Jump to content
SAU Community

Recommended Posts

With my block out to get honed, I'm just prepping all my auxiliary components in my mean time. I took my oil pump apart to inspect and repack it with assembly lube and either haven't noticed this in the past or found my answer and can't remember. What exactly is the regulator washer that the manual mentions replacing? I don't have one and from the manual it seems to seal the regulator plug to the housing but I can't see it on any pictures of new pumps either.

Can anyone fill me in? I'm presuming this was phased out as I also can't find a replacement part in epc. 

image.thumb.png.72aa050883f1b81a0786470b6324dfd0.png

 

Image of a new pump. Can't see a washer there either.

image-117__91243.1529961945_17a87694-5fd9-4424-ac75-d0dc8ad1c9d5_1020x665.thumb.webp.901dbd7fb5fa731beb6f2db25d26e9d0.webp

Edited by TurboTapin
Link to comment
https://www.sau.com.au/forums/topic/486184-rb25-oil-pump-regulator-washer/
Share on other sites

22 hours ago, TurboTapin said:

With my block out to get honed, I'm just prepping all my auxiliary components in my mean time. I took my oil pump apart to inspect and repack it with assembly lube and either haven't noticed this in the past or found my answer and can't remember. What exactly is the regulator washer that the manual mentions replacing? I don't have one and from the manual it seems to seal the regulator plug to the housing but I can't see it on any pictures of new pumps either.

Can anyone fill me in? I'm presuming this was phased out as I also can't find a replacement part in epc. 

image.thumb.png.72aa050883f1b81a0786470b6324dfd0.png

 

Image of a new pump. Can't see a washer there either.

image-117__91243.1529961945_17a87694-5fd9-4424-ac75-d0dc8ad1c9d5_1020x665.thumb.webp.901dbd7fb5fa731beb6f2db25d26e9d0.webp

Weirdly I see a flat washer on aftermarket pumps but as you said it doesn't seem like new OEM pumps have it. EPC doesn't break out the regulator as a separate component either. I'm guessing if the pump came that way it's safe to use as-is. 

Meh, what's the worst that can happen? If is is supposed to have a washer, and:

  • the spring retainer seals reasonably well on the surface, maybe just allowing a little bleed of oil out, and
  • the spring does not coil bind when compressed that little extra bit, then

the end result will be slightly higher relief pressure setpoint, and no other noticeable effects.

It's purpose will be to stop the regulator plug from leaking oil.

As GTS said, if it seals properly, it will mainly just have the effect of slightly higher oil pressure. I'll assume tolerances/fitment in the relief valve aren't that close that the washer being missing won't let it vent at 100% capacity too.

12 hours ago, joshuaho96 said:

Weirdly I see a flat washer on aftermarket pumps but as you said it doesn't seem like new OEM pumps have it. EPC doesn't break out the regulator as a separate component either. I'm guessing if the pump came that way it's safe to use as-is. 

 

11 hours ago, GTSBoy said:

Meh, what's the worst that can happen? If is is supposed to have a washer, and:

  • the spring retainer seals reasonably well on the surface, maybe just allowing a little bleed of oil out, and
  • the spring does not coil bind when compressed that little extra bit, then

the end result will be slightly higher relief pressure setpoint, and no other noticeable effects.

 

6 hours ago, MBS206 said:

It's purpose will be to stop the regulator plug from leaking oil.

As GTS said, if it seals properly, it will mainly just have the effect of slightly higher oil pressure. I'll assume tolerances/fitment in the relief valve aren't that close that the washer being missing won't let it vent at 100% capacity too.

 

This is a pump I have used in the past; no oil ever leaks or gets past the regulator plug.I was trying to understand what caused Nissan to not only mention it in their manuals but to also state it's a replacement part yet the part cannot be found on my pump or on any new pumps and there doesn't seem to have ever been a replacement part#. 

First time I've noticed something strange like this from NIssan. 

 

 

17 hours ago, TurboTapin said:

 

 

 

This is a pump I have used in the past; no oil ever leaks or gets past the regulator plug.I was trying to understand what caused Nissan to not only mention it in their manuals but to also state it's a replacement part yet the part cannot be found on my pump or on any new pumps and there doesn't seem to have ever been a replacement part#. 

First time I've noticed something strange like this from NIssan. 

 

 

I have seen this happen in cases like the R33 GTR where they eliminated the ATTESA actuator rod retaining clip to save 5 cents. Parts diagram references it, the actual part doesn't. Also if you try and look up the specific retaining clip on an R33 GTR it resolves to nothing. But it exists on R32 GTRs as I discovered a week or two ago.

  • Like 1

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • I couldn't wait But, the black constant tension hose clamps were too thick and there wasn't enough clearance at the T/B and I couldn't get it to seat properly, so I had use a silver one there I also added some 3" silicone over the alloy bit that goes through to hole on the radiator support as it looked like it was sitting on the edge of the hole in the radiator support, I never noticed a rattle or anything, but there was a witness mark It is basicly done, and I can live with the silver hose clamp at the T/B, I will get a black clamp for the head vent though where it is attached to the bulkhead fitting  It never stops...LOL, only issue now with the shock tower brace is it slightly touches the under bonnet liner now, if I leave it it will either wear some paint off the brace where it touches, or damage the liner, so I removed the liner to see what I have to work with, with the liner removed I have about 20mm of clearance, but sadly the middle part of the underside of the bonnet is only dusted with paint and looks crap, so I cannot have that, but.... as I have a roll of Carbuilders premium under bonnet insulation in the garage laying around that is only 5.5mm thick (we were going to use it on the boys Patrol, but he crashed the front of it a few months and it was written off, hence why he now drives my old Honda Accord Euro), I'll use the OEM liner as a template and get the Carbuilders stuff fitted up to cover that dusted paint up
    • You have a knack for photography my friend. It makes the 86 look like a complete bucket. The 34 went with you to Europe and back. It's special. (we all feel the same about our 'shitboxes' that every bystander seems to absolutely love)
    • It's been quite the ordeal but hey, at least you figured it out.
    • The final part arrived today to un-clampify and simplify the intake Who would have though a 1/2" hose stainless bulkhead fitting designed for below waterline bilge pumps would be what I needed Test fit on a 3" offcut I had laying around to see if it would work, and it worked a treat All going well the intake will be on its "final version" tomorrow 
×
×
  • Create New...