Firewall insulation

[Johno]

G'day

So my next question is... Having looked at things like silent coat and dodo Matt for sound insulation it strikes me that a thicker more heat focused product might well be more appropriate for the firewall and perhaps the gearbox tunnel due to the natural route that heat from the engine will take. Please excuse me for reopening something that is often discussed but I'm wondering if something more might be required in the areas mentioned.

Gentlemen your thoughts?

Oh and does anyone have a decent diagram of where the stock stuff was fitted and outlines? Patterns even!?

Don't want much do I...... Don't ask don't get😊

Regards Johno

[PeteH]

On the "firewall". I am tempted to use some 1" (25mm) Kingspan I have left over from a build. Foil coated both sides and with a 1 hour fire rating!. Not very flexible though, so would have to be cut and fitted in several pieces.

I don`t suppose anyone has tried expanding closed cell spray foam?.

Pete

[JohnD]

"expanding closed cell spray foam" is 

A/ Inflammable

B/ produces toxic fumes when heated beyond 60C.    

C/ WHOLLY unsuitable for use on a firewall!

Don't do it!

John

[dougbgt6]

I found Silient Coat sufficient heat insulation on the bulkhead and the tunnel. Most/more important is blocking all the holes and gaps the heat sneaks through.

Doug