Let's Reignite The Debate - Oil Pumps - N1, Tomei, Nitto

[Shoota_77]

Ok, as per my clutch post I think I've just killed my oil pump due to stupidity or possibly just a case of was always gunna happen just when.

Anyway, that got me thinking about what pump do I put in.

I've read all the posts about N1's self destructing and at this point i'm a victim of the N1 curse (mine is N1 but a few years old now).

I spoke to Chris at Racpace who did the tune on my car and he said they still predominantly fit N1's. They do a lot of track cars and some pretty high performance stuff at that. He said the only time he wouldn't fit an N1 would be to say a drift car that is bouncing off the limiter on a regular basis.

So I'm in two minds, spend say $450 and get an N1 or go nuts and spend $1400 on a Nitto or $1700 on a Tomei and hope to never have a problem again???

Decisions, decisions.

Your thoughts gentleman? And keep it clean, this topic seems to get people a little emotional......

[KiwiRS4T]

Let's not - its all been said before - just read what's already been written.

[Shoota_77]

Thanks for your help.......

[89CAL]

I just worked out what pump I was going to run... I dont need this now

But seriously, theres Plenty of info on these pumps already.

[kitto]

Nitto pump

Nitto crank collar

6 - 10 thou total clearance between collar and inner gear drive flat.

External oil pressure reg

ROSS/ATI/ New OEM harmonic balancer

Fully balanced rotating assembly

Avoid rev limiter

Failing that, external oil pump opens up a whole can of worms.

[jangles]

HKS

[Shoota_77]

My tuner was saying the R33 already has the longer crank collar and doesn''t need the sleeve, is that right??

[The Dan]

We've broken 2 x N1 oil pumps on cars that were doing engine run in. No limiter bashing.

Read the old threads. Stay away from N1 pumps

[Piggaz]

Just don't hit the limiter. Is it REALLY that hard?

Set the limter at 8500 RPM and shift at 8000 RPM and get your tuner to pull a shit load of timing out before the hard cut.

It seems that the older N1 pump's are more reliable than the new ones (Just like the above post has suggested)

Buy a Tomei, don't bash limiter. Issue solved.

[Shoota_77]

That's the bloody annoying thing. Hitting the limiter once like I did shouldn't have shat the thing. I guess it was just gunna happen, fortunately it happened while static. I''ve had the car for 6 months but only put a few thousand kms on it. I got it back from the tuners yesterday so a brief rush of blood to the nether regions and here we are.

Plus side? I used heaps less fuel on the back of the tilt tray than if I'd driven!!

I''m kinda pumped about pulling the engine out anyway. Heaps of other stuff I can do while it's out.

[zebra]

Smashing the Limiters is bad in any engine/pump combo

Shock loading anything drive/engine related is never good for it

Set rev limiter to what ever the bottom end or valve train is good for (which ever is the weaker link) and besides 99% of the time the power has fallen well over by then so there is no real point being up there

I can't comment on oil pumps because I've only ever used oem stuff, ironically never broke one though

[R31Nismoid]

For the record, i limited bashed a N1 all the time @ 8400rpm. No problems.

Anyway lets not reignite the debate - there has been more than enough information posted over the years for someone to make their own decision - and that's what needs to happen, you need to decide.

Thanks.