Road Noise Reduction

[BornFree_n_Now]

We recently opted to do an upgrade to our exhaust system (quite happy with the results), but ended up with a bit more “characterâ€

[bfadmin]

Larry & Sharon,

I received a call from the Born Free factory today concerned somewhat about your putting expandable foam insulation between these metal plates and the under side of the wood flooring under your Born Free motorcoach. Born Free would consider this modification a potential fire hazard if the insulation used were at all flammable or had certain undesirable thermal transfer characteristics.

They pointed out that those metal plates were actually heat shields placed there to protect the wood flooring against the high heat from the nearby exhaust system components. Depending on the thermal characteristics of the particular type of expandable foam that you used, it could actually cause the wood flooring to rise to an unacceptably high temperature negating the reason the metal heat shields were installed in the first place.

bfadmin-2
Bill Hemme
Spencer, IA 51301

[BornFree_n_Now]

First off, let me say that we are positively impressed by the fact that the Born Free factory watches the forum, and cares enough to offer comment on what could well be a hazardous modification ~~ As it turns out, we had considered the issue they have raised before our installation, and took the following precautions, which we believe will prevent any adverse effects of the nature mentioned.

• The muffler we have placed on the vehicle is of straight through design, and the entire exhaust system is constructed of 4â€