X-Mozilla-Keys:                                                                                 
George A. Graham wrote:

To the multitudes who aspire to manifold creation:

I've made quite a few, and finally have a good method.

Features:

   It will withstand the heat soak after shut-down
   It is very light weight
   It takes up very little room - sticks out only three inches
   It can be adapted to almost any throttle body (carb or efi).
   It is easy to make
   It is inexpensive
   It "cleans up" the six port manifold flow

My intake manifold is carved from rigid urethane foam, which is split
down the middle (or made from two pieces), with the flow pathways carved
out, then fiberglassed.  The two halves are then glued together with
micro-balloon epoxy paste, and inserted into a shell.  This shell is
a one foot long section of three inch square tubing with 1/8" thick wall.

Once the "tunnels" are installed, the ends of the 3" tubing are glassed
shut, with more fiberglass and epoxy.

I added a small steel plate inside the tube to carry the carb attach
studs.

The top bolt near the flywheel goes through the tubing, tight to the top
wall, the other three mounting bolts are outside the tube.

My carb (2 bbl Carter) is mounted directly to the top of the horizontal
square tube. If I were adapting longer "tuned" intake tubes, I'd either
use the stock casting, or a variation on this idea.

George Graham
RX-7 Powered Graham-EZ, N4449E
Homepage <http://freenet.buffalo.edu/~ca266>

Thanks  for sharing this with us.
Planing on coming out to Copperstate George? Hope to see you there.

Paul Lamar
 
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