Freshly built d16z6.

Autometer oil pressure gauge w/ nylon tubing fed from oil sandwhich plate
gt3582 fed from -4an coming off sandwhich plate

Cold idle 85-90psi
Warm idle 18-20psi

I haven't drove the car yet but are these numbers good for oil pressure at idle? 800-1000rpm

 

What oil weight and what bearing clearances?

 

Running 5w30 non synthetic right now for break in and honestly I can't remember my clearances but it's stock z6 crank and std size ACL race bearings

 

so clearances should be between .0015 and .0018
Also.. where is your pressure while driving?

 

Yes if I remember correctly I was getting 0.0016-0.0017 across for clearances and I haven't drove the car yet. I'm in Canada so waiting for all the salt/snow to clear lol

 

Ok, now we're getting some data! The pressure cold is a bit on the high side but I can imagine Canadian wintertime can leave oil like molasses. Lol! Warm idle looks good, and should see around 75 or so at 3k rpm, usually around 90ish at WOT.

 

Looks pretty normal to me , if it gets much lower I would use a thicker oil. I suggest 10w-30 usually on a factory clearance motor unless your in a very hot environment

 

My cold idle is similar to yours (also turbo D16Z6). My fully warmed idle is around 15 psi in the cooler months. Last summer was hot (southern US) and my fully warmed idle would be down as low as 8 psi sometimes. I am currently running 10W-30 full synthetic and my bearing clearances are around 0.0016". I may try some 20W-50 in the heat of the summer to see if it improves my warm idle oil pressure.

 

yeah it's still below 0 here and also I did shim the pump slightly but not sure if that effects cold or warm idle.

 

It affects all operating pressure. It puts additional "preload" pressure on the pressure relief valve spring, causing it to open up later.

 

so I guess that may be my reason for higher pressure on cold idle. Thanks for all the help, just wanted to make sure my pressure was good!