N1 Gtr-32 Oil Pumps

[Sydneykid]

Tricky one…………..

I haven’t seen any mention of oil flow problems elsewhere in the engine.

1. How much oil is there in the cam covers, say at idle?

2. Say, when you hold it at 2,000 rpm for 10 seconds?

3. Does the oil filter get hot as the oil heats up?

4. Do you have an oil temp gauge?

5. What temps does it say?

6. Is there oil flow at the turbo oil feed?

7. Does it blow oil out of the cam cover breathers?

8. Any bearing noises from the engine?

The confusing issue here is the 92 psi at idle. The reality is an N1 oil pump doesn’t pump enough oil to make 92 psi at 750 rpm. They have sufficient flow to make around 35 psi at idle when the oil is warm. That’s it, there simply isn’t enough flow to make more pressure.

cheers

Edited May 17, 2006 by Sydneykid

[[200]]

Answers to previous questions:

Yes,3 different oil pressure guages, the standard nissan sender unit, autometer pro comp(brand new) and ABW oil pressure sensor, all read 92 psi as already putlined.

Yes the oil filter has been checked and changed and appears not to be causing a change in oil pressure, 2 different brands have been tried with no change.

Engine oil temperature is as per factory specifications, running motul

8100.

No there is not an excessive amount of oil in the breather system or rocker covers, the engine is fitted with both a tomei head restrictor and 1.2 mm restrictors for the turbo chargers, these are both normal upgrades which i have done on many other rb engines and no problems arissing from them.

Yes turbo charger oil supply is fine.

Still at a loss but head is being re serviced at the moment as valve guides and valves need re doing so still awaiting its return before i can really look any further into the problem.

[Nickandm]

what did this problem end up being? I have very similar issues with my N1 pump and would love to know how this issue was resolved as I'm still wondering what to try next.

If anyone knows how this motor ended up I would be very interested.