N1 Pumps Vs Nismo Pumps

[GTRsean]

Just bringing up another thing on RB oil pumps.

Sydneykid and others have already brought up plenty of info on the various oil pumps and setups available at the moment.

I just want to know who has had any experience with the NISMO oil pumps that are available as well. They are roughly $900ish.

They are not N1 oil pumps, so they must be different, stronger?

Cheers

[N1GTR]

for that sort of money look at the JUN pump

[bnr#@]

Ive got a nismo oil pump and had no issues with it so far 10000k's so far

[R32 Driver]

that money get a JUN, GREX or Tomei all around the 1.1-1.2k delivered

if you got bulk keshhh HKS 3.2k

[SXR]

Nismo has the same flow as standard but has the harden gears.

[PHA71L]

jun FTW!

[GTRsean]

Jun....hmm, better save up some more!

Here's a pic of a stock r33GTR pump vs an N1 pump I have pulled apart.

Wider and bigger gears, stiffer oil relief spring, more robust and flow friendly housing and a different shape pressure relief valve.

Haven't seen the inside of a Nismo pump.

[GTRsean]

Okay, I'm going to use an N1 housing I have lying around and buy a new billet gearset that is made to suit the housing. It'll cost $550 for the gears.

They are CNC machined billet. The material they use doesn't require hardening.

Only doing this as I already have an N1 pump with gears I ain't gonna use.

[J'z-R33]

For a tag more you can get a Reimax Oil Pump Gear Kit. They are made from high quality chromoly. Something to think about..

[Martin HKS]

if you got bulk keshhh HKS 3.2k

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[T04GTR]

the n1 pump has narrower gears. differnt tooth profile and count make it flow more. and they are a harder gear material.

edit: lol niether of them is a n1. dont know what the bigger one is but it aint a n1

[T04GTR]

the top one is standard. bottom is n1.

[GTRsean]

????????????????????????????!

Great, now I don't know what pump it is...

I know the top on in my pic is definitely an R33GTR stock oil pump (it's out of my R33 engine).

What is the bottom one then.....I have another pic of it.

There are no nissan markings on the casting, the insie of pump has a smooth coating on it and oilways are cast for more flow compared to stock.

The gears are wider and larger in diameter than stock gears. 85mm diameter and 12mm thick.

Relief valve is different too. Also has roll pins x2 as locators?

Anyone?

Edited September 10, 2008 by GTRsean

[GTRNUR]

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3.2K for a pump! I thought that was a reason to not buy HKS! The 4 stage dry sump system on my vw race engine cost only about 1k more than that, and it could easily be adapted to a GTR engine.

I cant imagine why anyone would want bigger than a jun or trust pump and a nice 8lt upgraded baffle sump on 99% of nissan engines. Add some restrictors and isnt that the most proven reliable lubrication system out there?

[Duncan]

just a guess.....could it be rb30 or aftermarket rb30 alternative? surely if it was one of the jap brands they would put their name on it.

no-one likes to spend 4x what nissan charges and still miss out on the logo

[GTRsean]

Beats the hell outta me.

Only markings are: X-15 (stamped), and M2103 (engraved).

[T04GTR]

if it has an alloy plug for the relief valve, and a threaded block off on the side its probably a jun. but definatly aftermarket.

whats the back of the rear cover look like? did it have allen keys as aposed to screws holding it together?

could it be a rd30 diesel onE ???? who knows but its a go-er regardless.

duncan. the rb30 pump has a steel inner gear sleeve thingy. and is a spur gear type not a gearotor type. also smaller.

[den001]

if it has an alloy plug for the relief valve, and a threaded block off on the side its probably a jun. but definatly aftermarket.

whats the back of the rear cover look like? did it have allen keys as aposed to screws holding it together?

could it be a rd30 diesel onE ???? who knows but its a go-er regardless.

duncan. the rb30 pump has a steel inner gear sleeve thingy. and is a spur gear type not a gearotor type. also smaller.

definatly not a jun pump, jun pumps have a andoised red bolt for the spring and also the back casing will definatly say jun

[GTRsean]

It has no threaded block off.

Rear cover is flat and screws look the same as stock pump screws (countersunk philips), just one extra.

Couple of things, it was used on a narrow drive crank by the look of the inner gear

And the alloy pressure relief bolt had a valve shim to bump up the spring tension on the relief valve (you can see it in on of the pics in the plug lol).

[gun32gtr]

weird sean. hope all gos well whatever it is mate. where did you get it from