2 piece exhaust manifold???

[alan pritchard]

ok what am i looking at here?? i know its a em that takes a turbo, but why 2
flanges?? i always thought that turbos let the gasses through to a flange
the other side of the turbo that the downpipe connects to, so whats the 2nd
flange for???????
----- Original Message -----
From: "Gerard" <gerard at poboxes.com>
To: "Michael Gough" <mdg3369 at altavista.com>
Cc: <quattro at audifans.com>
Sent: Friday, June 15, 2001 9:06 AM
Subject: Re: 2 piece exhaust manifold???


> > So ummm, what cars was the 2 piece EM on? All the turbo manifolds
> > I've seen are one piece. Where was the split made? Anyone have any
> > pictures of one or drawings so I could see one? I got a 5kt gas downpipe
> > tonight, so I can replace the 2 inch turbo diesel one with a real 2.25
> > inch one for more high rpm power.
>
> The 2-piece was fitted to the late model MC engines in the 200. It seems
> they were usually fitted under warranty, and some have said that it
> doesn't look like there were cars in the USA that came from the factory
> with the 2-piece EMs fitted.
>
> The split is between cylinders 3 and 4.
>
> Here are some photos I took:
>
>    http://64.176.6.234/manifold/manifold-ceramic-sharp.jpg
>    http://64.176.6.234/manifold/manifold-2.jpg
>    http://64.176.6.234/manifold/manifold-bottom-sharp.jpg
>    http://64.176.6.234/manifold/manifolds-sharp.jpg
>
> In the 3rd image you can see the crack at the turbo collector. It's the
> light V-shaped mark between the 2 runners as they join at the turbo
> flange. This crack seems to extend to the crack on the vanes of the
> collector and you can just make this out on the last image as the fine
> black lines spreading out from the bottom vane of the collector.
>
> My digital camera has arrived, so I will be taking some more pics
> sometime soon. I will be able to get pretty close.
>
> G.
>