Actually, my first suggestion would be some place that does "hot rod" restoration parts, like Year One. These sort of folks carry NEW fiberglass matt material, similar to what was used in the long ago days, under the hoods of various muscle cars. Some places sell only the pre-cut patterned sets, while others have it in bulk.

  Another place to talk to would be any furnace  installation company in your local area. Furnace filters are often fiberglass matt, and bulk insulation is also easier for these suppliers to find.

  You will wish to have some bulk to the cloth, to help with noise abatement, in addition to heat  dissipation...

Chris S <szpejankowski@GMAIL.COM> wrote:
  I second fiberglass cloth. Fiberglass is also used to insulate exhaust
pipes and may withstand temps up to 1000F.

Chris.

On Tue, Jul 15, 2008 at 2:34 PM, Neil2 wrote:

> I used fiberglass cloth from me local Baxter Auto Parts.
>
> Welcome!
>
> On Tue, Jul 15, 2008 at 9:04 AM, neil N wrote:
>
> > Hi all
> >
> > Had some good hot/noisy/smelly "open engine compartment" test drives
> > on my Jetta conversion recently, so am now cutting and tubbing the
> > engine lid. Searched the archives, but didn't find what I'm looking
> > for.
> >
> > I'll use the stock engine lid insulation, but need more to cover the
> > added ~ 4" x 22" pieces.
> >
> > Anyone know of a suitable/safe material available at a
> > hardware/building supply store or my FLAPS?
> >
> > For odd duck things like this, it's a miss/hit affair finding someone
> > in these places that knows what they're talking about, so appreciate
> > any help. I imagine the material should withstand a certain degree
> > (pun intended!) of heat hence my question of a "safe" material.
> >
> > Am I relegated to the boneyard? --- :^)
> >
> > Please and thanks,
> >
> > Neil.
> >
> >
> >
> > --
> > Neil Nicholson '81 JettaWesty "Jaco
> >
> >
> http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas-engines
> > http://web.mac.com/tubaneil
> > http://tubaneil.googlepages.com/
> >
>
>
>
> --
> Neil2
> '86 Vanagon/Weekender in process (Savannah)
> Nunquam Pendite Divendium
>