Parisi613

I am almost ready to put my engine together and will be installing the oil return to be ready for when I install everything over winter.
Thaaat being said, the oil pan is off and I am welding in the AN10 fitting. I will not have PS or AC.

Question: Should I use the standard location that everyone seems to use (near the front of the pan), or should I use a farther back location I have seen some suggest bc the pan is loose and easy to drill?

Ted75zcar

iTrader: (2)

You end up with a better drain if you move it back, but positioning really requires the front subframe to get right. Also be aware that an AN10 is probably smaller (ID) than the manufacturer's recommended drain diameter.

https://www.miataturbo.net/build-thr...5/#post1477316

sixshooter

iTrader: (12)

Be aware of motor mount and subframe conflicts as well as oil pickup tube conflicts prior to drilling. We've had to do it twice on one of the installs locally.

And dont just think about the fitting but the hose routing on the outside as well.

The fittings don't usually remain flush on the inside of the pan and can interfere with the oil pickup tube directly. Even if it doesn't contact, the pickup tube may significantly block the drain in some cases. Seen it.