Exhaust Pipe Bending

[blessed6383 0]

hi guys just an idea really i want to ave a go at making a custom exhaust myself from manifold back the weldings no problem as can do myself.

 

wondered if anyone new te down pipe degree and then the bit whichruns unde the centre of the car and banks off to the leftto join to the back box?

 

cheers

 

also any ideas on bending the pipe its self without it creasing? well be using standard steel tube for 1st one then stainless when ive got it perfect

[Batfink 201]

also any ideas on bending the pipe its self without it creasing?

 

you need a mandrel pipe bender. Probably not cheap

[blessed6383 0]

you need a mandrel pipe bender. Probably not cheap

 

 

juhad a look at a few and they arn't are they but might be worth the investment

[Cameron 16]

A mandrel bender is going to cost you hundreds of thousands of pounds, far more economical to buy in the bends that you need!

[powermandan 0]

http://www.rorty-design.com/content/sand_bending.htm

 

enjoy

[Cameron 16]

Maybe if you were an expert fabricator, but definitely not for the inexperienced!

[blessed6383 0]

A mandrel bender is going to cost you hundreds of thousands of pounds, far more economical to buy in the bends that you need!

 

are they that much cameron!!

 

think i'll wait till i win the lottery then lol

[Cameron 16]

Well unless there's some manual ones I don't know about..

 

BTB's CNC bender was £0.5 million if I remember right, and a manual hydraulic one will still set you back a fair bit.

[Rippthrough 98]

Even a cheap, second hand hydraulic exhaust-type bender'll cost you a couple of grand...

[Cameron 16]

Then you need space to put it, a hydraulic pump, and 3-phase supply.

[Rippthrough 98]

Then you need space to put it, a hydraulic pump, and 3-phase supply.

 

You buy it, I'll sort that out

[Cameron 16]

Err.. pass?

[joe1joe 3]

well here is what i have done REMOVED material on the bend and re-welded it. i used stainless wire aswell. you need to ensure you do not get any welding wire left in the pipe!!

i feel its almost better than buying the bends (which i did 2 years ago using the crapy merlin pipe which seems to rot straight out!) as then there was so many welds and some of the bends were wrong any way so had to change them anyway.

 

 

Edited June 20, 2010 by joe1joe

[Cameron 16]

It's called lobster tailing and it works pretty well if you're good with a grinder, just got to be careful on the amount of penetration.

[joe1joe 3]

i used a plasma cutter

not long bought one

 

when welding you also need to be carfull with how you go about it to ensure the mig wire does not go into the exhaust as i have seen people dong it pretty bad before!

 

it was the first time i have used the stainless wire and as expected it welds like normal.......

[Guest boydgti]

would be easier to tig weld that.Get it tacked in place with the mig then tig it.

[joe1joe 3]

yes it would be easyer and neater but i havnt got one! and i like things to be home made

Edited June 21, 2010 by joe1joe

[Cameron 16]

TIG is only any good if you can do it though! If you're rubbish at welding you're going to have a very hard time.

 

Anyone can MIG something like that, just set the amps high and run a series of tacks if you don't have the talent / experience to MIG nicely.

[joe1joe 3]

the welds were more constant, and was pretty good i have done tig welding with mild steel which seems easy untill you have a go with the rod

Edited June 22, 2010 by joe1joe

[Cameron 16]

Mild steel is probably one of the more hassly things to weld as it spits and the pool wanders. Stainless is where it's at.

[welshpug 1,661]

I'd just find the cash to either buy a system from someone like Miles who does a proven 205 exhaust system that's not noisy, or any of the aftermarket exhaust builders out there and make sure they do it top your spec.