bone5.0

any info on what size line for the oil return and best way to run it. im using a 3/8 line braided hose -6 AN fittings. i started up my car today to make sure i had no problems and the turbo started blowing oil out the exhaust side and the compression side so im thinking turbo needs rebuild or its my oil return and how i have it ran.

justinm0424

Do you have an oil feed lin attached? Usually you can run the return into a drilled hole in the oil pan.

bone5.0

yes its a 3/8 linewith AN fitting 90 dergees. when i start the car it blows oil out both sides of the turbo so i think it is how i have the return going or the turbo.

justinm0424

sounds like your turbo needs rebuilt.

uedlose

do you have a restrictor on the feed side you don't need full oil press. to the turbo. I would also step up the return size to 8AN or better yet 10AN

bone5.0

what do you mean that the turbo doesnt need full oil press. how do you set that up. i have the line right off my oil sending unit.

uedlose

They make a restrictor that goes inside the line a lot of people use a .065 nitrous jet. they tap the inside of the an fitting and screw it in. Big H/V oil pumps and high oil press. can caues problems with turbo seals. you get the oil restrictors from most turbo suppliers.

bone5.0

thanks i'll look into that.

turbostang21

if you don't have a restrictor that's certainly your problem. you'll likely destroy a brand new turbo in seconds without one...ihave a jet tapped into my an fitting although i'm not sure on the size. the turbo just needs a steady supply of oil...even a bit too much pressure or more thannaturally drains will blow out the seals.i use -12 braided for my return...