X-Mozilla-Keys:                                                                                 
Bill Freeman wrote:

Chuck Dunlap wrote:

Here are two pictures of my manifold assembly. It uses 1 1/4" .050 wall
primary tubes and 1 1/2" .065 wall secondary 6061 tubes from Burns
Stainless. They are welded to a 1/8" thick (!) flange on each end. I
would use 3/16 if I were to do it again, but I thought the 1/8 would be
easier to weld.  I used the 1 1/4 and 1 1/2 size because that is the
size of the openings in the stock 90 degree manifold piece. The dynamic
chamber is built to the shape of the cowl and has nylon horns on the
inside that I turned on the lathe. The throttle body is from a 280ZX.
The tubes were welded locally. The tubing assembly weighs about 2 1/2
lbs.

Chuck Dunlap

Great looking manifold Chuck. If you don't mind I would like to put it
on the web site as a good example. Credit to you of course.

Paul Lamar

Excellent manifold example.  I really think that a bit of shopping will find a
welder that can join 0.049 alum tubes to a 3/16" flange with little warpage.
You may need to take a 0.010 to 0.020" mill cut to get absolutely flat,
but I bet most would clean up with a flat mill file well enought that an
RTV gasket in place would seal fine.

Bill

 
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