Author Topic: Stainless manifold?  (Read 2956 times)

Offline devilscaff

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Re: Stainless manifold?
« Reply #10 on: 09 November 2012, 23:05 »
Thanks for the advice gonna cancel the garage and use the money on something in car related for a change!! Lol

Offline Diamond Hell

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Re: Stainless manifold?
« Reply #11 on: 09 November 2012, 23:11 »
With only a home-built tubular manifold on DannyP's ABF put out +170bhp a couple of years ago.

Jus' sayin' like.  :whistle:
Just because you're offended doesn't make you right.

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Offline Gambit

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Re: Stainless manifold?
« Reply #12 on: 09 November 2012, 23:12 »
Where are you taking it to get setup? Look for somewhere that has kjet knowledge and do the WUR mod on your car.

Have you done compression test on it etc?

With a wur mod you can get 150bhp on an otherwise std 1.8 16v if its in good health
« Last Edit: 09 November 2012, 23:13 by Gambit »

Offline devilscaff

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Re: Stainless manifold?
« Reply #13 on: 09 November 2012, 23:16 »
It's going to a place called T&M's in Colchester been advised there the place to go locally there old Boys with old skills, what is the wur?

Offline Gambit

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Re: Stainless manifold?
« Reply #14 on: 09 November 2012, 23:22 »
Wur is detailed here
 http://www.golfgtiforum.co.uk/index.php?topic=31611.0

wur = warm up regulator. Its attached to side of head just below isv and beside dizzy, has two fuel lines running to it

Offline devilscaff

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Re: Stainless manifold?
« Reply #15 on: 09 November 2012, 23:38 »
Ok cheers il see what they do and let you know

Offline Metallix

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Re: Stainless manifold?
« Reply #16 on: 10 November 2012, 09:57 »
With only a home-built tubular manifold on DannyP's ABF put out +170bhp a couple of years ago.

Jus' sayin' like.  :whistle:

Was this home-build manifold tested before & after at the same dyno?   The original cast manifold isn't going to stop you getting to 170bhp if other work has been done.

Offline clipperjay

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Re: Stainless manifold?
« Reply #17 on: 10 November 2012, 10:20 »
Its academic TBH we had experimented with loads of manifolds in the day and we found the material was the key! Some stainless is too hard due to the compound material some used and the vibration caused cracking and splits over time. This is why there is as mentioned a flexi pipe to absorb any vibrations from the engine.
We finally decided that a stock cast iron mani reacted best with the resonated frequency from the block caused the least damage over time. As for performance wrapping the heat away from the engine bay made more difference than sticking an over sized manifold when the car didn’t need it at all!
The worst bunch was the Chrome ones they were just horriable to the core and reacted badly with resonated frequency.  I'm guessing this is why most stock manifolds are cast iron?

Offline Metallix

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Re: Stainless manifold?
« Reply #18 on: 10 November 2012, 17:07 »
Cast parts are cheap.

Though these days robot-welded manifolds are now replacing the cast items.

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Re: Stainless manifold?
« Reply #19 on: 10 November 2012, 18:51 »
With only a home-built tubular manifold on DannyP's ABF put out +170bhp a couple of years ago.

Jus' sayin' like.  :whistle:
This.

Got a reliable 12bhp on a KR with a Manifold and ported inlet about 12 years ago, is ball ache but thats what owning a MK2 is about is it not :grin: