In reply to ¯\_(ツ)_/¯ :
You might be able to do you manual cut/shut fabrication and use some of the 3D printing filament as weld/filler material. The glass fibers wont be tied in as good as a molded piece, but will be the right material. The 3D print nozzle temp for that filament is about 260deg C, so that is where you would need to be with any melting/filler material.
When I was converting my Lancia to Megasquirt, I didn't like any of the EFI manifolds that were available. I ended up making my own. I made a flange to bolt up to the head that I welded injector bungs onto with short aluminum runners to feed the plenum. The runners and plenum were made out of foam that was then wrapped in carbon fiber. I melted the foam out and it all worked pretty well.
In reply to Scott_H :
That would be my solution and the resin is the same I will use to make the wing. Only cost is for foam and carbon, and I have some sleeve in stock. The resin bonds well to aluminum too.
In reply to TurnerX19 :
Carbon against aluminum can corrode the aluminum. That is one of the reasons that I anodized the Al. I will take a photo of the CF 2GR manifold I started. It is 1.0 and I will remake it with a few different ideas.
In reply to Scott_H :
Definitely interested in seeing what you've got going on, I wonder if I could cut the runners off a stock piece and bond them to a new plenum.
What about the rwd Lexi with the v6 (is350, etc). Could the plenum/manfold swap over to get a better orientation?
I need a diy on plenum making stat.
Confirming that plastic intake manifolds are indeed PA6 or PA6/6 (aka nylon) with GF reinforcement. I've worked for the chemical companies that manufacture the materials.
Wxdude10 - Mike said:What about the rwd Lexi with the v6 (is350, etc). Could the plenum/manfold swap over to get a better orientation?
IIRC the ones with favorably low intake manifolds are also direct injected, with different port shapes.
The second gen IS couild have been had with a non direct injected engine, if you want to go junkyarding in the Middle East or SEA where it was sold.
For those scheming along similar lines- I've discovered that an SLS print in Nylon 12 for something the size of an intake can be under $400 now; the future is weird. I'm designing with that idea in mind right now and will probably pivot again but that's the current trajectory, primary challenge is just keeping it within the print envelope since the "long and low" type is too long.
Marc just dropped this new lower-profile intake that still uses the Holley hi-ram universal plenum. A lot cheaper too.
https://frankensteinmotorworks.squarespace.com/shop/p/2gr-fe-low-profile-short-runner-intake
In reply to maschinenbau :
Interesting- it'd still be inside the wiper cowl at the back but it's a lot closer to the right height, if I ignore runner length entirely.
I see how it is, you don't trust my feedback :)
:P
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