urgent question....

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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well i've decided to fix my cooling problems...

so i've ordered the koyo radiator, and later today i'll order the flex a lite pushers, n1 pump, nismo thermostat, and rad cap...

now, i must know, what kind of radiator hoses should i get?

will the RB ones fit for sure?

it's an S14 with the rb26...

thanks a lotTom


s14 2510's
Posts: 605
Joined: Tue Mar 15, 2005 9:01 am
Car: 96 s14 rb26 2510's fully built, 91 s13 sil truck rb20 in works

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Did you order the koyo for an s14. I found a hose that would work for the top one. then I had to get a universal radiator hose for the lower one. What radiator were you using originaly. if it was the s14 one the hoses should be the same.

Sil240
Posts: 2973
Joined: Mon Apr 28, 2003 5:26 pm
Car: Nissan S13 "The One Cam Wonder"

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how can the stock S14 lower hose fit??The RB is 11 inches longer than the KAOr does it fit but you just have to shorten up the straight part?I bought all universal flex hoses, so far but they are not exact. Im kinda weary about it

What lower hose is everyone else running?

gawdzilla
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Joined: Sat Sep 18, 2004 11:51 am
Car: none

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there are 2 s14 koyo radiators. one for SR, and one for KA. Make sure you get the KA one, where the in/out is on the RIGHT hand side. otherwise running hoses will be a pita.

i have the same setup minus the fancy rad cap. my car doesnt go above 67C driving around. its a pretty good setup. get an adj. thermostat for the fan control.

i'm running a random toyota rad hose from the lexus dealership? works well for me, and the shape is decent. IIRC, i might have cut it a bit to shorten the length. as long as you have something in the general shape, should be ok

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Audi180
Posts: 183
Joined: Tue Jan 20, 2004 4:03 am
Car: RB26'd S14
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of course i've got the KA one...

i have it all set but the hoses...

no one tried to use the rb ones?


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

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For the upper hose, I re-used the KA one. There is a potion of the upper KA hose, that if cut correctly, you can use it. As for the lower one, I re-used the one that came on the RB, so yes, the lower radiator hose fit perfectly on my RB26.....


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