Quadra 700 Mainboard in IIcx case ...

[franklyn]

The free spaces between the interface sockets could be filled/glued in with 3D printed parts, then filled with plastic filler and painted ...?

If it turns out well, perhaps even a Quadra 650 motherboard could be installed because of the three Nubus slot slots?

 

[pom]

I’m also contemplating the idea to put a 650 in a Ilcx case or similar if I find one.
Do you reckon the motherboard will fit ?

Here is a video showing how to fit 650 in a 700 case

 

[killvore]

It should fit, I put a 7100 board in a IIci case and it works great, lines up with the PSU and everything. You need to dremel some room in the back for ports though, since they are different between the IIcx/i and the Q650/700. You can even trim the plastic around the lock tab (circled in pink) to open it up and serve as extra support for a PDS card - I have my G3 accelerator there. Only issue is the case is not wide enough to let me hook up the passthrough for the HPV card!

 

[pom]

The end result is very nice!

No issues with heat extraction?

Edit: I realize I may have diverted from the original question quite a bit.

 

[Phipli]

If it turns out well, perhaps even a Quadra 650 motherboard could be installed because of the three Nubus slot slots?

I’m also contemplating the idea to put a 650 in a Ilcx case or similar if I find one.
Do you reckon the motherboard will fit ?

Yeah, my dad has a 650 logic board in a IIcx case. Needed rework for the ports as discussed, but otherwise not an issue.

@SophieRose has an 840av in a IIci case and I think @joshc had a Q700 in a IIci case.

I looked into the feasibility of putting even newer boards into older cases (the form factor didn't really change until the Beige G3 for many of Apple's machines), but the PCI machines have all their ports in a larger grouping away from the expansion slots instead of in a single row, and I wouldn't feel comfortable hacking a case up. I didn't do much more checking after that, but they basically should fit, although you'd have to solve the power supply and drives issues as the mounts might clash.

I remember what I was considering - I contemplated putting a Centris 650 board in a PM 9600 case because of reasons