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mini_mad69

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Bridgend

15th Nov, 2012 at 11:41:06pm

I'm going to be turbo charging my vauxhall engine in my mini, I've seen a few people make log style turbo manifolds, I know a local company that can make my flanges, but where do you get the pipe to make them?

Like this :


(google image)

Thanks in advance

Turbo parts collector at the moment, almost ready.

stevieturbo

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Northern Ireland

16th Nov, 2012 at 12:06:21am

Any decent plumbing type supply place, or stainless/alu stockholders

Even ebay has plenty.

If you arent fussy about stainless, plumbers black iron pipework is strong and relatively cheap ( especially if acquired from plumbers on building sites ) lol.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will


stevieturbo

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Northern Ireland

16th Nov, 2012 at 12:10:48am

oddly...just googled looking for a 3" alloy bend and found this lol

http://www.iconperformance.co.uk/index.php...haust_manifolds

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will


mini_mad69

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257 Posts
Member #: 7048
Senior Member

Bridgend

16th Nov, 2012 at 12:13:23am

Ok great, anyone know roughly what sort of bore I should be using, I was thinking 2" ID, its a 1800 16v engine

Turbo parts collector at the moment, almost ready.

jamiestevenbell

336 Posts
Member #: 9941
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Derby

16th Nov, 2012 at 07:19:41am

places like bss or wolsey pipe centre or crosslings will sell you 2" ID fittings tell them its for welding and ull get it cheap

stevieturbo

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Member #: 655
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Northern Ireland

16th Nov, 2012 at 08:49:06pm




On 16th Nov, 2012 mini_mad69 said:
Ok great, anyone know roughly what sort of bore I should be using, I was thinking 2" ID, its a 1800 16v engine


Depends on the style of manifold. If a full tubular, the you could consider a 2" bore for 8-900hp upwards.

Log style like pictured and very short then 2" tubes probably wouldnt hurt. Generally it is more about maintaining heat and gas speeds with turbo manifolds than having large diameters.

But for a tubular manifold, even 1.5" OD fine, maybe 1 5/8" if you were pushing hard.
Having excessively large tubes will hurt spool which will hurt performance.
That's why some makers ( Vauxhall was one ) cast the turbine housing and manifold all in one piece.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will


mini_mad69

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257 Posts
Member #: 7048
Senior Member

Bridgend

16th Nov, 2012 at 11:25:53pm

Fantastic, im not going for out and out power yet. Just need to get it running and can then develop it from there with better manfiolds etc. Thanks for the help, this site never seems to fail on technical help.

Turbo parts collector at the moment, almost ready.

stevieturbo

3594 Posts
Member #: 655
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Northern Ireland

17th Nov, 2012 at 06:42:56pm

TBH, even the most horrific and ugly manifolds will still allow you to make enough power to grenade the engine.

Worst thing you can do though, is opt for huge diameters.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will


Johnny

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Accrington

17th Nov, 2012 at 07:46:04pm

not sure if im right but ive always gone for the matching point. if the outlet on the head is (for eg) 38mm ID i will go for a 38mm ID tube collector, then match the collector to the turbo inlet.
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