TrophyJem
|
| posted on 19/3/14 at 07:53 AM |
|
|
Bending exhaust pipe
I picked up a Caterham manifold for my duratec install but I'm going to have to put a small bend (5-10 degrees) in the pipes to make it clear
the chassis rail.
Is there a diy way of bending these?
Pipes are individual so hopefully that makes life a little easier.
|
|
|
|
|
Thatcher
|
| posted on 19/3/14 at 09:23 AM |
|
|
If you can block both ends of the tube/tubes, fill the with dry sand and with a blow torch get them cherry red and pull push them into a new angle
just over do it a little as they might spring back a little.
Good luck
Tony.....
|
|
|
TrophyJem
|
| posted on 8/4/14 at 12:55 PM |
|
|
Well I'm sort of half getting there.
I've managed to bend 3 of my pipes using long planks and blocks of wood as they only needed an existing bend easing, but the fourth and final
one is a problem.
It needs bending between the tape that you can see in the picture below and the flange that fixes to the engine. From a bit of research on the web it
seems to suggest that a mandrel bender is the only way else I will kink the tube. I've practised with sand filled pieces of pipe and all types
of formers, but it just crushes.
I've contacted several companies that say they have mandrel bend machines, but it appears this pipe will not fit on their machines as one end
needs to be straight. I've also contacted specialist exhaust companies, but they tend not to have bending facilities at all.
So before I give it up as a bad job and send them off for scrap are there any last suggestions?
Cheers
|
|
|
daveb666
|
| posted on 8/4/14 at 01:11 PM |
|
|
How close is it to the chassis? Could be simpler to chop a notch out of the chassis and plate it?
2007bc Photography - Commercial and Wedding Photographer based in West Yorkshire
http://www.2007bc.co.uk / http://www.huddersfieldcommercialphotographer.co.uk
|
|
|
davidimurray
|
| posted on 8/4/14 at 01:14 PM |
|
|
Nooo - don't scrap - send them my way if you don't want them 
Two thoughts, first is how about heating one side of the bends to a nice cherry red and then letting them cool, you may find the bends will contract a
bit.
Second option is to cut off the pipe at the manifold plate you can then get to it to striaghten the bends out, then get it welded back to the plate.
Gallery 1 http://www.facebook.com/media/set/?set=a.116893465324.130778.601005324
Gallery 2 http://www.facebook.com/media/set/?set=a.245243755324.181913.601005324&l=a9831a9319
Gallery 3 http://www.facebook.com/media/set/?set=a.440671625324.232627.601005324&l=3f0d42c523
Gallery 4 http://www.facebook.com/media/set/?set=a.490098255324.297598.601005324&l=efb083b7df
Gallery 5 http://www.facebook.com/media/set/?set=a.10150244028550325.366987.601005324&l=583fd5cd3a
Gallery 6 http://www.facebook.com/media/set/?set=a.10150550640070325.430417.601005324&type=3&l=fe779b358c
Duratec Engine Swap https://www.facebook.com/media/set/?set=a.10152527759580325.1073741828.601005324&type=1&l=40aae5e72f " target="_blank"> https://www.facebook.com/media/set/?set=a.10152527759580325.1073741828.601005324&type=1&l=40aae5e72f
|
|
|
Paul Turner
|
| posted on 8/4/14 at 01:16 PM |
|
|
quote:
Originally posted by TrophyJem
So before I give it up as a bad job and send them off for scrap are there any last suggestions?
Get someone to cut and weld it. very few pipes are actually made out of one piece of pipe, mine have been on the car for over 12 years now with no
issues.
|
|
|
TrophyJem
|
| posted on 8/4/14 at 01:36 PM |
|
|
quote:
Originally posted by Paul Turner
Get someone to cut and weld it. very few pipes are actually made out of one piece of pipe, mine have been on the car for over 12 years now with no
issues.
I did wonder if I could get the flange cut off and re-welded on at a slightly different angle. Or alternatively get the top bend removed all together
and a new, slightly sharper, bend welded in.
I guess its where to get that done? Any suggestions?
I do also need to get another mod done anyway as they poke too far out of the side of the car, so I need an inch or so removed from all 4 pipes.
Then I need a collector....
|
|
|
mark chandler
|
| posted on 8/4/14 at 01:56 PM |
|
|
I would chop off on the flange as well, trim and fit.
You just need someone with a TIG to weld up, happy to help if you send it to me.
It could also be MIG welded but will rust on the flange unless the welder has stainless wire and argon.
|
|
|
PhillipM
|
| posted on 8/4/14 at 08:56 PM |
|
|
That might just about go in our rotary bender, bit of a roadtrip though.
|
|
|
TrophyJem
|
| posted on 9/4/14 at 06:36 AM |
|
|
Cheers for the offers guys but I would prefer to try and get it done locally if I can.
|
|
|
MikeRJ
|
| posted on 9/4/14 at 09:31 AM |
|
|
I've just modified a stainless link pipe for my bike which I had to add several bends to. I bought some suitable stainless bends (actually a
couple of s/h link pipes from eBay), spent several hours cutting the bends up to make the correct shape and then tacked it together with some
stainless wire in my MIG. A local engineering company then TIGed it for me and made a lovely job.
|
|
|
blakep82
|
| posted on 9/4/14 at 09:37 AM |
|
|
Lobster back bends?
Could that work?
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
|
|
|
wombat
|
| posted on 9/4/14 at 12:42 PM |
|
|
You could try TigArt Wisbech or possibly Icon engineering - Nick is into cars and bikes (son has an awesome Tango Mini which has featured in a few
mini magazines)
|
|
|
TrophyJem
|
| posted on 9/4/14 at 01:09 PM |
|
|
quote:
Originally posted by wombat
You could try TigArt Wisbech or possibly Icon engineering - Nick is into cars and bikes (son has an awesome Tango Mini which has featured in a few
mini magazines)
Cheers I'll give them a try
|
|
|
