V6 Custom Exhaust Headers ?

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MikeyBikey
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V6 Custom Exhaust Headers ?

Post by MikeyBikey » Thu Dec 06, 2018 4:42 pm

Hi all

I need to build a set of custom exhaust headers for the omega engine.

bit like this
Exhausts.jpg
Exhausts.jpg (73.24 KiB) Viewed 312 times
So thats difficult and expensive. Does anyone have experience with this stuff. Flexible stainless steel.
flexi exhaust.JPG
flexi exhaust.JPG (81.77 KiB) Viewed 312 times

as per here

https://www.ebay.co.uk/itm/T304-CUSTOM- ... rk:31:pf:0


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V6 Custom Exhaust Headers ?

Post by scimjim » Thu Dec 06, 2018 4:44 pm

Only ever used it in the workshop to get exhaust gases outside - I’m not sure it would stand up to constant fatigue cycles? Even the best OEM flexible stuff (the cross-hatched strand type stuff) doesn’t last.


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V6 Custom Exhaust Headers ?

Post by MikeyBikey » Thu Dec 06, 2018 4:57 pm

ok thanks jim, as ever, for the prompt response.

Most curvy exhaust stuff on ebay seems to be bent bits that you weld together to make the shape you want.
Bent Bit.JPG
Bent Bit.JPG (40.71 KiB) Viewed 300 times
so why don't people use pipe benders. Is stainless much more difficult ?

And blimey, posting pictures makes them very big ?


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V6 Custom Exhaust Headers ?

Post by philhoward » Thu Dec 06, 2018 5:01 pm

Have you seen the cost of a 45mn pipe bender? Exhaust tube is also thin and kinks easily.


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V6 Custom Exhaust Headers ?

Post by MikeyBikey » Thu Dec 06, 2018 5:26 pm

When I did banger racing, for the roll cage we used scaffolding and hired commercial pipe benders. worked a treat....


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V6 Custom Exhaust Headers ?

Post by Oaksey » Thu Dec 06, 2018 5:38 pm

60s jaguars use a small section of flexible pipe and they last pretty well but they're only to reduce movement and dont really act as a bend.


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V6 Custom Exhaust Headers ?

Post by reliant-reviver » Thu Dec 06, 2018 6:06 pm

Look at handrail weld elbows. Cheap as chips, easily worked and indestructible. Bit heavy and no choice of bend radius though.

https://www.dciron.co.uk/welding-elbows/


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V6 Custom Exhaust Headers ?

Post by philhoward » Thu Dec 06, 2018 9:46 pm

A half-way-house is to get tubular manifolds from something else and adapt them? Still a fair amount of cut-cut-weld-weld though.

Now you know why I went the way I did. Might have lost 10-15 bhp but so much easier.


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V6 Custom Exhaust Headers ?

Post by efi_sprintgte » Thu Dec 06, 2018 11:13 pm

I used two of those flexible pipes on JKL when she was single turbo. Came out of the turbo in 4” and then Y pieces down to two 2” pipes (because of ground clearance issues) used those to form the bend. So only about a foot from the turbo!

They were recycled from her 2.9 guise.

I always saw them as a bodge and expected them to last badly but they lasted really well (lots of surface rust however)


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V6 Custom Exhaust Headers ?

Post by Old and Slow » Fri Dec 07, 2018 10:35 am

On Oaksey's recommendation I went to our local PowerFlow franchise for my new bits - they seemed to have all the pipe bending stuff to hand; might be expensive though?


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V6 Custom Exhaust Headers ?

Post by RodH » Fri Dec 07, 2018 2:24 pm

Is this any use Mikey.
http://www.westerntydens.com/accessorie ... RcQAvD_BwE

I think they are in your area
Rod


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