I am curious how many people are running a -3 Oil Supply Line on the Journal Bearing Precision Turbo? SC61s etc...

How many miles?
How much psi?

 

i have a -3 on my sc34.

 

x2
Car runs at about 25psi at idle @ 850-1k rpm
Running 10w30 Castrol Syn oil and it goes as high as 80psi at high RPM

At this moment I have roughly about 20-25k miles on the motor and turbo. Mostly road trips from ATL to MIA non stop at 3500rpm that was on the LS trans but now it's 4000rpm on GSR trans all the way.

What is the question that is in your head may I ask??

 

Precision seems to have had alot of troubbles with the sc61 series turbos.. Mine broke the exhaust wheel off.. I got great help from precision but when it broke again I got a garret and have no problems..

 

Just seeing how many people are running a -3 line on Precision Journal Bearing turbos

They recommend -4. I used a -3 on old turbo. Just was seeing if people are doing okay with -3 line. Don't want to waste money on -4 if it's not a must.

 

I used to run a -3 on my old SC34. Thats what they recommended back then. No issues after 3 years.

 

-3 on my sc34
Also called precision a few weeks ago to ask about running a restrictor on this turbo. Told them I had a -3 feed line and the rep never said anything to me about using anything different.

 

The fellas at precision deal with a TON of applications outside of honda, and its not a set-in-stone size restriction. Its based upon the oil pressure of the engine At the line itself. This is why they recommend -4AN on some applications and -3AN on others. DSMs run -4an on the same turbocharger that Hondas run a -3AN on because of idle and WOT oil pressure differences.

 

heres your answer

i just researched this same thing recently and this is exactly the answer i came up with

 

i ran a -3 on my sc61 and dd it for about 4yrs w/o any issues..