boosted2.4

Ive got a new journal bearing 6765 with a -3an feed line. Once the car warms up I start getting oil smoke out my exhaust. My return is -10an with no 90's or kinks in it and its not lower than the oil level in the oil pan. I was wondering if it would be ok to add a .065 restrictor with an -3an feed.

TheShodan

iTrader: (14)

possible. Give it a try at this point. its not too small. Check that oil pressure, and make sure the cartridge isn't clocked more than 20 degrees from vertical, or tilted back more than 10 degrees.

boosted2.4

Thanks I will try it. I wasn't sure it I needed to run a -4an feed if I was going to run a .065 restrictor. The cartridge is straight it is tilted a little but not more than 10 degrees.

WhiteEJCoupe

how many damn Precision turbos do this? this is an ongoing problem with them, glad im not the only one. i guess they are notorious for this.

EsotericImage

iTrader: (8)

^^^

Seen a few threads pop up outta no where!

per4mance

iTrader: (1)

run a restrictor

twkdCD595

Its not just Precision.

High oil pressures of a healthy honda motor tend to require a restrictor on many turbos as they exceed the max oil pressure the turbo is designed and rated for.

Axix24

these threads are popping out of nowhere... Maybe bad assembly of the turbos on the production line... i would ship it back and get a new one.. A properly seal turbo shouldnt smoke regardless of an restrictor espec when brand new..

twkdCD595

I am not sure where you got your information but thats not correct.

All turbos have a design limit and rated max oil pressure. Its not a made up number, its there for a reason. You exceed it you risk pushing oil, even on a brand new turbo.

blackeg

you can run the -3 with restrictor, thats what i use on my journal bearing turbo. also as the shodan said, check the clocking of the turbo, you want the feed and return as close to vertical as possible

SpoolnG2

Ive got a brand new bullseye S362 and its pushing oil passed the seals and into my intercooler. I have a -4 with no restrictor right now. What I will be changing to is a -4an with a .065 restrictor. It says on the ATPturbo website that a .065 restrictor is what should be used for Journal bearing turbos and larger ball bearing turbos.

ken00si

Had the same problem with my SC61 and had to switch from a -4an feed line to a -3an feed line with restrictor.

By the way, this is on a fresh motor rebuild. The car ran fine for 2 years and 1000 miles with the -4an feed line...go figure???