Well after almost a year I have something like an update...
I shipped the motor back to Mast Motorsports. They inspected it and said it still looked brand new inside and the only thing they didn't like was the oil pick up tube height from the pan. Mast said too tall at close to 1" and according to Champ should it should be about 3/8".
Despite the pick up tube height issue they ran it on their dyno under 70 load cycles for 1.5 hours with and without and oil cooler with both a mechanical and the ECU oil pressure sensor and pressure never dropped below 35 psi at idle and 60+ at 3.5k RPM. With oil cooler the oil temps were 170-180 and without oil cooler they used a temp gun showing 230* (dyno temp gauge uses the cooler)
So I'm totally lost. I also tried a mechanical gauge and verified the low oil pressure not to mention the same ECU they are using is what I used and it showed the low oil pressure too.
Mast is pretty convinced that the motor is fine but is open to any suggestion I have that they should of tried on the Dyno that they didn't but I can't think of anything. I also can't think of a plausible explanation for why they get good oil pressure and I didn't.
Anyone have any ideas?
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