I've had heatwrap on my BJ8 extractors for nearly 15 years too.
I painted it with white UHT paint.
http://www.myaustinhealey.com/austin_healey_3000_pics_enginebay.html
I would have liked ceramic, but you have to fit the extractors, tack
weld the primaries to the secondaries, pull them off, weld them
properly, refit and recheck clearances. Then you wrap them and paint -
or pull them off again, send them away to get ceramic coated, wait a
week or so, then finally fit.
Chris
Sent from my iPhone
On 27/08/2010, at 4:11 PM, "Thomas Willig" <twillig@ruda.de> wrote:
> Hi Tadek,
>
> my garage buddy is running his BN2-M since 15 years with heat wrap
> around the
> tubular exhaust manifold. He even went racing with it to
> Nuerburgring etc. He
> faced absolutely no issues. On the other hand, the fitting of the
> heatwrap
> stopped the random fuel evaporation on very hot days.
>
> I go for heat wrap.
>
> Regards
>
>
> Thomas Willig
>
>
> Hello all,
>
> I have done some research on this and I found that the heat wrap has 2
> drawbacks:
> - if you isolate your manifold and the down pipe continuously you
> may end
> up with a burned pipe, as the heat that is traveling through the
> pipe has
> nowhere to escape, in result heating the exhaust system to a point
> where it
> may burn out. A solution is to wrap it intermittently, leaving gaps.
> - the heat wrap (although flame retardant) may start burning.
>
> Ceramic coating is better in both cases, although more expensive.
> Ceramic
> coating may though look more original on your car if you choose the
> right
> color..
>
> There was an article comparing the two - I have it and will post as
> soon as
> get back home.
>
> With the heads we have, where exhaust & inlet are on the same side
> of the
> engine I would not use heat wrap.
>
> Best, Tadek
> ______________
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