Hay all

My mitsubishi magna had its catback replaced awhile ago probably 2 years ago looks like its rusting pritty bad. I was reading awhile back that there is some earth wire or something that connects from the car to the catback exhaust i tried looking for it today couldnt find it. I think they removed it when replacing my catback. what is this wire exactly called so i can fix this problem? I was told this wire helps stop rust.

Cheers kurt

A cat back exhaust is to replace exhaust components from the catalyctic converter to the back of the car. I assume the part that you are talking about is the muffler. in my experience I have never seen a grounding wire connected to the muffler or any other exhaust component once it leaves the engine.

To repair your rust problem, get a wire brush and remove the flaking rust. Spray it with rust prevention paint (high temperature of course.) Then patch the hole with loctite muffler putty and spray more rust protection. This is about all you can do to put a stop to it without cutting and welding. If anyone has any better ideas then please feel free to correct me.

A cat back exhaust is to replace exhaust components from the catalyctic converter to the back of the car. I assume the part that you are talking about is the muffler. in my experience I have never seen a grounding wire connected to the muffler or any other exhaust component once it leaves the engine. A wire is simply more metal to rust away. There is no such thing as a wire to prevent rust.

To repair your rust problem, get a wire brush and remove the flaking rust. Spray it with rust prevention paint (high temperature of course.) Then patch the hole with loctite muffler putty and spray more rust protection. This is about all you can do to put a stop to it without cutting and welding. If anyone has any better ideas then please feel free to correct me.

The wire is there and is grounded to the car, and provides a small negative charge to the exhaust system. This prevents rust from starting to develop through electrolysis

Hey hey hey. There you go. You learn something new every day.

Is the cat and muffler rusty or the pipe in between.? It's normal for pipe to rusty as its steel.

Grounding wire to the exhaust sounds interesting. The whole exhaust system is metal. Held together by metal bolts. Bolted to your engine, which . . . Guess what. It's grounded! Woooo

Does that mean you don't need a extra grounding wire?

I've played with a few cars and haven't seen or heard about this one :-)

Mild steel tends to rust. Nothing to do with electrolysis. More heat and the wet roads it encounters in its travels. That's why stainless steel is often used for exhaust systems.

I have visions of the future... it includes "Barrys exhaust grounding kit"

I can say this wire is there its connected to the middle section. As to why it's there who knows. I just connected it back up when I replaced that section cause it rusted.

A cat back exhaust is to replace exhaust components from the catalyctic converter to the back of the car. I assume the part that you are talking about is the muffler. in my experience I have never seen a grounding wire connected to the muffler or any other exhaust component once it leaves the engine.

To repair your rust problem, get a wire brush and remove the flaking rust. Spray it with rust prevention paint (high temperature of course.) Then patch the hole with loctite muffler putty and spray more rust protection. This is about all you can do to put a stop to it without cutting and welding. If anyone has any better ideas then please feel free to correct me.

if it doesent affect structual integrity, i wouldnt worry but if it does, try to fix it

also if you want to go High Tech with the rust on the exhaust and on the body of the car, there is a thing that you can get that sends a small electrical charge to prevent buildup

if it doesent affect structual integrity, i wouldnt worry but if it does, try to fix it

also if you want to go High Tech with the rust on the exhaust and on the body of the car, there is a thing that you can get that sends a small electrical charge to prevent buildup

Why would you leave the rust there to become worse. Seriously do you read the stuff you post?
And as for your 'high tech' electric charge no rust device, read up on things before you post, these do not work and have a very similar principle to the strap attached to your exhaust that has been discussed in all the above post and originally mentioned by the OP.

Grounding wire to the exhaust sounds interesting. The whole exhaust system is metal. Held together by metal bolts. Bolted to your engine, which . . . Guess what. It's grounded! Woooo

Does that mean you don't need a extra grounding wire?

I've played with a few cars and haven't seen or heard about this one :-)

The positive charge in the exhaust system is caused by specific elements in the exhaust gas that create a positive ion charge in the exhaust. The wire is there to cancel out the positively charged exhaust and prevent rust from forming.

Further to this, the exhaust joins and flanges have a gasket between them. The grounding. connection to the engine wont be that good

^as above
electrical strap strap from each section of exhaust to the body
electricity won't flow through the rubber mounts the exhaust hangs off and may have trouble getting through gaskets, and through bolts if they start to rust or are dirty etc.
the body is connected to negative on the battery, so everything connected to the body will have a negative charge to help fight rust.

The grounding strap will help prevent rust forming via electrolysis so Dave is right.

At the end of the day its not doing to prevent all the rust from forming abrasion does a good job at that.

Why would you leave the rust there to become worse. Seriously do you read the stuff you post?
And as for your 'high tech' electric charge no rust device, read up on things before you post, these do not work and have a very similar principle to the strap attached to your exhaust that has been discussed in all the above post and originally mentioned by the OP.


Well sorry

Im just throwing an option out there
No need to chuck a mental over it

Well sorry

Im just throwing an option out there
No need to chuck a mental over it

There was no option there for any person who has any enthusiasm towards their car.
Again there was no sense to you post, just like alot of your other posts. But now I'm posting useless information into a thread so I will now stop.