Unknown oil fitting? Options

[lmcchesney]

I put the engine back in and cranked it over following the rebuild. I found significant oil leaking/draining from behind the impeller housing. I ended up pulling the enginen out and looked at the source, thinking I did not get the oil in and out barbed fittings tight. To my suprise, I found a fitting hole which I cannot remember what its purpose is. I believe this to be the source of oil loss.
This is a modified 2.0L. We run an external oil cooler in series with our stock oil cooler. Denny removed the stock oil filter mount and capped it off with a plate. He plumbed the case for _8 fittings for oil in and out to the external oil cooler and remote mounted oil filter.

[machina]

Watch those long extensions on your oil ports. All those connectors and adapters in series are like a long lever that will tear your motor up with extreme motor vibration. Since I couldnt fit any AN fittings past the pump plate, I had the local hydraulic shop make these short hoses that go directly to the case port return and the pump plate outlet.

I will attach the AN lines to the ends of the short hoses, makes it easier to reach once the motor is in the car too.

The return port was tapped into the case and the outlet is part of the billet pump plate on the front of the motor.

dr