Well, I finally got around to doing some more work with the fan swap. I have some Panaflo fans coming in this week to try, but before I did the swap I wanted to find out how hot the exhaust was with the stock Delta fans. I'll try to get some pics taken a little later (I'm at work at the moment). I routed an 8-10" temperature probe through the grates of the exhaust side and monitored the temperature while watching some tv last night. What I found was very interesting.
Low power with everthing intact: 59C
High power with everything intact: 68C
Low power with intake-side end cap removed (side that covers two 80mm fans): 38C (!)
High power with intake-side end cap removed: 42C
Just a note, all temperatures varied slightly due to the furnace kicking on and off, but I think I was able to get accurate averages by watching the temps throughout the night.
I was amazed at the difference pulling the end cap off made. There are about 6 screws holding it on...it's not real difficult to pull. After slipping the end cap back on the temperature immediately began to climb again. There is some slight light spill with the cap off, but nothing bothersome. Also, I'd recommend pulling the cap off only if your pj is ceiling mounted if you have any pets or children because it exposes the fans. I'll have to get some pictures of the setup and the light spill. When I get the new fans in this week I'm going to re-run the test to make sure that I'm getting proper ventilation. My plan is that if I can keep the temp. below 68C at high power (with the cap on or off) I should be fine. If the fans aren't much quieter or they don't cool it down enough I'll definitely swap the old ones back in.
I have had the intake cap off for the last couple of months with no problems. The fan noise is actually decreased a little with it removed...my guess is that the pj sees the cooler temps and slows the fans slightly. Also there is less of a 'whoosh' noise with the cap removed because the air is not being sucked through the small vents in the cap.
For someone wanting to increase the life of their pj and slightly quiet it down I think this would be an easy modification.
Originally Posted by Nick Smith
I got bored after work today so I decided to see if a fan swap would be possible. Here's what I found:
It looks like their 80mm x 80mm x 15mm, but I'm thinking I might be able to fit some 25mm fans in there.
Anyone know where to get connectors like these? There's a two-pin on the left and a three-pin on the right. I'm hoping to buy the connectors with pigtails already attached so I can just splice the wiring harness from a Nexus case fan and plug it into the board. I don't want to cut the existing fan harnesses.
And I think this is the little booger that's giving many of us fits.
Any help with the connectors would be greatly appreciated!