adjustable WG cap mod, & other incremental increases

[Gerard]

> The above story must be about a 2-piece, right Gerard?

Ooops, sorry, yes it is about the 2-piece. I had to send the 2-piece for
welding and I used the messed-up 1-piece to keep the door open.

> I wonder if the cracking is caused by a temperature change upon
> cooldown, warmup, or physical stress?  All of the above, I would
> imagine.

Probably a combination. I've heard it's engine mounts as well.

> I've seen pictures.  I think maybe at the TAP website.  I'd like to
> see a group effort put forth to get some type of turbo header, or
> tubular manifold.  Apparently only certain materials can be used for
> turbo manifolds tho', also due to cracking problems.

I recall someone out in Australia was doing this a while back. I have
the e-mail somewhere.

> And another question.  Would this cracking potential be any worse
> if I lived in a hot area like AZ?  Or are the temperatures or factors
> that cause cracking problems for everyone?

I've got no input on this one. I like in South Africa where the summers
can be cooking, but I wouldn't know if the air temps would make a
difference.

> OK, more questions.  Would ceramic coating help the situation?

I sure hope so. I had my 2-piece coated inside and out. If it doesn't
drop the temps in the metal a bit, then I guess it will just be a long
lasting anti-corrosion coating. Looks kind of nice too. :)

G.
-- 
gerard at poboxes.com
q-list info: 1989/90 200 (mac13a MC-1)