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ALUMINUM TUBING |
| Subject: Ed's intake tubes. |
| From: Paul |
| Date: 3/26/1999, 2:29 PM |
| To: zz |
Anderson Ed wrote:
Paul, You right, of course, that the a butterfly is only a valve, however, in this case the throttle body casting has holes for the four injectors as well as the mount for the fuel rails. I could of course plug up those holes and weld in some new injector bungs closer to the intake port and gain the benefits you mentioned. I had actually considered doing that but just did not see the benefit worth that amount of work. If I were going to do that I would consider using a very light IDA throttle billet offered by TMW that is only 1" thick (simply thick enough to hold the butterfly valves and shafts) which would save some weight over the weber throttle body casting and then add some injector bungs on each tube runner.
But that is intake mod 3 for later {:>}. Neil pointed out that
I may be able to use the stock bottom manifold as I have milled some of
the flange off the Delotro upper manifold casting which reduced the
likely hood of interference with my motor mount that I initially had.
This would be a quick check on just how bad my homemade slab manifold
is. I noted Neil's comments about the frosting on the tubes of
carburated intake systems. I don't think that would be a problem with
fuel injector with no venture pressure drop, but you never know.
Ed Anderson
The fuel vapor distribution problem could be a part of your HP loss. You should be able to save a bunch of weight and use 0.049 or 0.065 wall aluminum tubing. That is available pre bent in 1.5 inch, 1.625 inch and 1.75 inch diameters from Burns in 0.049 and 0.065 wall 6061-0. I was a little surprised when you mentioned some time ago Burns did not have what you needed. See the Burns HTML catalog sheet below. What diameter and length did Paul Yaw recommend? You might be able to sell the throttle body you have to a car racer. Paul alutubing.html The Aircraft Rotary Engine Newsletter. Powered by Linux. http://home.earthlink.net/~rotaryeng/ http://www.linux.org
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Home Page Tech Info - - Merge Collectors - DYNOSYS Company Information Burns Stainless LLC 1013 W. 18th Street Costa Mesa, CA 92627 949 - 631 - 5120 FAX 949 - 631 - 3184 Call Monday - Friday 8 am to 4 pm PST
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For intake and cooling systems 6061 aluminum is the least expensive and most versatile of the heat treatable alloys. In annealed T0 condition it has good formability for bending. The full-temper T6 properties may be obtained by solution heat treating and artificial aging after welding. Not recommended for exhaust systems.
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