Hi everyone. I just found this site and I'm very impressed. I was looking for something just like this.
I'm considering a modding project, but to be sure it'll work, I need to know the dimensions of a typical PowerMac G4 logic board. I'm planning on building the computer from the ground up, and I can't find any info on the web about the size of Apple's boards. I realize there are different boards, and the dimensions of any of them will help me.

BTW, if anyone cares, my project is to (if possible) fit a G4 into a Classic Mac and replace the CRT with an LCD. I have the Classic and it's kind of small, which is why I need the size of those boards.

Any replies are appreciated
Thanks,
Jon

Dig around for information on Power Color Classics, specifically the Taco projects. The Tacos are almost exactly what you're looking to do except a slightly different case design.

As for the board sizes I doubt you'll be able to fit a G4 tower board in there. To the best of my knowledge all of the AIO mac hacks (that stay macs) use boards from Beige G3s (G4 upgradeable), iMac G3s, G4 Cube boards, or upgraded pre G3 boards like the 6400s and 6500s.

Anyways here's some Color Classic upgrade information
http://www.colourclassicfaq.com
Stuart Bell's Taco Project Page

Yeah, All the G4 'PowerMAC' motherboards will be too large. I'd start hunting for an e-mac, iMac G4, or powerbook/ibook G4 on the cheap, something with a dead display perhaps. They'll all be a bit of a challenge to extract and remount in the classic case, but should work. I'm pretty sure the insides of an iMac G4 could be wedged inside there. The 12" PB/iB would be the easiest.

Sourcing an LCD to fit and fitting it will likely be a bit challenging. The CRT screens are curved at the front vs a perfect flat LCD. I recall from my SE->aquarium project that it took a lot of filing to get the flat front to fit, and the bezel was never quite a perfect fit.

good luck with your Mod.

I don't think logic board measurements are readily available. I am on my iBook right now, but I'll be happy to open up my AGP G4 and measure it when I get home from vacation. I think you have winning mod idea on your hand. The SE was such a cool size and there should be plenty of room in there when you replace the CRT with an LCD. I will measure my logic board, but I'd recommend a cube due to your space limitations.

Jon, you may want to contact the creator of this weeks mod of the week because he may have some suggestions on what may or may not work inside there.

Jon,
I would use an old powerbook pismo or a newer ibook. I don't know what size the logic boards are, but they are likely to fit. Also they have a monitor output so you can get an LCD to fit it. Look on ebay for bottom halves of the laptops, I have seen quite a few.
-Maestro

Well, if you want, my Sawtooth Rev 2. board is 11 1/2" x 10"