Water Pump Replacement RB25/R33

[dAVE]

Okay 3rd time lucky with this post (damn forum errors)....

I am replacing the water pump on my rb25det - will be picking it up from local Nissan dealership.. is the RB30 unit fine to use?

cheers,

dave

[dAVE]

Also, heard that you can get these from autobarn, but typically they dont have it listed so cant help... and part numbers would be great thanks

[sidewaymambo]

Hi, Dave

1) after market VL water pump from repco for $80.

2) Nissan part no: 21010-21u25 , $120

[dAVE]

Cheers for that... Also the N1 water pump suits and is around $160 from Nissan I found out. Im thinking I will go the after market... can you see any problem with that?

[sidewaymambo]

mine is $80 VL aftermarket, when my old pump off the car, I could not really see the difference (a little bit on the fin, otherwaise the same), and it works fine to me..

The N1 seems big, should provide more water flow..however mine is fine with VL..

[predator]

The aftermarket one also available is "powermax" comes in a green box.. can get from Supercheap.. Around $70

I think the N1 could be overkill on a street car.. Apparently people do notice some cooler temps, but I've never had overheating problems. Maybe on a track car coul be worthwhile, but otherwise..

[dAVE]

Gavin woods recommends N1's when he does the 100km service. Few SAU people have them now. Will go into Autobarn / Supercheap tomorrow and get myself a VL RB30 water pump

[benl1981]

Do you guys have Series 1 RB25DETs?

Apparenlty one bolt hole is different..is that a problem???

Thanks

[Duncan]

Not sure about the series 1 RB25, but the 32 GTR and 33/34 GTR do have different pumps, a longer hole needs to be welded up for use on the 32 gtr.

[K_E_V_I_N]

Yes, one bolt hole is different for the S1, it also has one less fin.

[(B1) MR_fanny]

[SLYDA]

Just ran into this problem tonight. :S its def different!

[NZM.031]

yeh you have to modify the n1 pump, an rb30 one will work fine.;

also read when i was doing it, that the n1 pump, with its larger spacing and one less blade, is not suited for traffic situations, great on the open stretch or track, but idling away it doesnt flow as much... as its designed for higher than stock rpm, hence the larger space and one less blade.

[s13rb20pplater]

thought id bump this thread as the question is asked often

so the vl 3.0det wp, is compatable with the rb20det and rb25det?

[bozodos]

Yeah I'd like to know this as well - my RB25 water pump is leaking so looking at a possible replacement.

[BH_SLO32]

Yeah I'd like to know this as well - my RB25 water pump is leaking so looking at a possible replacement.

The RB25 water pump has an elongated hole for the small bolt on the top side of the pump, the other RB pumps don't have the elongated hole. The location of the small bolt hole in the RB25 blocks is different to the RB20 and Rb30 and consequently if you use an RB20 or RB30 water pump you won't be able to install the small bolt. All the other bolts however, align correctly.

I have found in the past that Nissan is cheaper to buy an RB25 water pump than Autobahn.

[bozodos]

So therefore I'd be best off sticking with the OEM one then, rather than trying an aftermarket RB30 replacement?

[sneaky1]

my water pump has f$%^&d itself last night. rang autobarn and they said they all the same. rang supercheap and in 3 diff books he was looking through he had 3 diff answers.

what the hell is goin on with this shit???

[DjeMz]

trust me after a massive headache of doing the water pump at home (3 times)... u you all know timing belt/harmonic balancer has to come off?

just go to nissan, buy the RIGHT pump for ur car and have less headaches!

Edited January 6, 2009 by DjeMz

[boiracer]

biggest problem ive had so far is assuming the guys at autobarn/anywhere know what theyre talking about...WRONG!!!!