My experience with fiberfax was not ideal.  I lined the bottom of my cowling

with it to protect the fiberglass from the heat of the exhaust -

unfortunately, it absorbs oil like a wick and I was concerned about just

that.  Perhaps,if you cover the fiberfax with something like SS or anything

to keep the oil away,  then it may be OK.   I also found it fairly fragile

and easy to tear.  Just my experience with it - YMMV

 

Ed

 

Ed;

 

Fiberfrax is intended as a thermal insulation used between other surfaces, such as on the firewall behind a thin SS barrier.  For your cowl protection you might want to consider an aluminized reflective barrier such as:

http://www.jegs.com/webapp/wcs/stores/servlet/product_10001_10002_750869_-1_10633

which will not absorb oil.  I got it at a local speed shop.

 

Al