Exhaust Rear Silencer

[wirdy]

I've noticed that the back box sits at an angle and whilst I had my car on the ramps, shortly after purchase, I noticed a small hole at the bottom of the front face plate of this recently-replaced item.

I duly sealed this with a bit of exhaust putty, however this stayed in place for about a week!

Since then, I've ignored it but have noticed that on short runs, this hole allows water to drain from the lowest point of the silencer, thus preventing internal corrosion.

Is this tiny hole designed into the silencer or has it just rusted through rather conveniently on mine?

[Peter.N.]

Never noticed it on any of mine wirdy, but then they have all been diesels.

Peter.N.

[onthecut]

Hi Wirdy.

Don't know specifically about the XM, but I've seen several different boxes with a small drain hole; excellent idea, especially on the rear boxes.

Mike.

[xmexclusive]

Hi Wirdy

I think you are right. I seem to remember reading somewhere an evolution note about the introduction of a drain hole in the rear box to let the sulphuric acid drain out quickly rather than eat its way through.

Regards

XMexc