Hi there guys,

 

I purchased a mongoose for the zed and ftted it last week. Since then I have done about 300 miles.(mostly motorway) Just cleaned the car and gave the exhaust a wipe off. No real dirt just a bit of black dust. What was left was some pretty heavy scoring on the inside of the rolled lip, many scratches spireling outwards. Im pretty sure they were not there when I fitted it. The scratches are pressent on all pipes. Never seen this before. Engine is pretty much stock with about 90K, seems in good condition, Never seems to burn oil, the odd rattle when its cold. Sometimes smokes very lightly on the drivers side but that only happens very rarely. Sounds sweet as a nut when warm.

 

Has anyone else noticed these markings, or can think of a reason why. Any help would be much appreciated!

 

 

Andy

Had a Mongoose fitted for 3 years,no marks on mine:confused: do you have any pics Andy?

Not subscribed yet, just sorting that at at the moment. dont think I can attach pictures yet.

Originally posted by Andy_Mclean

Hi there guys,

 

I purchased a mongoose for the zed and ftted it last week. Since then I have done about 300 miles.(mostly motorway) Just cleaned the car and gave the exhaust a wipe off. No real dirt just a bit of black dust. What was left was some pretty heavy scoring on the inside of the rolled lip, many scratches spireling outwards. Im pretty sure they were not there when I fitted it. The scratches are pressent on all pipes. Never seen this before. Engine is pretty much stock with about 90K, seems in good condition, Never seems to burn oil, the odd rattle when its cold. Sometimes smokes very lightly on the drivers side but that only happens very rarely. Sounds sweet as a nut when warm.

 

Has anyone else noticed these markings, or can think of a reason why. Any help would be much appreciated!

 

 

Andy

 

 

Do you mean scratches on the inside of the tail pipes?

 

I have them, I think its just where the metal has been rolled. You dont notice them at first because they are clean, but then the engine soot gets stuck in the scratches you can see them.

 

If you look closely you can see slightly darker lines on the inside of the pipe. These are little scores, which you cant really see when they are very clean but stand out when dirt gets stuck in it.

 

Is this what you mean?

 

Stuart

Hi stuart.

 

Hard to see on your picture, but yes I meant on the very end of the pipe where the steel is rolled back. Mine looks a little heavier than yours. It could well be a by-product of the rolling opperation where the metal is splitting from the forming, just failed to notice it at first. Poor quality if it is. Had quite a few exhaust and never seen this.

 

Hopefully its not the pistons melting down and being fired out the back at high volicity lol. Going to dress it out anyway. If it re-appears i'll start worring.

 

Thanks

 

Andy

I have the same on mine Stu; well last time it was clean enough to notice them anyway :rolleyes: