The standard pumps are pretty good, I run a modified pump that gives about 80 PSI even under the harshest conditions it still reads 60 psi (long sweeper 1G cornering 110 heat 225 water temp last lap etc.) Also the pump is adjustable........if you have to get a modded pump.

Tom

Hi Milan,
The pump may be OK but just have a sticky relief valve?
If you are game it may pay to check out the relief valve to see if you can ascertain if its just stuck open due to a bit of grit or somesuch.
Undo the hex headed fitting and remove it - be careful as it has a spring behind it. Next you need to get the pressure relief valve plunger out of the pump body. If its stuck expanding circlip pliers may do the trick.
If this fails and you are feeling brave place an oil drain container under the pump area, wrap the pump body loosely with a rag several times covering the open hole and start the engine, give it a rev and see if the piston loosens off and moves out of the pump body.
If it comes out you can inspect the surface for any seizure marks and dress it up as required. Push it in and out of the pump several times to check it is OK. If it feels OK clean, reassemble and try it.
Good Luck
Larry

New std pump very good and senceable. But I just love the thought of dry sumps

Send me a pm with your phone no and i'll talk you thru it,but the chances are about 98:1
Cheers

Hey thanks guys for heads up. I just rang Bursons and they say replacement oil pump is $280.

Ill keep searching around and see whats the best price i can find.

Just quickly how can i tell if i have a GX head/motor?

Milan,i've never had an oil pump failure(including competition)in all my experiance to date.A stockie will pump 50-60 psi all day,just get a new one.
Cheapa auto is another good parts joint.

option 4 call bursons and get another oil pump... not super expensive and they have them in stock.

Dry sump is required in some applications but for 99.9% of us, the wet sump works a treat.
Check with any of the replacement parts suppliers & I'm sure that you will be able to source a pump through them without difficulty. Repco & Supersleep come to mind but there are many others.
The pumps were supplied to Datsun/Nissan by vendors, or outside manufacturers & they didn't stop providing replacements just because Nissan decided to discontinue servicing this part.

Option 2 is to make up a high volume pump by utilising the rotating parts from an L series pump & an A series pump.
The conversion is fairly straightforward but it must be remembered that the hole in the pump body is 12mm while the L series shaft is 1/2" [12.7mm] In my view, the best solution is a custom made stepped shaft that has no slot in the end like the L series does, is 12mm where it passes through the pump body & 1/2" where it press fits into the rotating pump element.
A second A series pump body is then sacrificed to make a spacer to extend the length of the A series pump as the L series parts are the same diameter as the A series parts, but longer. A billet spacer can be used instead if one was of a mind to make one.











Option 3 is to secure for yourself one of the factory competition oil pumps. These are a bit hard to find since they didn't sell a lot of them but they are around as I now have two of them & another forum member has recently secured one also, all within the last year or so.




Just as an aside, the majority of Datsun race engines use a stock oil pump because the volume & pressure output are regarded by many to be quite adequate.

Have you thought about "DRY SUMP" . If you have a talk to some of those marine motor outfits up at Coomera / Yatala or that ski boat fella on Nerang Rd at Ashmore there, They could sort out a dry setup. I did it years back in my V8 Ford ute. I ended up with a larger capacity (12ltr) better cooling and filtering system and it was all electric. Less load on the motor= more power and rpm. They may even be able to help with ingition bits? Just a Thought Also for a std Hi Vol Hi Press setup check out Phills Rotarys and Fast Fours in Bris. He does stock Datsun performance bits. I think he is on Bris North.

Hello guys

Needed some advice. It looks like i will be needing to purchase a new oil pump as mine is not working as per normal operation. It looks like the pressure release valve is sticking and causing my motor to run without oil.

Could you guys tell me where i could locate a aftermarket oil pump for an A14 motor? I would like something a bit better than the standard one if possible.

I am also chasing a high performance distributor and if anyone here would also be able to point me in the right direction.

Thanks so much in advance.

Milan