Remote Oil filter and Cooler Line size?

I'd absolutely use 8 AN (1/2") and change the adapters on the oil pump housing. Any reduction in size is a restriction.

Anyone using an10 for less restriction?

@Stan Galat posted:

I'd absolutely use 8 AN (1/2") and change the adapters on the oil pump housing. Any reduction in size is a restriction.

Can i just get a -6 to a -8 adapter for the oil pump housing or would I have to change the housing?

@bkelly posted:

Can i just get a -6 to a -8 adapter for the oil pump housing or would I have to change the housing?

I would assume the AN 6 adapters thread into the oil pump cover. I'd remove them and get bigger fittings.

@bkelly posted:

Can i just get a -6 to a -8 adapter for the oil pump housing or would I have to change the housing?

Someone with a greater grasp of fluid dynamics can explain this far better than I, but -6 to -8 adapter is basically a -6 line in every way except volume.

And I’d advise XRP fittings, vs the standard fare from most distributors.

There’s a wealth of information your be interested in on XRP’s tech pages.

AN6 is a good size for EFI fuel lines, not oil.

AN8 is 1/2" diameter inside(8/16"). As Stan and Al said, adaptors are not going to cut it.

Additionally, if you have a "full flow" pump, get rid of it. They are full of restrictions. They do filter all of your oil, but are not doing you any favors with regards to flow. If you really want to full-flow an engine, the main oil gallery must be drilled and tapped.

If your cooler is in the back, AN8 is a good size.

If you pipe the cooler to the front of the car and back, use AN10(10/16", or 5/8" I.D.).