Wagner SQ EVO Exhaust Manifold

[A80Avant]

Argggg!

mine will take more. as i have a K27 to T3 flange which at least needs modifying to refit, otherwise the downpipe will out of line...

[Rocco]

this looks like perfection. Makes me want to buy it much sooner than needed...

definitely this forum is full of nutters like me

[Jamo]

EVO manifold on mine I smoothed the casting on the inside of the runners and currently made 528hp

How did you do this and get all the way into the runners? I'd like my sq done but can't find a way to do it

[Acidburn]

How did you do this and get all the way into the runners? I'd like my sq done but can't find a way to do it

I hear there is a forum member with a fetish for dremels that might be able to help...

[A80Avant]

i was always told about a technique actually available in the uk, where they can blast diamond dust or some kind of particles through the bores and make them mirror finish smooth. Never managed to find such a shop

[JP]

How did you do this and get all the way into the runners? I'd like my sq done but can't find a way to do it

On the evo manifold I managed to get all the runners mirror finished using my custom flapper wheel/cartridge roll with extended 8" arbours setup on an electric industrial die grinder (not a dremel, you cant do anything with one if those!) I use for vr6 heads. Not sure if I have the same access on an SQ mani.

Very time consuming job though as you're dealing
with cast. Only did it on mine as I could, if I personally had to pay someone two days work + materials I wouldn't be overly keen of cost vs gains.

As for the blasting material down the runners process I believe it was around £300 many a year back when I looked into it which is again why I decided to spend my own time on the mani. Can't for the life of me remember who the company was though.

[AndyP]

There was a place that used to advertise in PPC magazine that offered this service, it's called extrusion honing. I've had similar results by shot blasting, I did this on the chinese RS2 replica manifold I got of Ebay.

[Jamo]

In PPC ? I've been looking for 3 years a place that does extrude honing at a decent price. Can you remember the name I'll look in this months mag I have at home

[Error404]

You can get them extrude honed where they force abrasive putty through the runners. Aero / motorsport stuff and I would think has the appropriate price tag! There's a place in MK called Extrude Hone Ltd that does it.

EDIT: beaten to it by Andy!

I think extrude hone is a "brand" name for the process, its also called abrasive flow machining

[AndyP]

In PPC ? I've been looking for 3 years a place that does extrude honing at a decent price. Can you remember the name I'll look in this months mag I have at home

It's not in this months, I've just looked! I can't find it online either, I'll look though my collection of PPC mags and see if Ican find it.

[Jamo]

Thought so, I knew about extrude honing but the only place that comes up on the web is in Milton Keynes and when I phoned them they wanted £800

[Error404]

it'll never be cheap!

I have found: Deburring Services Ltd, Cheltenham

You need to convince Carsten to invest in the kit

[Jamo]

To be honest at the moneies being quoted it's a "wish" not a requirement, it will be impossible to max out the sq evo manifold imo on my setup

[Error404]

this is why its called project Greed Jamo

[A80Avant]

I was told that the main gain is longevity as the surfaces being smooth, without edges makes a crack difficult to start developing. I cryoed my previous EM and this one for about 120gbp and is supposed to improve the longevity as well, so I don't mind!

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