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Removing Water Oil Cooler Rb25

P.K

By P.K,
in Engines & Forced Induction

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P.K Contributor

P.K

Posted
Posted

Well I've got my Rb25 on the engine stand I figure I'd remove the water oil cooler so I can just mount my oil cooler re locator straight to the block, I know that I need to remove the current stud in the RB25 and replace it with a Oil Filter Stud from a L28 Motor found in the 280z , Just wondering if anyone knows where I could get one of these Stud/Threads , Only place I've found to order them from is in the states and I'm looking at $35 with postage for a simple stuf worth a few bucks.

So does anyone know a part number for this and if so can I get it from Nissan

Or

Does anyone know a place that sells parts from old Z series engines where I could grab this.

I'm sure there are plenty people out there that have removed this pretty useless part from the engine, if I can't find one here, i'll drop the 35 to grab one from the states, its not so much the cost as the time waiting on postage I can't be bothered with.

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kitto Mentor

kitto

Posted
Posted

Thats correct.

Im doing the same thing. Just order one from Nissan. I have. $9 fom memory.

Jf you delete the cooler, you must use a Z418 oil filter, or depending how your filter sits, a Z632 which doesnt have an anti drain back valve.

Im gonna use the Z632.

You need to use one of these filters as when you delete the oil cooler, you delete the bypass valves as well. Z145A doesnt have the bypass valve. Z418 & Z632 do.

boostn0199 Grand Master

boostn0199

Posted
Posted

is there a reason why you're removing it?

the water/oil heat exchanger is great for warming up the oil and keeping at a decent temperature rather than under cooling it :blush:

Id be guessing hes probably going to be running an external oil cooler which really doesnt have the issue or being to cold if its a track car and thermostat if for street.

kitto Mentor

kitto

Posted
Posted

Does the rb20 filter mount have the relief valves??

No, does not. Hence why you must use a Z418 or Z632 filter.

and are they 85psi ones?

Incorrect, the ball bearing relief valves are set to a low pressure, something around 5 - 10PSI.

GT-T 1998 Rising Star

GT-T 1998

Posted
Posted

Wondering if u guys could help me out .. I'm putting a oil cooler in my car with a grex sandwich plate and a new radiator .. I want to get rid of the oil to water cooler on my gt-t can I buy somthing to suit my block

P.K Contributor

P.K

Posted
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Posted

Got a New Oil Filter Stud from Nissan today, one from a RB30, when in prefect.

For those wanting to know, car is track only, running a oil cooler which will do much better then the oil to water cooler this way I've removed plenty of the water lines and got more room.

As for you GT-T1998, you can basically do the same thing, the block on the RB25Neo is pretty much the same, the thread will be exact same, so just go to nissan and ask for a Oil Filter Stud from a RB30, I can post part number up later, cost me $19, Will be worth it.

W0rp3D Grand Master

W0rp3D

Posted
Posted
I've removed plenty of the water lines and got more room.

My car is a street car and I have a leaking water hose under there some where and I want to get rid of some hoses so Im bypassing it with out an external cooler, I can't see there being that much of a problem but just in case i will be fitting a sandwich plate with an oil temp and pressure gauges, just wondering if the sandwich plate will fit with the cooler left in place, if so Im assuming I just use the standard filter, if not I just use one of the filters mentioned above?

GT-T 1998 Rising Star

GT-T 1998

Posted
Posted

Got a New Oil Filter Stud from Nissan today, one from a RB30, when in prefect.

For those wanting to know, car is track only, running a oil cooler which will do much better then the oil to water cooler this way I've removed plenty of the water lines and got more room.

As for you GT-T1998, you can basically do the same thing, the block on the RB25Neo is pretty much the same, the thread will be exact same, so just go to nissan and ask for a Oil Filter Stud from a RB30, I can post part number up later, cost me $19, Will be worth it.

ohk .. so i can mount the oil filter stud from a rb30 straight onto the block? kinda like the rb20 mount?

do you have a image of it ?

is it as easy as putting an rb20det oil filter housing on ... ive had 2 of them so far both been cracked then went to another wrecker today and he had 1 with a crack in it to seems like no1 has them and its 15days for nissan to order 1 in from japan for 140bucks which i think is an ok price but my cars been off the road for 11days i want to try and have it fixed :( miss driving it .

i seen on a post today someone put the big gold plug from the stock cooler onto a sandwich plate.. is that necessary what is it?

  • 2 weeks later...
W0rp3D Grand Master

W0rp3D

Posted
Posted
I can post part number up later, cost me $19, Will be worth it.

Any chance of getting that part number, went in to get one today and they told me that its a whole unit not just the stud.

Another part i will be changing because of the removal of the heat exchanger is the fitting at the back of the block, on the 25 it has a straight pipe that comes out, a hose then joins that to another bit of pipe that has pipes for the throttle body hose and heat exchanger hose and a bracket to mount it to the back of the manifold, if you use the one off the rb30 it is just the main pipe with a pipe running off that for the hose to the throttle body, much easier then the 25 set up, the part number is NI-14075-42L01 price was $59.10, not cheap but well worth it instead of dodgy fixes i think.

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