Odd Oil Pressure Symptom

Rojoryu · 05-23-2022, 03:18 PM

Quote:

Originally Posted by THE BULL

Well gallery gaskets should not need ANY RTV. I did coat my OEM new gaskets in really light RTV at the same time.

Your best bet is to install a manual gauge or wire up the glowshift manually so it can give you as quick of a reading as possible.
Depending on your findings I would change the oil and filter and inspect the filter as previously stated.

Continue to monitor this.

Thanks for the response. I should clarify. I didn't put any rtv on the gallery gaskets themselves but I did use a lot reinstalling the timing cover and oil pan. It’s plausible that some excess detached and could have lodged itself somewhere. I’ve changed the oil this point, inspected the old oil and filter. I even ran a magnet and a light through the old oil and didn't pick up anything. I used a Harbor Freight external gauge in addition to the one thats already installed and they are both reading normal pressure. I have no idea what was causing it but I will definitely continue to monitor it.

THE BULL · 05-26-2022, 07:41 AM

With the analog gauge what is the minimum pressure you see at cold start and for how long until you have to blip the throttle?

Rojoryu · 05-26-2022, 06:40 PM

Quote:

Originally Posted by THE BULL

With the analog gauge what is the minimum pressure you see at cold start and for how long until you have to blip the throttle?

Cold start I’m at mid 90’s PSI. I haven't been able to replicate the problem since the track event. I’m just going to keep running it as is. If something fails I’m OK putting a new engine in it.

Spooler · 05-27-2022, 08:17 AM

Quote:

Originally Posted by Rojoryu

Cold start I’m at mid 90’s PSI. I haven't been able to replicate the problem since the track event. I’m just going to keep running it as is. If something fails I’m OK putting a new engine in it.

That's low, it should be in the 100's. I beat you have an issue with the boundary gears. It has happened before on a new engine build. I suggest you go back to a new Nissan pump or get the Nismo pump. You could also be seeing
bearing related issues. Either way, you have an issue going on.

Rojoryu · 05-27-2022, 02:04 PM

Quote:

Originally Posted by Spooler

That's low, it should be in the 100's. I beat you have an issue with the boundary gears. It has happened before on a new engine build. I suggest you go back to a new Nissan pump or get the Nismo pump. You could also be seeing
bearing related issues. Either way, you have an issue going on.

For what it's worth, the only time I have ever broken over 100 PSI on this particular car is a cold start in the Winter.

Rojoryu · 05-28-2022, 08:12 AM

I called Boundary yesterday and they do recommend shimming +2 for the VQ platform. If I would have been more patient and done more research I would have figured that out before buttoning the engine up last year. Lessons learned. I purchased a low mileage replacement engine yesterday as well as the full pump assembly from Boundary. This will give me a fresh(er) motor to track with and I’ll keep the current engine on a stand to tinker on.

THE BULL · 06-09-2022, 08:10 AM

I keep reading that these pumps should be shimmed.

The extra pressure will do numbers on that relief.

Luckily for you, you can access the relief just by taking off the oil pan, may want to try this before just in case.

05-26-2022, 07:41 AM	#2 (permalink)
THE BULL Base Member Join Date: Apr 2021 Location: Florida Posts: 216 Drives: G37S Rep Power: 26850	With the analog gauge what is the minimum pressure you see at cold start and for how long until you have to blip the throttle? Rojoryu likes this.

05-28-2022, 08:12 AM	#6 (permalink)
Rojoryu Base Member Join Date: Sep 2021 Location: Charlotte Posts: 48 Drives: 2011 370z Base/Sport Rep Power: 17	I called Boundary yesterday and they do recommend shimming +2 for the VQ platform. If I would have been more patient and done more research I would have figured that out before buttoning the engine up last year. Lessons learned. I purchased a low mileage replacement engine yesterday as well as the full pump assembly from Boundary. This will give me a fresh(er) motor to track with and I’ll keep the current engine on a stand to tinker on. JARblue and THE BULL like this.

06-09-2022, 08:10 AM	#7 (permalink)
THE BULL Base Member Join Date: Apr 2021 Location: Florida Posts: 216 Drives: G37S Rep Power: 26850	I keep reading that these pumps should be shimmed. The extra pressure will do numbers on that relief. Luckily for you, you can access the relief just by taking off the oil pan, may want to try this before just in case. SwedeZ and Rojoryu like this.

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