Overclock.net › Forums › Cooling › Air Cooling › Cooler Master V8 with 3 fans
New Posts  All Forums:Forum Nav:

Cooler Master V8 with 3 fans

post #1 of 6
Thread Starter 
I have a CoolerMaster V8 and wanted to improve the cooling capacity. I wanted to put three fans on the unit. I checked the web for advice. Others have suggested doing this but most people said it was impractical as there was no way to mount the two external fans. I did mount three fans on my unit am a pleased with its performance. It is an easy mod. I used threaded rod cut to length as tie rods to mount the fans. I decided to use three Scythe 120x25mm SlipStream PWM SY1225SL12H-P . I chose these because of the air flow of 24.5 to 110.31 CFM, a moderate fan noise of 7.5 ~ 37.0 dBA at 500 (+200)rpm - 1.900 (±10%) rpm. I also added a 120mm Chrome Metal Fan Guard between the left side fan and the V8 radiator fins to protect the exposed fan blades. I used an Akasa PWM Signal motherboard Cable #AK-CB002 to connect the three fans to the mobo CPU fan socket so that I did not have to add a separate fan controller. Additionally you will need some inexpensive hardware that is available at most hardware stores. For the tie rods I used 8-32 threaded rod I cut into four pieces of about 7.25 inches long. Originally I cut them longer but since then modified them to 7.25 inches. They could probably be slightly shorter. When cutting the threaded rod to length it is a good idea the spin on two regular sized nuts, position them on each side of where you want to cut the rod. The reason is that cutting the rod will deform the threads on the cut ends of the rod. Once cut to length spin off the nut and that will restore the deformed ends of the cut rod. If you don't do this it could be difficult to put good nuts onto the rods during final assembly. I used lock nuts on the rods. I also used washer between the fan housing and the lock nuts. I am not sure of what these washer are called as they were not a standard flat washer. These washers had a slight cupping to them and on one side was a piece of rubber on it that acted like a cushion. I am sure the regular flat washers would work fine, its just that when I went to my local hardware store for my supplies I found these washers and decided to try them. It is important to install the nuts onto the tie rods to the inside edge of the left side fan, as putting them on the outside edge makes the tie rods and nuts stick out to far beyond the fan so that the unit is to big or long to fit into the case, interfering with the rear case fan.

Taking the V8 apart: On the bottom of the center fan on the right side are two screws that go through a fan support on the V8 and into the bottom of the center fan. On the top of the V8 is the plastic cover piece that has the V8 symbol on it. It is held in place with four metric screws. Take these out with a small allen wrench. I think the allen wrench that came with the V8 fits these screws. Lift off the cover plate with the center fan attached to it. The center fan is attached to the cover plate with a pair of plastic clips on the underside of the cover plate. Spread the clips and the fan comes out. If I remember there might have been sticky double sided tape between the top of the fan and the underside of the cover plate. Any way separate the fan from the underside of the V8 cover plate.
I originally planed on drilling holes through the cover plate to insert the tie rods through but decided that was impractical as the holes would have to go through both the edge of the cover plate (no problem with that) but also through the plastic clips that hold the fan housing. That was the problem. Turns out that drilling was unnecessary as the tie rods on the top lay across the top of V8 cooling fins are a tight enough fit that the top of the fan does not require additional support.
It is not necessary to replace the top V8 cover plate once the mod is completed. I only did it as it seemed aesthetically more pleasing to look at. It might possibly help direct some of the fan air flow, but probably not by much. When replacing the top cover plate you have to change the original screws as the cover plate has to lay on top of the tie rods and the inside plastic top fan clips are not used. Consequently the cover plate is raised up by the amount of the diameter of the tie rods. I went out and purchase four metric replacement screws that were slightly longer than the original ones. The new screws were metric M3 x 16 or was it 18 by .5 pitch. I don't recall if the length was 16 or 18 as I bought four of each and used the one that's length was best.
Below are the links to the fan and cable specs:
http://www.scythe-usa.com/product/acc/109/sy1225sl12hp_detail.html

http://www.akasa.com.tw/update.php?tpl=product/product.detail.tpl&no=181&type=Cables&type_sub=Fan%20Cable%20Adapters&model=AK-CB002

This is a big unit when the mod is complete. I am using this in my HAF-x full tower case and there is enough room for it. When I had it in my Antec mid tower the space between the left side of the fan and the rear case fan was close, less than .5 inch. Tight but it did fit. When I had it in my mid tower I changed my rear case exhaust fan to a matching Scythe slip stream but a three pin that matched the three fans I put on the V8. I used a Scythe slipstream # SY1225SL12SH. This way the air flow out of the case matched the output from the V8.
I am running an I7-930 on a gigabyte GA-X58A-UD3R with 6 Gb Ram. I have not over clocked it, just use the gigabyte utility to adjust the speed. My no load idle temps on the four course are 39, 36, 40, 33 with my GPU at 37 all Celsius
post #2 of 6
Well if it works for you then great, looks pretty beefy biggrin.gif

On a different note, is it the picture or is that GTS250 bent upwards?
    
CPUMotherboardGraphicsRAM
i5 2500k @ 4.5GHz 1.4v ASRock Z68 Extreme3 Gen3 MSI R9 290x Gaming 2x4GB Corsair XMS3 1600 
Hard DriveHard DriveCoolingOS
Crucial BX100 250GB Toshiba 2TB Thermalright Macho 120 Rev.A Win 10 Sexy Phwoar bits 
MonitorKeyboardPowerCase
LG 29UM68 (2560x1080) CM Quick fire rapid (blacks) SuperFlower GG HX 650W FD Define R4 White Window 
MouseMouse PadAudioAudio
Logitech G502 CM SWIFT-RX XXL Xonar DS (LME49860NA) Epiphany Acoustics EHP-O2 
Audio
Superlux 668b 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
i5 2500k @ 4.5GHz 1.4v ASRock Z68 Extreme3 Gen3 MSI R9 290x Gaming 2x4GB Corsair XMS3 1600 
Hard DriveHard DriveCoolingOS
Crucial BX100 250GB Toshiba 2TB Thermalright Macho 120 Rev.A Win 10 Sexy Phwoar bits 
MonitorKeyboardPowerCase
LG 29UM68 (2560x1080) CM Quick fire rapid (blacks) SuperFlower GG HX 650W FD Define R4 White Window 
MouseMouse PadAudioAudio
Logitech G502 CM SWIFT-RX XXL Xonar DS (LME49860NA) Epiphany Acoustics EHP-O2 
Audio
Superlux 668b 
  hide details  
Reply
post #3 of 6
Wow props on that, makes me wonder though, how heavy is that V8 with all fans? I figure it'd be at a point it may make the MB bend a little over time.
Main
(14 items)
 
  
CPUMotherboardGraphicsRAM
2500k ASROCK P67 Extreme 4 Gen3 Sapphire 7950 Dual X 8GB GSkill Ripjaws@8-9-8-23 1600 
Hard DriveOptical DriveCoolingOS
GSKILL Phoenix Pro 120gb SSD, 3x 1.5TB hdd, 2tb Samsung 24x dvd-rw Thermalright Silver Arrow with 3 TY-140 fans Win7 X64 
MonitorKeyboardPowerCase
Sharp 40" Aquos LCD TV as main monitor 2 ASUS 2... Thermaltake TT eSports Meka G1 Corsair TX750 HAF 932 
MouseMouse Pad
G400 Artisan Hien VE L Samurai Black 
  hide details  
Reply
Main
(14 items)
 
  
CPUMotherboardGraphicsRAM
2500k ASROCK P67 Extreme 4 Gen3 Sapphire 7950 Dual X 8GB GSkill Ripjaws@8-9-8-23 1600 
Hard DriveOptical DriveCoolingOS
GSKILL Phoenix Pro 120gb SSD, 3x 1.5TB hdd, 2tb Samsung 24x dvd-rw Thermalright Silver Arrow with 3 TY-140 fans Win7 X64 
MonitorKeyboardPowerCase
Sharp 40" Aquos LCD TV as main monitor 2 ASUS 2... Thermaltake TT eSports Meka G1 Corsair TX750 HAF 932 
MouseMouse Pad
G400 Artisan Hien VE L Samurai Black 
  hide details  
Reply
post #4 of 6
OP may I suggest removing that rear exhaust fan behind the V8? That might actually be hurting your cause.
Quote:
Originally Posted by yoshi245;12892188 
Wow props on that, makes me wonder though, how heavy is that V8 with all fans? I figure it'd be at a point it may make the MB bend a little over time.

That really depends on the type of mount that CoolerMaster uses. The same MB warpage can be asked of our coolers (NH-D14 and Silver Arrow) but because the mounts are top notch we don't need to worry much about MB warpage.
Black Sand
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600k @ 4.8GHz ASUS Maximus IV Extreme-Z EVGA GTX 580 SLI 8GB Corsair Dominator GT @ 1885 MHz 
Hard DriveOSMonitorPower
60GB Mushkin Callisto Deluxe +1TB WD Caviar Black Windows 7 Home Premium ASUS VW246 Corsair HX-850 
Case
HAF 932 
  hide details  
Reply
Black Sand
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600k @ 4.8GHz ASUS Maximus IV Extreme-Z EVGA GTX 580 SLI 8GB Corsair Dominator GT @ 1885 MHz 
Hard DriveOSMonitorPower
60GB Mushkin Callisto Deluxe +1TB WD Caviar Black Windows 7 Home Premium ASUS VW246 Corsair HX-850 
Case
HAF 932 
  hide details  
Reply
post #5 of 6
Thread Starter 
The weight is not a problem. The V8 with one center fan is 865 g. Each of the scyth fans is 121 g each for a total of 1107 g. The NH-D14 is 1240 g with the fans. The mounts on the V8 are very good and solid. I don't believe the rear case fan is impeding the air flow. It is a 140 x 25. I don't know the CFM of it. There is enough space behind the V8 for air to also go out the top with its 200 x 30 fan
post #6 of 6
Mmm, everyone loves reading walls of text.
/hwaw
(20 items)
 
  
CPUMotherboardGraphicsGraphics
Intel Core i7 3770k @ 4.3ghz 1.160v ASRock Z77 Extreme6 Gigabyte R9 290 Windforce Sapphire R9 290 
RAMHard DriveHard DriveHard Drive
2x4gb Samsung RAM @ 2000mhz 9-10-9-28 1.425v OCZ Vertex 4 Hitacho Deskstar Crucial M550 
CoolingCoolingCoolingOS
Corsair H80 (CPU) Thermalright Spitfire (GPU) Gelid Icy Vision (GPU) Windows 7 Ultimate 64-bit 
MonitorMonitorKeyboardPower
BENQ GW2450 Asus PB278Q Cooler Master Quickfire Rapid Seasonic 750w  
CaseMouseMouse Pad
Black Interior HAF 932 Roccat Kone  Artisan Hien Hard 
  hide details  
Reply
/hwaw
(20 items)
 
  
CPUMotherboardGraphicsGraphics
Intel Core i7 3770k @ 4.3ghz 1.160v ASRock Z77 Extreme6 Gigabyte R9 290 Windforce Sapphire R9 290 
RAMHard DriveHard DriveHard Drive
2x4gb Samsung RAM @ 2000mhz 9-10-9-28 1.425v OCZ Vertex 4 Hitacho Deskstar Crucial M550 
CoolingCoolingCoolingOS
Corsair H80 (CPU) Thermalright Spitfire (GPU) Gelid Icy Vision (GPU) Windows 7 Ultimate 64-bit 
MonitorMonitorKeyboardPower
BENQ GW2450 Asus PB278Q Cooler Master Quickfire Rapid Seasonic 750w  
CaseMouseMouse Pad
Black Interior HAF 932 Roccat Kone  Artisan Hien Hard 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Air Cooling
Overclock.net › Forums › Cooling › Air Cooling › Cooler Master V8 with 3 fans