I get a D16z6 engine... When i start the car, and the engine is cold there is 2,5 - 3 Bar oil pressure...

When the oil warms up, the pressure decreasing.. So I have to rev the engine up to 3000RPM to get 0,5 Bar oil pressure.. Over 3000 RPM the oil pressure is riseing up to max 2 bar. I have a K03s turbo on the car, but i used the same setup on a D14 engine, the turbo, and the oil pressure gauge is OK, when i swap this D16z6 engine the problem occurs..

What can be the problem?

- The oil pump is good, I get it from another engine, that works well, and i measured the gaps, so the pump is OK.
- The oil pumps pressure spring is OK.
- I replaced the oil (15w-40), and the oil filter too..
- New crankshaft bearings
- New Cylinder head gasket

The crankshaft and the connection rods has 0,50 oversized bearings.

Where can the oil leaks inside the block ? or in the cylinder head ?


THX !

 

15w-40? no.. u should be using 5-30.

 

5w-30***

 

This oil is for the test time.
I want to use some 0W-60 or something oil, that can handle the lots of heat...

 

that oil is way too heavy for winter weather...
Have you inspected your pickup tube and gasket?

 

I run Moble1 syn 10w30 works great in my race car. Did yoy check your main bearings?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 8urv8 &raquo;</TD></TR><TR><TD CLASS="quote">I run Moble1 syn 10w30 works great in my race car.</TD></TR></TABLE>

Quoted for truth.

Also, Royal Purple (obviously) 10 or 5w30. 5w30 for colder regions.

also, CHANGE YOUR USER NAME!!!!! lol

 

i think not the oil is the problem...
There are NO oil pressure at 3000RPM... The oil lines, gaskets are okay...
Everithing is okay... This is a hard problem... The bearings are new...

 

Like said did you check the pick up? Also what type of oil pan are you using and is there enough oil in there?

 

I got oil pressure!

The gauge was the bad! I bought a new one, and it shows the correct value..
Idle - cold engine - 5 Bar
idle -warm engine 1,2 Bar

On 3000RPm - 4,3 Bar

 

why use a used oil pump on a rebuilt bottom end.

though you said you checked the internals, it might be going bad.

check your pickup tube and stuff. blow it out with shop air or w/e. If you have to rev it to build oil pressure, something is about to give.

 

reused oil pump on a built motor... i see the outcome of this already.

I did this once, tried to save some money and stuck a used oil pump in... I landed up replacing bearings along with the oil pump shortly afterwards