Quote:
Originally Posted by fanaudical
Are you having intake manifolds casted somewhere? Or are you using 3D printed manifolds? If using printed manifolds, what material?
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Yes, but i'll get into that below...
Quote:
Originally Posted by al lkosmal
I thought you might like to see this pic of my proto bellcrank mod. l
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Always love to see your work! Thanks again for all the inspiration!!
Quote:
Originally Posted by jpnovak
There are some PET and PET/Nylon blends that would work but have softening issues.
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You hit the nail on the head with this statement.
The original idea was to install a 3D printed manifold.
The first 2-piece printed sample was ABS and very hard and machinable. It printed well and was relatively accurate.
We then printed some in Nylon. These ended up being much softer and more difficult to print. The two below that are a single piece are Nylon. The tolerances were much further off with these and during the printing process they started to sag, you can kind of see a line mid-runner where they shifted. I tried to clean them up and even coated them in a fuel tank epoxy, but in the end, I didn't want to risk them leaking fuel or not creating a good seal.
http://i35.photobucket.com/albums/d151/c_hundley86/porsche/AFDB39B5-D6AC-4B17-826F-7E97C816C8C6_zpsn4hd1ijz.jpg
After messing with 3D printing for a few months, I finally bite the bullet and had a pair casted in aluminum. On these I included bosses' for Weber/PMO crossbar linkage and a pivot rod for the Weber/PMO bellcrank.
At that point I ditched the idea of using cable linkage and picked up some modified PMO linkage from Al @ x-faktory.com .
And one of the hardware mocked up with the distributor and plug wires still installed.
