsc
Dec 31 2013, 12:16 PM
When I got mine it was loud. I really liked it at first ,but after a few weeks it got kind of old. It was just a hole in the pipe in front of the muffler. After I repaired it I was a lot happier with a stock quiet sound.
I am much more happy with driving my Metro. All I hear is the rocks hitting the floor board.

My Honda is all... vruh vruh vruh vrrrRRRRRROOOOOOOOOOOOMMMMMMMM EEEEEHEHHHHHHH pssssst VRRRROOOOOOOOOOOOOOM :drivin

And that's like shifting at 3k. Waking up everybody.

My baja bug is just straight piped (A stinger) and it's god awful. I coast home at night so I don't wake anyone on my street up. :x

Love my Metro B-) So quiet. Like a gosh darn ninja car
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heckling7


If you like OEM quiet get the Walker Quiet Flow muffler and resonator pipe. I was a little over $100 at a local box store for both parts, but very quiet and made of stainless steel. Walker has a cheaper muffler (FX Sound) at half the price, but its not as quiet and not made by WAlker(probably Asia) many say its ricey sounding. The Quiet Flow is made in the USA and a solid buy :thumb with a great warranty, unlike their FX one.
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pilkguns
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Advanced Member
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perfesser
Dec 27 2013, 08:58 PM
Johnny Mullet
Dec 27 2013, 08:44 PM
... Doing away with the rear muffler with a turbo muffler in the resonator position adds an awesome sound and leaves the outlet of the exhaust system up to you.
Two words - "side pipes"!!! :O :D :banana :banana
PIPE ( No s)
I have seriously been thinking about this, I have bunch of aluminum tubing, both square and round, that I have been thinking about bending to fit on the passenger side only. I have looked for pics of others that have done this to no avail.
Edited by pilkguns, Dec 31 2013, 05:24 PM.
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happydriver
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Sedan Love

pilkguns
Dec 31 2013, 05:20 PM
perfesser
Dec 27 2013, 08:58 PM
Johnny Mullet
Dec 27 2013, 08:44 PM
... Doing away with the rear muffler with a turbo muffler in the resonator position adds an awesome sound and leaves the outlet of the exhaust system up to you.
Two words - "side pipes"!!! :O :D :banana :banana
PIPE ( No s)
I have seriously been thinking about this, I have bunch of aluminum tubing, both square and round, that I have been thinking about bending to fit on the passenger side only. I have looked for pics of others that have done this to no avail.
That would be interesting to see.
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wore out
Fresh Fish
[ * ]
Stiffchezze
Dec 27 2013, 10:33 PM
Having an old exhaust, as long as there is no restrictions, will have no effect on your motor. But if you just want to replace some parts, here is a old post I put together a little ways back. Hope it helps. :thumb
Stiffchezze
Jun 30 2013, 10:32 AM
Lets get you set up. :hmm
Installs with IIRC a 14mm socket (maybe one or two more). That's it, no welding.
This is an absolutely complete exhaust system from the exhaust manifold back. You may not need everything. From your pics the only part I can see that HAS to be replaced is the resonator assembly. I'm betting the others do too. ^o)
From the top: (all links)
(1) Walker Exhaust Gasket Part No. 31360 $8.99
(1) MagnaFlow Direct Fit Catalytic Converter, Stainless Steel, Overall Length - 49 in. Part No. 23654 $134.99
(1) Walker Exhaust Gasket Part No. 31320 $4.49
(1) Walker Resonator Assembly Part No. 46928 $71.99
(1) Rol Exhaust 1-1/2" Heavy-Duty Muffler Clamp Part No. 517112 $2.59
(1) Walker Quiet-Flow SS Stainless Steel Direct-Fit Muffler Part No. 21197 $85.99
You may also need:
(4) Bosal Exhaust Products Part No. 255-381 $4.99
(2) Bosal Exhaust Products Part No. 251-807 $3.99
(2) Bosal Exhaust Products Part No. 258-942 $14.99
Total price : $366.96
Here's were it gets fun. Apply a code, this one is a good one. (ES123) And well, I'll let you figure it out! :evillol
You should be around $275 after it's all done. Less if you don't need to replace all the parts.
:thumb


I came across this forum while looking for exhaust parts for my Metro. Thanks for the list. I installed this setup on my 1999 Chevy Metro Hatchback with the 1.0. I sprayed the manifold bolts with PB Blaster before removing, used a reciprocating saw with a stainless steel cutting blade from Home Depot to remove the old unit. I put a Denso 234-468 Oxygen Sensor on the MagnaFlow, used (5) Bosal Exhaust Products Part No. 255-381 instead of (4). MagnaFlow included an Exhaust Gasket, so the only part I had left over was the Walker Exhaust Gasket Part No. 31360. After driving 1000 miles since installation, everything is working great, and mileage increased from 51.32 to 52.2 mpg. Thanks again!!!
Edited by wore out, Apr 12 2014, 04:03 PM.
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