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Keith Tanner
Keith Tanner GRM+ Memberand MegaDork
7/29/24 6:40 p.m.

In reply to Pete. (l33t FS) :

You could probably print those out of nylon.

Pete. (l33t FS)
Pete. (l33t FS) GRM+ Memberand MegaDork
7/29/24 6:45 p.m.

In reply to Keith Tanner :

That was my original idea.  The issue I can foresee is that, with one stub manifold per bank and nothing in the middle, they may not much cotton to being between a pair of heavy carburetors and a vibrating engine.

GameboyRMH
GameboyRMH GRM+ Memberand MegaDork
7/29/24 7:00 p.m.

In reply to Pete. (l33t FS) :

I've been thinking I'll print ITB adapters for my 4AGE some day (since a 3-dimensional shape is required for a smooth transition from the diamond-shaped ITB outlet to the flattened-oval-shaped 4AGE intake manifold ports), I was looking at a plastic called Ultem that's often used for similar purposes in FSAE due to the high temperature properties.

There are also a lot of fiber-reinforced plastics you can print with these days if you need more strength.

Mr_Asa
Mr_Asa MegaDork
7/29/24 7:07 p.m.
Pete. (l33t FS) said:

I really really didn't need to see this thread.

 

Did you know that nobody makes a pair of manifolds to mate Weber IDAs to cathedral port LS heads... yet?

You seen my LS head build?  It would be pretty easy to adapt.

https://grassrootsmotorsports.com/forum/grm/intake-design-and-building-how-to/186000/page5/#post3392461

Pete. (l33t FS)
Pete. (l33t FS) GRM+ Memberand MegaDork
7/29/24 7:15 p.m.

In reply to Mr_Asa :

IDAs are almost exactly the same center to center as, say, a Ford 289... or therefore, an LS.

have an IDA manifold... for a 351W... but why do it easy when you can do it fun?

Keith Tanner
Keith Tanner GRM+ Memberand MegaDork
7/29/24 7:21 p.m.
Pete. (l33t FS) said:

In reply to Keith Tanner :

That was my original idea.  The issue I can foresee is that, with one stub manifold per bank and nothing in the middle, they may not much cotton to being between a pair of heavy carburetors and a vibrating engine.

Having one stub manifold per bank is a design decision. You can decide not to design it that way :) A couple of bridges across the center would give you the lateral support you desire.

We use a carbon-reinforced nylon that is seriously good stuff.

Pete. (l33t FS)
Pete. (l33t FS) GRM+ Memberand MegaDork
7/29/24 7:52 p.m.

In reply to Keith Tanner :

There's also an aesthetic that I want to see, carbs on the heads with a bare engine between them save for the throttle linkage.  

I also keep getting crazy ideas for making a 2.4l odd fire four cylinder, which admittedly would be much better suited to DCOEs, but, well, they aren't called sane ideas. Left bank just has a cover plate on the block.  Water pump passages plugged off, too.

 

I originally got the "stub manifold IDAs" idea while looking at a 5.7 Hemi with the intake manifold removed.

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