RB25DET RB20DET RB26DETT fan and radiator setup

[Fibre guy]

Yeah I know what your all thinking another one of these threads?!

Just to get down to it. I'm always really picky about what I buy, and now its down to the E-fan & Radiator. All of us running the RB's have problems when it comes to finding a setup that fits AND works. A lot of other people have this same opinion. So, I want everyone to post their RB cooling setups and water temps. Details & pics are a plus!Also, I made an easy search title so that these threads slow down.

[Sil240]

Custom Be Cool Aluminum Radiator. KA/RBSPAL 13" Pusher fan (have another if you need)11"x 2.5" PS cooler mounted on rad next to fan24x12x3 FMICNo Ducting as yet

Haven't ran my car enough to give you temps.But at idle it gets to temp 180 fan kicks on for a min or 2 and turns off.

But.... I don't have A/C or a Condensor.

[Neejay]

- RB25- CXRacing Aluminum Radiator- No AC condensor- 2x 12" e-fans (1 puller, 1 pusher)- DiF fan controller- Prosport water temp gauge (upper radiator hose adapter probe)

Prior to the DiF fan controller, I used to see temps of around 183-186F with the push-in probe.

Now I hardly ever go over 180F. I'm in the middle of installing a FMIC, so I'll update you once it's done with my temps again.
Modified by Neejay at 7:13 AM 4/28/2009

[Tenchuu]

RB25DETNo ACFAL dual pusherGriffin radiatorNismo low temp thermostatnismo N1 pumps***ty temp sensor for autozone relay isolated and set at about 170-180

Never seen it much over 200-220 in the dead of summer with a lazer temp sensor.

[Darius]

- RB25- 3-inch thick Griffin drift spec radiator core - OEM Z32 thermostat (83-84*C)- 2x 12" SPAL pusher fans mounted to the condenser (<----THE KEY )- Soon to have AC (waiting on custom fittings now)- DiF dual fan controller also wired to turn on with AC to keep air flowing past the condenser when stopped or in traffic.- Huge, thick FMIC with stock engine bay undertray. No additional ducting.

Since the SPAL fans were installed, the engine has never gotten above 86*C.

I had some cheap Perma-cool fans installed before the SPALs and they couldn't keep the temps down when the weather was hotter than 85*F outside. Sucked!

[SullivanRacing06]

koyo full aluminum rad, 2 12inch puller fans, 10inch puller fan inbetween my i/c and oil cooler, nismo t-stat, n1 water pump

hope this helps

[RustspecS13]

I'll be running a CXracing radiator, which I got from a junkyard, and Maxima fans on a switch. They are on a hi/low on one fan and a off/hi on the other.

For an IC I have a 3inX6inX27in

Eventually I'll install my FC oil cooler as well.

Ive got an RB20DET, buts its in swap mode for now. I'll repost later with my results.

~Alex

[Fibre guy]

Just to add:I'm ordering x2 CSR Performance 12" electric fans and a FAL adjustable fan controller w/rad. probe. I'm also fabing up a metal plate to replace upper support so I can move my radiator further forward. I don't like cutting supports.<edit: slash that, CSR's are on back order... So now I'm getting single Perma-cool 16" pull fan.>I already have a Mishimoto dual core radiator with calsonic (nissan oem) 13" fan controlled by a 180* on/170* off thermostat switch. (temporary until new fans get here) I also have a huge B&M 11x10 side mount oil cooler, no ducting yet.<new front bumper in the works. It stays around 180*-185* in high 80's low 90's weather at idle and cruising, but heats up when you get on it.
Modified by Fibre guy at 3:03 AM 4/28/2009

[Darius]

I wouldn't put a Perma-cool fan on anything except a trash heap. Everything I've ever purchased with that brand name on it is Chinese-grade. Only thing that worked was a PS cooler, but it's pretty tough to screw that up.

[Neejay]

I edited my original post to reflect my aluminum radiator.

[kouki-gymkhana]

I'm running a Koyo aluminum "racing" radiatorFAL 210 12" puller fansPignose A/C fan set up as a pusherWorking A/CNismo low temp thermostat (will probably swap it out when I buy a Greddy IM)Huge 3" thick FMIC1 bottle of water wetter70:30 mix of water and antifreezeI also have extensive ducting above and below the rad to force air through it, rather than around it. <----This is KEY!

Temps stay in the 75-80C range with normal driving. Once I crank up the A/C, however, it gets HOT...like 90C+ in stop and go traffic on a 90F day.

I will most likely re-design my rad setup and further modify my core support so I can get the stock clutch fan back on there with a proper shroud. The 3 fans I have suck CRAZY amps! BTW, I have McKinney mounts and I've already chopped up the upper rad support to get the Koyo in there with the pullers.

[Carl H]

the OG fan retrofit!

r32 clutch fanno shroudgriffin universal cross flow core for a mustang i think.custom piping18psi pressure caphalf a bottle of water wetterapprox 50:50 mix of water and coolant

cruising i see a constant 82*c, in traffic on a hot day perhaps 88*cpower pulls and hard decel result in drastic drop in temps lowest ive seen it go is 76*c after a long downhill decel from the top of a mountain.



old car but same setup in the current one...works wonders and was cheap!total cost was approx 215$ for radiator and piping.

[Carryl]

rb20det cruising temps between 160 ~ 170*FFlex-a-lite dual pullersno thermostat100 % coolantr32 gtr radiatorno Ac condensor

[SullivanRacing06]

my temps never go above 185 unless im beatin the hell outta the car durnign over 100 f temps

[zerodameaon]

RB25stock KA rad and stock clutch fan. sit at 190 idle highest i have ever seen is 220.but this is all changing soon to a better setup. CA gets way hotter then Maine so yeah.

[Neejay]

RB25stock KA rad and stock clutch fan. sit at 190 idle highest i have ever seen is 220.but this is all changing soon to a better setup. CA gets way hotter then Maine so yeah.

holy s*** that's hot.

[zerodameaon]

if you look at most of these people running decent setups they are at 180 most of the time. 10F isnt to much.

[Neejay]

if you look at most of these people running decent setups they are at 180 most of the time. 10F isnt to much.

I was talking about that 220F. I'm assuming that was only once or twice though?

[zerodameaon]

iv hit that a couple of times during San Diegos short lived heat waves of 95F +. but that will all be fixed in the next few weeks with a bigger rad and E fans.

[Yellow4g63]

Here is my fan and radiator setup

[legit240sx]

rb20cx racing 2" alum. rad2 12" fans push pullnismo thermostat (opens at 160 F i believe)ajustable elect. fan controller (turns on at 180 F)no a/c sucka

cracked and spray painted 240sx oem over flow

[SullivanRacing06]

RB25stock KA rad and stock clutch fan. sit at 190 idle highest i have ever seen is 220.but this is all changing soon to a better setup. CA gets way hotter then Maine so yeah.

220??????

bad motor!

[zerodameaon]

and why would you say bad motor. you relize the KA rad is less then 1in thick right. Ok i relize that i was being lazy not changing over to a proper radiator but why would hot temps be related to a bad motor when the insufficent radiator is staring right at you.

[stevespeed]

I got a Koyo Rad, stock thermostat, and 2 ISIS 12 inch fans,Lets see if this will work!

[rbs14kouki]

greddy rad2 pusher fans nismo thermostat greddy AST

[Romeo_rus]

stock rb25detstock radiator2x12'' ebay 1350cfg pullersautozone electric fan controller nismo thermostat

[mattblancarte]

RB26DETTGriffin Dual-Pass RadTwo 12" SPAL push fans

Cruising around I am at about 65-70 degrees celsius. How well it does at the track depends on the ambient temp. In AZ with 80-90 degrees Fahrenheit ambient I would run at about 96-100 degrees celsius. Here in WA I never go above 90 degrees celsius even at the end of a session.

[Newtype]

im running a 400hp rb26 with the stock radiator and stock clutch fan w/ the shroud... it flows just fine and keeps it at the correct opperating temp while not wasting 500+ dollars on a new setup and theres nothing more reliable.. thx..

[JDMChode]

I'm one the last phase of piecing my RB20DET swap together. I was thinking of running dual 10 in fans and a koyo radiator. Anybody running A/C have problems with heat control. I've heard the condenser generates significant heat and can cause issues. My daily needs to have A/C, so I'm trying to run into a solution before engine gremlins start popping up with my half assed swap.

[Fibre guy]

Don't know, was wondering that myself, but I have pieced my ac together and all I have to do is install it and charge it.Keep the setups coming everyone.