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Thread: G4 airflow hacks!

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  1. #1
    Join Date
    May 2001
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    1hr N/W of LA LA Land
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    Cool G4 airflow hacks!

    Or my God what have I done?

  2. #2
    Join Date
    Jan 2002
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    NW Montana
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    8,197

    Default

    It looks like your really ready and doing it right. on that sucker and keep us posted. I have to remodel my DA. Good luck, - Randy

  3. #3
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    May 2001
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    What you don't see in that pic is the Giga dual 1.6, and PCI cards safely tucked away in antistat bags. Or the beer.

    The first thing that needs to be done is get more hot air out of the case. After perusing quite a few sites with G4 cooling mods it's quite obvious that the single 80mm PSU fan can't get the job done with 4 drives, and a dually CPU. I could get an 80 that would move more air, but it would also make a lot more noise. I need to add another exhaust fan.

    I've seen the "blowhole" fan mods, but I don't like the idea of having open fans on top of the machine. There seems to be a bit of space on the backplate though. Hmmmmmmmm.........

    I bought one of these at Fry's, and removed the grills ( I hate grills- well not my Weber kettle It'll fit perfect where the CPU fan sits in the DA/QS machines, and will move more air with less noise since it's a true blower not an axial fan. The metal grill was simply pried off with a small screwdriver, and the switch removed. The plastic grill was removed with diagonal cutters (heretofore referred to as "dikes"), and the opening cleaned up with a rounded file, and an Exacto knife.

  4. #4
    Join Date
    Feb 2001
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    on the landline, Mr. Smith
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    7,787

    Thumbs up

    Inspiring!

    Been rounding up pieces/parts for a cooling project myself....though I wasn't planning on taking everything out.

    Do give us the play by play. You planning to cut an exhaust hole up bu the CPU?

    Weber, eh?

    Good man. Gas is for cars. And bikes.
    "Imagine if every Thursday your shoes exploded if you tied them the usual way. This happens to us all the time with computers, and nobody thinks of complaining." -- Jef Raskin

  5. #5
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    I didn't really want to disassemble the entire thing, but there will be some serious metal removal goin' on. I don't want to risk any stray chips/dust getting into slots or other critical parts. Better to play it safe. I may end up doing some cable re-routing as well.

    The blower will be mounted on the backplate next to the ports with the intake pointed toward the logic board. There's a small heat sink there (memory controller?) that will benefit from the increased airflow, and it's toward the top of the case to help get the hottest air out.

    I'll be making more holes in the bottom to aid in drive cooling, and building a duct from the 120mm fan to the CPU. The stock Giga fans are whiney, and don't move any more air than a single low-speed 120. They also feed the sink preheated case air not fresh cool stuff. Cooler air supply with less airflow means adequate cooling with less noise. Quieting the box is the primary objective here.

    With the price of gas these days I don't understand why anyone would want to cook with it when there's mesquite charcoal available.

  6. #6
    Join Date
    Mar 2006
    Location
    New Jersey
    Posts
    306

    Default Great job!

    Hi M.Brane,
    You did a good job removing all those stuff. Tried to do that but seems electrical is not my thing. Cant figure the amount of work needed to do that. I did some mods on my Sawtooth sometime ago and got a 120mm fan from my old 9600 and worked fine. Thought I could install a Dual 1.8 but some said that the power supply wont handle the requirements I needed. Ended up using my Sawtooth a DVD player. Well, I did not remove anything except the plastic cover on top. Have enough room to mask white 13 gal. trash bags inside the computer to catch those metal debris and dust. Using a Dremel cutoff tool worked. Took me less than 10mins to do the cutting. TZ gave me a link before and found a circular metal cutting tool but they dont ship here in US. Its from UK.

    (Mod picts)

    Sorry images too big, I'll post them later.

  7. #7
    Join Date
    Mar 2006
    Location
    New Jersey
    Posts
    306

    Default Cutting hole

    Hi, Got the link where to find hole cutters here - http://aqua-mac.com/quicksilvermodsw.html but the I checked the price for those about $89.00 for Q-Max. 79mm hole cutter. Since you have all your electronics taken out, machine shop can punch a hole any size you want. I took mine but, they wanted me to remove all electrical since they use coolant when cutting, but possible. Here are some of the picts after I cut mine. (picts) http://creativisions.com/sawtooth.html
    Goodluck

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