Thanks Al,
I was thinking of an application like holding seated runners in the machined
manifold.  Or possibly joining tubing together.  The ability to contour and
smooth this product would seem suited here where air flow is an issue.  But
I don't know if it would stand up to all the rigors (vibration, heat, etc.)
Just throwing it out there since JB Weld is smoothing the ports on several
intakes out there.
Bryan

One of many methods is to make the flange and stub tubes of aluminum TIG welded together.

Make up runners of childs modeling clay. Let the clay set up for several days. Paint on a thick coating of epoxy and filler like talc. Let it harden. Paint on some laminating epoxy, and wind lengths of fiberglass or carbon fiber tape to form the runners. You can add another aluminum flange at the end of the runners as well.

 

Wash out the clay in the parts cleaning tank or a bucket so as not to foul the solvent. The runners can be as smooth as glass inside. From my Kart racing days.

 

The intake is cooled by the fuel and should be protected by a insulated plate between the intake and exhaust to cut radiant heat, after shut down.

 

Lynn E. Hanover