Oil Lines.., What Sizes do I have? Options

[DougC]

Can someone say for sure what size oil lines I have here? I need to buy a couple of AN straight end connectors (if anyone has some for sale) and don't want to guess. The larger one on the left will be going to the engine mounted oil cooler from the tank and the other is the scavenging side to the tank (sorry, this is for a six if it's not obvious). Could the large one be AN-16 which is optimum, right?

Doug C

[ArtechnikA]

QUOTE (DougC @ Jun 7 2005, 02:29 PM)

... what is the -16 recommended for again, was it external cooler back to tank?

there are plausible arguments for why each of the lines should be -16...

i have allowed myself to be convinced that if you're only doing one, it should be the inlet line from the tank to the pressure pump - with an internal anti-collapse support. that's the shortest one too - the line from the tank to the external connection on the bottom of the oil cooler. oil starvation to the pressure pump is very bad.

another reasonable compromise might be to run AN-16 to (and from) the thermostat, on the theory that if oil is being bypassed at the thermostat it's cold and thick and pressure restrictions should be minimised. that'd leave you with possibility of running AN-12 lines to and from the front cooler, and any oil getting past the thermostat should be hot and thin.

since it's also your longest run, restrictions are bad, but since it's your longest run, it's also your most expensive.

partly it comes down to what ports you have at the cooler. probably no point running -16 lines to a cooler with -12 ports...