consequences of using cracked exhaust manifold?

[Derek]

Huw writes:

>... I think the hot exhaust gas leaking out will slowly cut that crack
larger and larger.
> Also, the crack might grow due to whatever forces created it

"URquattro1989" writes:

>4 my 2c/w personally if the manifold were meant to have a crack in it, it
would be constructed with one.
>To make do Id weld at best, replace with a pre-owned if avail.

Since I have to go to the dealer tomorrow for some obscure parts, I'll see
just how expensive a new manifold is.  I may end up using my cracked one
anyway, as the dealer price is bound to exceed what I paid for the whole
motor.  My local pick-n-pull has 3 manifolds.  They are not cracked
(visibly) in any of the runners, but are cracked internally where the
runners merge into the turbo inlet.  I'm not sure which is worse.... I'd
hate to think of a piece of metal flaking off inside and going through the
turbo.

Thanks to all who replied!
-Derek