Howday folks

I've got a split forming on the top of the middle muffler.

I thought I might be able replace this myself. Any ideas how much and how hard it is?

cheers
Blake

just get a nice sports zorst like a redback or something

Don't think its possible for you to do it yourself to be honest, unless you are handy with a welder. Take the excuse to get a sports cat-back exhaust, there basically the same price as standard. People will tell you otherwise, but $250-$300 is all you need for a quality cat-back exhaust.

Ollie

Don't think its possible for you to do it yourself to be honest, unless you are handy with a welder. Take the excuse to get a sports cat-back exhaust, there basically the same price as standard. People will tell you otherwise, but $250-$300 is all you need for a quality cat-back exhaust.

Ollie

Hi Perry and Ollie

Thanks for your replies, bear with me I'm totally performance challenged. What will a cat-back exhaust do for me? Is it just the middle muffler bit or the whole thing. I'm not after a low note and I prefer the car to remain silent. What effect does a cat-back exhaust have on fuel consumption.

Ok well I guess the main idea of a cat-back sports exhaust is the sound, which is usually nice and low.....

So dunno maybe its not a good thing for you, although you could just make sure you get two large resonators that should make it quite, but have a pretty nice sound.

Yes a cat-back is the whole thing, everything back from but not including the catalytic converter, hence the name.

The exhaust may give you a very small increase in power due to better efficiency, and should also give you a very small increase in fuel consumption, though the difference is probably worth ignoring. In fact, most people like to try out the 'extra power' and hear the nice noise and hence drive the car harder, which, ends up using more fuel.

I think any difference will be in the top end of the power band though, as the engine can breath easier it may feel like it wants to rev a bit more.

Ollie

Ok well I guess the main idea of a cat-back sports exhaust is the sound, which is usually nice and low.....

So dunno maybe its not a good thing for you, although you could just make sure you get two large resonators that should make it quite, but have a pretty nice sound.

Yes a cat-back is the whole thing, everything back from but not including the catalytic converter, hence the name.

The exhaust may give you a very small increase in power due to better efficiency, and should also give you a very small increase in fuel consumption, though the difference is probably worth ignoring. In fact, most people like to try out the 'extra power' and hear the nice noise and hence drive the car harder, which, ends up using more fuel.

I think any difference will be in the top end of the power band though, as the engine can breath easier it may feel like it wants to rev a bit more.

Ollie

Ollie

Thanks for that. I doubt I could ask for a better explanation.

cheers
Blake

Ok

Just updating, I have applied Loctite muffler putty to the crack today. It requires that the surface is completely clean, and rust free. The putty goes on wet (like plaster of paris) and then initially dries with the engine idling for 15 minutes. Then it is best left for 24 hours to cure.

The crack itself exists at the top rear facing edge of the middle muffler, 12 o'clock above the pipe. It seems that this is a tension point given the way the muffler system is suspended.

Matierals: Car ramps or stands,Course sandpaper, Water, Loctite muffler puttey P/N MP2 (Asbestos free)
Cost: $8.50
Time: 20 minutes


I will let you all know in a day or two if it works.

cheers
Blake

Cool, im sure that will work, although I dont know for how long. I had the same problem with a crack opening along the weld of the exhaust pipe in my old laser, and used the putty stuff. Worked well, for a few days, and then a new crack turned up. Fixed that too, however another one turned up about a week later.

I think the exhaust was just really old and rusting out, and everytime I fixed it the pressure would just come out somewhere else so I just got a new cat-back exhaust. I think they said my rear muffler has also started to 'collapse' which could have been causing a bit more extra pressure in the system, although not much or I would have noticed a big power loss.

But you might be lucky in that it was juts a weak point and you will be good for a long time. Dont be too dissapointed if a new comes up again though, but hey for the price of putty its worth doing, and beign in the muffler the problem might be isolated.

Ollie

Yes Ollie

That could well happen to me too. I'll let you know how we go, as I said above it seems to be a stress point given the way the exhaust system is suspended. Wouldn't be at all surprised if your expeirence repeats itself in my case.

Soon see hey?

Howday folks

I've got a split forming on the top of the middle muffler.

I thought I might be able replace this myself. Any ideas how much and how hard it is?

cheers
Blake

If you get under your car and look at the exhaust from motor to final muffler, you'll notice it separates in a number of places (at the flanges): engine pipes, cat, cat all the way to rear muffler, rear muffler.

The pipe between your cat and rear muffler flange, often called the front muffler, is what needs to be replaced. Four 17mm bolts, two gaskets, and few rubber exhaust hangers to prise off, and your done. If you know someone with a welder, you can remove it and weld closed the crack, but I'd personally replace it. Mitsubishi still stock that particular part.

It's all fixed. Muffler putty has worked a treat. It sets quite hard so it looks like it will last for a long while.

Cheers