Which oil drain port to use?

[Girraf]

RV-7 with IO-360-M1B. Engine has two locations (left or right when looking forward) to drain the oil. I'm putting in a quick drain adapter and want to know if there is a preferred side and if so, why. The firewall forward installation will be mainly to the plans except for a vetterman 4 pipe exhaust.

 

[WardC1020]

Oil Drain

I think one of them has the oil screen. Not sure you can move this around.

 

[Taltruda]

I think one of them has the oil screen. Not sure you can move this around.

No, the oil screen is under the one with the 5/8 hex head and safety wire and goes in Horizontal.. the oil drain port is vertical, 1/2 inch NPT, and either would work.

 

[AN23]

If you're going to use an Anti-Splat heater, use the right side (looking from the pilots seat).It will allow you to route the power cable to the oil door. Not enough cable from the other side.

 

[PhatRV]

I didn’t know so I put the drain valves in both

 

[JonJay]

Get all your FWF stuff done and use the one that has the best access or path for the hose you will use for the quick drain.

 

[Desert Rat]

Get all your FWF stuff done and use the one that has the best access or path for the hose you will use for the quick drain.

^^^^
This. Wait until you get everything else done.