Post by NightmaresRacing on Jul 17, 2009 7:24:11 GMT
its ok to use it to get the shape of an exhaust but other than that it pretty usless . use a bit then remove it without bending it to much and copy it in a hard pipe it will look better work better and last longer
I've heard the jetex stuff.. (semi flexi similar to the stuff seen in a lot of modern cars after the manifold) is not bad, and is what i'll be using as think i'll need some too.. Merlin motorsports was about cheapest online supplier I found.
primarily they are used to prevent the exhaust manifold from cracking as it takes up the movement in the engine, there are a lot of problems with certain manifolds on fiestas with this. they don't flow aswell as a normal pipe but better than a cracked manifold. When i worked in the exhaust industry we used them on most the exhausts we made for the likes of Aston Martin etc. so well worth it.
The BZP wound stuff is bloody useless. It rusts and cracks after a short while. We use Stainless convoluted stuff with a stainless wire overbraid, which lasts for years and years and doesn't fracture. Not the cheapest but it works and lasts ! However that is on boats ! I did use a short (6") piece when i made up the Sprintfire exhaust 8 years ago and it's still as fresh as the day i fitted it. You get what you pay for !
That stuff is easy to fit and is a quick fix, but as said it rusts and splits very quickly. Lasted a year on my Range Rover and about 2 months when I used it as a joining piece on my Quattro! That siad I have a piece on my Bedford CF near the back and that's still going strong after 3 years. Not so hot and not so much vibration near the back I suppose.
The stainless braided joins are better but only to take up vibration, you can't make bends.
Happiness ain't at the end of the road. Happiness is the road.
If it's in straight lengths then just get a length of tube. You can make any small bends by just cutting and welding the pipe or even get some mandrel bends for welding in from somewhere like demon tweeks, ( cheaper alternatives are probably available! ) Any good motor factors will be able to supply exhaust pipe in 2m lengths in pretty much any dia you need. I got a length when i made the exhaust for my Merc. Cost me about 16 quid !