Outer Limits 4x4 Board

im chasing some stainless butt weld bends and a v band exhaust flange im trying to find out where the best place to buy them in se qld they dont need to be high quality or polished as its only for an exhaust[/list]

not sure about v bands but if you get in touch with a stainless place (should be one in the phone book) and they don't know about v bands ask them about tri-clover or ladish fittings - these are basically a v-band flange with an o-ring groove machined in the mating face, i realise you can't use an o-ring but you may be able to adapt a v-band or tri-clover clamp to hold the faces against each other ensuring a neat fit. - or you could possibly use a BSM - milk fitting plain liner, its similar to the triclover but a fair bit thicker and no o-ring groove (designed to have a bsm nut slid over the back of it and screwed onto a bsm male thread (which would have its own o-ring)) the bsm liner would possibly have to be turned down a fraction to fit the v-band ring on...

Any stainless shop that supplies food production places - dairies, should be able to get everything you need.

good luck.

food grade stainless ( 304) is no good for exhausts nor is 316 i forget the number of exhaust grade look for atlas specialty metals or midway they are both aus wide they will tell you what you need if not a performance exhaust place

ssfabricator wrote:food grade stainless ( 304) is no good for exhausts nor is 316 i forget the number of exhaust grade look for atlas specialty metals or midway they are both aus wide they will tell you what you need if not a performance exhaust place

Grade 321 is the best but it's pretty expensive then you go up to Inconel that's what the F1 teams use and that's a liiiiiitttttle more expensive again.
Regards Andrew.

ssfabricator wrote:food grade stainless ( 304) is no good for exhausts nor is 316 i forget the number of exhaust grade look for atlas specialty metals or midway they are both aus wide they will tell you what you need if not a performance exhaust place

Whats the problem with using 304 or 316? I realise that when some stainless is heated over about 420c the carbon and chromium can combine (chromium carbide) and the stainless loses some of its corrosion resistance. But if you had a heap of 304/316 for free would there be any major dramas in using it? - i'm talking diesel exhausts, not racecars! or turbo manifolds for that matter.

Site here seems to support my theory kind of

http://www.burnsstainless.com/TechArtic ... ticle.html

Patroler wrote: Whats the problem with using 304 or 316? I realise that when some stainless is heated over about 420c the carbon and chromium can combine (chromium carbide) and the stainless loses some of its corrosion resistance. But if you had a heap of 304/316 for free would there be any major dramas in using it? - i'm talking diesel exhausts, not racecars! or turbo manifolds for that matter.
Site here seems to support my theory kind of
http://www.burnsstainless.com/TechArtic ... ticle.html

Patroler, if you can get it cheaply then use it by all means, particularly if it's a diesel application. I would be a bit more concerned if you were using it in either a header or turbo manifold construction but certainly downstream of a turbo I couldn't see any problems.
Regards Andrew.

Cool thanks mate, just wasn't sure if there was any issues or anything i didn't think of!