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N1 Oil Pump & N1 Water Pump

sunnycoast

By sunnycoast,
in General Maintenance

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sunnycoast Experienced

sunnycoast

Posted
Posted

Good morning :thumbsup:

I am looking to do a major service on my car, as i will turning my daily into a track/street car.

I know what parts i will be putting into the car to help with the longevity of the engine, however, i need some advice on the following:

N1 Oil Pump - Can this be done easily while my mechanic does my timing belt and water pump? Also, what are the benefits of the N1 Oil pump over standard, and will the N1 fit my Rb25det Neo 6 ER34 motor?

N1 Water Pump - What is the benefit over a standard water pump, and will it be useful during street driving? I have heard it doesnt spin easy at low rpm and will cause overheating issues.

Any advice would be a big help for me.

Thank you kindly.

Chris

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Yawn Mentor

Yawn

Posted
Posted

I think you can still do your oil pump with engine in but most people do it while the engine is out. If im not mistaken the N1 oil pump flows the same capacity but offers higher pressure over the stock pump.

And no the N1 water pump will not be 'useful' during street driving. There is nothing wrong with the standard water pump and an n1 unit does not offer any noticeable advantages on the street.

br3ndan Mentor

br3ndan

Posted
Posted

Not sure about the whole not spinning at low rpm... somehow i find that highly doubtful.

N1 water pump goes 2 more fins for nine in total, where as the normal one has has 7. The n1 water pump i dont think it is that much more then the normal one... maybe 50 or 70 bucks only.

So, if i was you, i would just get the N1 pump as its only extra ~ 70 bucks. However saying that,,, the normal water pump well work perfectly fine for street.. and if want to keep that 70 bucks for a tank of fuel instead! Then theres is no problem in that either~!

bubba Grand Master

bubba

Posted
Posted

I'm running an N1 oil pump (got it from Sliding Performance) and a standard RB20 water pump.

From what I read, the N1 water pump is useless for street driving and was designed for sustained high revs (constantly 7000rpm+, i.e. around a racetrack) but it pretty shocking for low rpm street driving.

Godzilla32 Veteran

Godzilla32

Posted
Posted (edited)

The N1 water pump causes cavitation during low RPM use, so is not a good thing for street driving. The N1 oil pump has a layered gearset which is prone to cracking on rev limit (cracked gearset means no oil flow). It also has increased flow/pressure which is a bad thing for RB engines due to their over supply of oil to the head. As for fitting, you wont be able to remove the oil pump without dropping the sump and to drop the sump its pretty much an engine out of car job. If i were you id leave both pumps stock (replace the w/pump with a stock item) and focus more on oil control mods. Theres not a great deal you can do with the engine in the car though. Id spend my money on a oil cooler if you dont already have one. Its a must for track work and will increase your oil capacity.

Deren

Edited by Godzilla32
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sunnycoast Experienced

sunnycoast

Posted
  • Author
Posted
The N1 water pump causes cavitation during low RPM use, so is not a good thing for street driving. The N1 oil pump has a layered gearset which is prone to cracking on rev limit (cracked gearset means no oil flow). It also has increased flow/pressure which is a bad thing for RB engines due to their over supply of oil to the head. As for fitting, you wont be able to remove the oil pump without dropping the sump and to drop the sump its pretty much an engine out of car job. If i were you id leave both pumps stock (replace the w/pump with a stock item) and focus more on oil control mods. Theres not a great deal you can do with the engine in the car though. Id spend my money on a oil cooler if you dont already have one. Its a must for track work and will increase your oil capacity.

Deren

Deren,

Spoke to a mechanic today and he said exactly what you have. Thank you for the long write up and the advice.

You have all been great.

No more needed.

Thanks

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