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My 76 has a strange insulation in the roof of the engine compartment.
It is like pressboard or masonite.
Full of holes...
THere are these horse-hair bags above it for insulation.

Plus, there's the fiberglass mat held in place with a wire under the trap door..

All fo this stuff was falling apart and into my compartment.

Anybody have any ideas for a slick way to replace it with something better?
Was thinking about 1/2" thick foil-backed house insulation,
Or making something from plexiglass.

It would be sweet to just leave it out.
Anybody ever try this?
Did it make the bus noticibly louder inside?

Any wisdom is appreciated...

I was in the same predicament ,had the same stuff with the same problems ,i stuffed the trap door full of roof insulwool then put an ally checkerplate cover on it and for the body i used a sound deadening product sticky back stuff and applied it right across the roof area ..Windows up i cannot hear the engine at idle

blue77bay wrote:..Windows up i cannot hear the engine at idle

And this is a good thing?

Bookwus wrote:

blue77bay wrote:..Windows up i cannot hear the engine at idle

And this is a good thing?

ABSOLUTELY i have all the instrumentation i need and i don't need the roar of my engine on the highway upsetting my conversations .At 3k rpm i can have the normal 1 sided listen to my partner as she tells me what we are going to do for the next whatever time period she has selected

LOL!

... Mine is loud as hell. Which I can see as good and bad.