I purchased a OEM waterpump off of a guy on ebay for my Rb20. He stated that in the auction the pump was from his RB20. After getting the pump, I went out to put it on my motor on the engine stand, but noticed that it was the notch like the Rb25 pump. Ive heard that this will not work on the Rb20, but he replied he had it on the car for 5000k miles and it worked just fine. Is this true, or should I just sell the damn thing and buy the Rb20 water pump from NismoParts? Any help would be greatly appreciated, I went through 7 pages on search related topics but couldnt find an answer.
-Seth-
Quick Rb Water Pump Question. True or False?
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nizmo zilvia
- Posts: 751
- Joined: Thu Jul 07, 2005 5:09 pm
- Car: 95 240sx w/ S14 SR20 Blacktop
Re: (nizmo zilvia)
Thanks bro. Ive bought all of my gaskets and manifold studs from him last week. Guess Ill give him a call tomorrow, forgot to order my tensioner and idler pulley, so I needed to call him anyways....lol
Re: (BoostsFed)
RB25/RB26 Water pump will NOT work on RB20.
Let me find my old post and quote it here...edit: zerothread?id=226242
The slot will expose the water passageway underneath and you will not be able to get the pump to seal. In that drawing, the pink line shows the water passageway, the yellow is the slot outline and the light blue is where you'll see the leak. The gap that is created by the slot is bigger than can be safely sealed with RTV.
Sell that pump and get an RB20 pump with the small hole. It's possible the later/earlier RB20s have slightly different passageways; I have an older silvertop with "RB20" timing cover, and there is no way the 25 pump will work on my engine.
Let me find my old post and quote it here...edit: zerothread?id=226242
The slot will expose the water passageway underneath and you will not be able to get the pump to seal. In that drawing, the pink line shows the water passageway, the yellow is the slot outline and the light blue is where you'll see the leak. The gap that is created by the slot is bigger than can be safely sealed with RTV.
Sell that pump and get an RB20 pump with the small hole. It's possible the later/earlier RB20s have slightly different passageways; I have an older silvertop with "RB20" timing cover, and there is no way the 25 pump will work on my engine.
Thats really interesting because I have been running an rb25 pump on my rb20 for about a year now with only minor overheating problems which I attributed to a small radiator. Now I am rethinking this. I sealed the pump really well with RTV, but perhaps that is all that is holding the coolant in, yikes. Damn it, now I have to go and tear it apart again before summer :-( . Oh well, good chance to spruce the motor up :-).
Re: (Jesse J)
Hi Jesse, do you have an early or late RB20? The leak on mine was so bad it wouldn't hold any pressure. So I don't see how it could be sealed and work under pressure with only RTV, unless the block passageway is machined slightly different on our engines.
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nizmo zilvia
- Posts: 751
- Joined: Thu Jul 07, 2005 5:09 pm
- Car: 95 240sx w/ S14 SR20 Blacktop
Re: (nizmo zilvia)
If its in good shape, and you don't want a small child for it send me an email.
I should swap mine when I do the timing belt.
I should swap mine when I do the timing belt.
Re: (Jesse J)
[QUOTE=Jesse J]I have an earlier rb20det with the "rb20" timing cover, I guess I will be selling it now, 50 dollars shipped sound good for the neo rb25 pump? ill email you.[/QUOTE
Yeah I could do $50 shipped. My email address has changed since I first joined the site, I need to change it. Email is [email protected] Paypal address is (the wifeys) [email protected] please be sure to add 3% for paypal fees. Please send me an email to let me know when payment is sent so I can get it shipped out.
Yeah I could do $50 shipped. My email address has changed since I first joined the site, I need to change it. Email is [email protected] Paypal address is (the wifeys) [email protected] please be sure to add 3% for paypal fees. Please send me an email to let me know when payment is sent so I can get it shipped out.
Re: (s14-240sx)
sorry to thread jack seth, but that turbo ends tonight. got 3 hrs left. wish us luck. its up to 77. id love to see it breach 100. were weel be happy
Re: (s14-240sx)
s14-240sx wrote:I was talking about selling the pump to 240z4u, I have a neo rb25det waterpump I dont need.Jesse J wrote:I have an earlier rb20det with the "rb20" timing cover, I guess I will be selling it now, 50 dollars shipped sound good for the neo rb25 pump? ill email you.[/QUOTE
Yeah I could do $50 shipped. My email address has changed since I first joined the site, I need to change it. Email is [email protected] Paypal address is (the wifeys) [email protected] please be sure to add 3% for paypal fees. Please send me an email to let me know when payment is sent so I can get it shipped out.
Re: (Jesse J)
Sorry I misread it.