Thanks. I am trying to figure out if something is wrong before I bring it to the track this weekend. Hopefully it will be fine but with this cold weather it's hard to get the car up to temp in the street

 

That sort of harps back to the issue of why e never had a good baffled oil pan until the Canton one. Although many guys have lost engines, hardly anybody logs oil temps, and virtually nobody logs oil pressures.

So, nobody ever really said "Hey, maybe I spun a bearing and lost my engine due to oil starvation.

 

My car has a Derale 19 row stacked oil cooler with -10 AN lines running to the Mocal 200f sandwich plate. The factory exchanger is still in place. I measure oil pressure at the factory location above the oil filter, and temps at the drain plug, both with Defi tuner gauges. I use 5W-30 Motul 300V.
This last weekend was my first with the cooler and gauges.
On the street I didn't notice temps over 140f, and at those temps my pressure over 3500 rpm is 90-95, until vtec, then it drops to 85 or so. On track the temps rise quickly, so that by the third lap I'm at around 220f. For some reason I see a pressure drop to 65psi in vtec, which if I'm doing it right is all the time. Only when I'm down shifting or have fallen out of vtec do I see oil pressure rise. I wonder if the pressures have anything to do with the thermostat opening in the Mocal sandwich plate as the oil comes up to temp, or it's simply the oil changing viscosity due to heat. I've been told that removing the factory heat exchanger may bump up my pressure a bit. I was also told not to worry about the numbers I'm seeing.
I wish I had some experience of temps and pressures sans cooler.
Curious to see how long my motor lasts.

 

I think the pressure changes with the temp. At the higher temp I think the oil does flow easier or becomes thinner which lowers pressure

I haven't been on track and will know this Saturday. I also usually have a 10 psi drop in pressure at vtec

Prior track temps were 170 or so and rarely above 200. The pressure below vtec was about 80-90 and drops to 65 at vtec then rises quickly

 

Old topic i know but the reason you experienced these pressure drops when warm is because prior to that most of the oil had been bypassing the cooler and its pressure losses. Once the mocal thermostat closes all the way all the oil is going through your cooler and hpses and you will experience a pressure drop. I had this same issue with my oil cooler set up before. Great pressure before thermostat temperature and then huge pressure drops once it had closed up. 8an fittings and hose didnt help the situation and going up to 10AN hoses pushed pressures up during Vtec.

 

Where are you guys mounting an oil pressure gauge? Same for oil temperature.

-- Chuck

 

Believe it or not, Autometer makes a pillar mount.

 

Turns out for me it was the oil pressure sender. I recently switch and no more issues. But I am getting around 70 psi at 8k which is a bit scary

Science of speed makes one as well