HI Alex,

If I were going down your path I would opt for the EZ-Lam HT.  If your under-cowl temps get to 450F, a melted intake manifold is probably the least of your problems.  To put things into perspective, I've installed thermal fuses along the top of the firewall on the Lancair IVP I've been working on, and they blow at 400 degrees to set off our fire warning system.

The other reason I'd go for the EZ-Lam is the viscosity... 5000cps is still pretty high, but given the long pot life, and if you vacuum bag, you might be able to get the resin content down to 50-60%.  (Aerospace hi-temp pre-pregs cert at 39% +/-1%).  The 562N has a mixed viscosity of 8500cps... that's sort of like molasses... even with carbon fiber, wetout will be a trick.  (I've used some 10,000cps material and couldn't wet out standard 7781 e-glass without raising the application temps to 120F+.)

Just my 2cents.

   <Marv>



"Alex Madsen" <madsena@rose-hulman.edu>:

 I have been gathering information on high temperature epoxies for my
 carbon fiber intake manifold project. I think the two best candidates
 are EZ-Lam HT http://www.acp-composites.com/acp-ez.htm and Aremco-Bond
 526N Epoxy
 http://www.graphitestore.com/items_list.asp/action/prod/prd_id/49/cat_id
 /4 .