overheating, again....

Discuss the RB20, RB25 and RB26 series engines.
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Audi180
Posts: 183
Joined: Tue Jan 20, 2004 4:03 am
Car: RB26'd S14
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i now this subject have been allready overdiscussed...

but...

all the threads i've found, are about the rb25/20...

now, i have an rb26...

and it's overheating under boost.., wot at 2'nd, and in the end of 3'rd it's to high...

can anyone who uses the rb26 on an s14 help me with this?

i need to know who uses which rad and fans, and where can i get them...and if someone knows his temps under boost...

thanks a lot...

Tom


Ramius83
Posts: 740
Joined: Sat Apr 19, 2003 8:58 am
Car: 1995 240sx SE
Location: Cumming, GA

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Well, help up out here.

What fan setup are you using, and placement of the fans? Is it wired thermostatically, or are they 12v ignition?

etc etc etc.

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Audi180
Posts: 183
Joined: Tue Jan 20, 2004 4:03 am
Car: RB26'd S14
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some custom-god-knows fans

wired to my haltech... starts to work at 80C...

thanks

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s13_rb25det
Posts: 100
Joined: Tue Jun 07, 2005 12:49 am
Car: s13

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my mechnic has a haltech E11 v2 installed in his cosworth and he has a good system figured out...

2 fans...

@80C : one fan starts running@90C : second fan turns on in addition to the one and both run @ a higher rate

that solved his overheating issues...

nick

Bluefire
Posts: 1130
Joined: Fri Jun 06, 2003 6:07 am

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A lot of the cooling tips given in past threads are not motor or even car specific... Please search and read the posts over again, they contain a lot of info

-Bluefire

RB20DETodd
Posts: 3763
Joined: Thu Apr 07, 2005 10:30 pm
Car: 92 Nissan S13 coupe SE RB20DET

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Bluefire wrote:A lot of the cooling tips given in past threads are not motor or even car specific... Please search and read the posts over again, they contain a lot of info

-Bluefire
Thats what i was thinking, overheating is a general problem, Krayton told me about ducting, i made a peice for the bottom between the fmic and the condensor and 2 peices on the side and wow what a differance, but till not good enough for city driving but i have new fans on there way out with a new koyo and a bottle of watter wetter, try the ducting, or find some good fans that flow good cfm's.

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hashiriya13
Posts: 345
Joined: Fri Jan 24, 2003 12:50 pm
Car: Cars, Racing, Cars, Racing

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Depending on how the motor was installed, (kit or crossmember) with a little fab work cutting and ect. the radiator can be moved forward and allow the clutch fan to be used. that will solve allot. There are countless GTR's here in hot *** okinawa with no over heat problems with just the stock clutch fans. I will know first hand with the 26 in a day or two running off a r32 GTST radiator with just the clutch fan. As for 2 fans, pushers with a KOYO I have on my s13 RB25 in socal I had no problem (running off the ignition, always on) When i put the 26 in the 240 when I return my plan is to do some cutting and use the stock fan with one pusher on a temp switch. due to the 26 running hotter. Sorry I don't know any under the hood temps.

RB20DETodd
Posts: 3763
Joined: Thu Apr 07, 2005 10:30 pm
Car: 92 Nissan S13 coupe SE RB20DET

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hashiriya13 wrote:Depending on how the motor was installed, (kit or crossmember) with a little fab work cutting and ect. the radiator can be moved forward and allow the clutch fan to be used. that will solve allot. There are countless GTR's here in hot *** okinawa with no over heat problems with just the stock clutch fans. I will know first hand with the 26 in a day or two running off a r32 GTST radiator with just the clutch fan. As for 2 fans, pushers with a KOYO I have on my s13 RB25 in socal I had no problem (running off the ignition, always on) When i put the 26 in the 240 when I return my plan is to do some cutting and use the stock fan with one pusher on a temp switch. due to the 26 running hotter. Sorry I don't know any under the hood temps.
Clutch fans with the shroud would be badass too bad i cant run it i can barely squeeze my e fans as pullers


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