Heads, blocks, and turbos

[DeWitt Harrison]

I once held a steel AAN gasket up to a stock MC gasket
as I was contemplating an upgrade to the steel unit. I
chickened out and installed a new MC gasket because the
coolant holes through the gaskets are different, both in diameter
and in distribution of hole diameters front to rear. Perhaps --
memory can be a tricky thing, especially in my case --
the MC gasket encouraged greater coolant flow around
cylinder 5.

In any case, I worried there could be unintended consequences
to making the swap. The direction of coolant flow through the
AAN (and 3B?) head is opposite from the MC, yes? This
further weakened my rationalizing that coolant passage
design couldn't be all _that_ important.

That said, it appeared that, in general, the steel gasket would
permit an overall greater total coolant flow. How the poor little
radiator in a tweaked 5kt could handle even more heat input,
I don't know.

DeWitt Harrison
'88 5kcstq

On Thu, 22 Feb 2007 01:20:49 -0500,
      "Cody Forbes" <cody at 5000tq.com> wrote:

> While on this subject I had a question.
>
>  Anybody every use the multi-layer steel urS6 head gasket on a 10v? I did
a
> top end rebuild on a '91 200 20v TQ last week and we updated to the steel
> gasket. I kept the old gasket to match up with an old 10v gasket I have,
but
> haven't gotten the two in the same zip code yet.
>
> Since my block is o-ringed I don't need to really worry about the head
> gasket too much anymore, but I figured on going to the steel HG next time
> the head is off.
>
> -Cody Forbes