s13: RB clutch fan setup

Discuss the RB20, RB25 and RB26 series engines.
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Neejay
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Carl H wrote:from the looks of it they are using the skyline radiators which are dual core from the factory ala s14 ka...plenty of cooling with a proper clutch fan.and to think that everyone laughed when i refitted my clutch fan and to have a shop which belts out AMAZING swaps fit them as standard.
hmm...so an R32 alum. radiator should do the trick + clutch fan.

thin + aluminum + clutch fan = win (should)

I flushed the Prestone super radiator flusher out my system last night then added 1 bottle of 50/50 pre-mixed coolant + 1 bottle of water wetter + topped off with distilled water. At idle, around 65F outside with both 12" fans (puller/pusher), the temp wouldn't raise above 162! I had to disconnect the fans to get it up to temperature to allow the thermostat to open. lol

This is without a front bumper on and the hood up though, and without driving the car around and putting a load on it...so we'll see tonight. I'll update.

Still seems like I have a s***load of rust in the system though, and I can't get the block drain bolt off.
Fibre guy wrote:I'm running a 2.5" aluminum radiator. I measured 2.25" between crank pulley and rad, the same for power steering. The bottom radiator support cannot be cut or modded to move my radiator forward. So I measured that if I cut the top in and tilted the radiator forward 2.5" I can fit a 14"x3" puller fan on the left with a 12"x2.5" on right, and have a better flow from intercooler to rad since my intercooler is tilted in the same way to help with cooling and ducting. Plus I won't have to relocate the radiator cap because mine was high to begin with.Also, see the link in my sig that is for fan and rad setups.
I forgot about that thread. I see where I posted before getting the FMIC installed. lol


rb25det250sx
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Car: '96 Nissan 240SX RB25DET powered!!!
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i have a 2 1/2 inch CXracing aluminum racing rad, and 2 12" pullers in my s13..

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Neejay
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rb25det250sx wrote:i have a 2 1/2 inch CXracing aluminum racing rad, and 2 12" pullers in my s13..
Wow, you could fit an extra puller?

I finished everything and put the bumper back on.

It was around 67F outside, and the highest the engine got was 182F and it stayed about 177 while cruising.

I really want to try the aluminium R32 radiator and clutch fan, but I don't want to spend the money on getting another radiator.

rb25det250sx
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im perty sure the r32 rad will not work. its to tall. i had one in my car when i first bought it, but i had to get the KA aluminum one, because my hood wouldnt latch. but yeah i had room for 2 12" pullers. idk what your problem is.

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Carl H
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Car: 1995 Nissan 240SX SE RB30DET

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r32/33 radiators will fit just fine under the s13/14's hood, the aftermarket radiator i have currently on my vh car is an r32 radiator and it closes just fine.way back when (circa 2003/2004) i owned a hatchback with the rb20 i have in my s14 now in it, i used the stock gtst radiator as an upgrade to the ka as the ka simply did not provide adequate cooling for the hot summers here in NC.

rb25det250sx
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well i had a r33 rad, and it fit in the car, i just couldnt latch my hood all the way with it... it would only safty latch..

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Neejay
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Carl H wrote:r32/33 radiators will fit just fine under the s13/14's hood, the aftermarket radiator i have currently on my vh car is an r32 radiator and it closes just fine.way back when (circa 2003/2004) i owned a hatchback with the rb20 i have in my s14 now in it, i used the stock gtst radiator as an upgrade to the ka as the ka simply did not provide adequate cooling for the hot summers here in NC.
I noticed you had to use a little spacer there, underneath the radiator brackets:



Would you happen to remember what size?

I foresee me going this route in the future...R32 aluminum radiator + using my FAL dual 12" pullers OR clutch fan + 1 12" pusher

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Carl H
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Car: 1995 Nissan 240SX SE RB30DET

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i dont remember the exact size off the top of my head, they were in my bolts bin from an intercooler kit i got from the same company and they conicdientally happened to be the same size as the gap...i may have some left over if you're interested.


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