Thread: Journal bearing turbo needs a oil restrictor?

Hi guys!

This is the thread of never end... I'm interested in your experiences with journal bearing turbos. A local customer come to me with a smoke problem, i check the turbo and the engine and everything is ok. I installed a -4 oil restrictor with a excellent results, no smoke . My question is why in 2 years of abuse this turbo run excellent and now needs a restrictor.... ummm i think the life of this turbo is ended??? So, now he want a new journal bearing turbo, more bigger What is the best option, restrictor or not? I used a drilled restrictors with very good results in the past...

Thanks!

http://www.sr20-forum.com/turbo/12609-turbo-oil-feed-drain-tech-do-i-need-restrictor-not.html

Its best to just contact the manufacturer of the turbo

It also depends on the size of the oil feed line being used. A large line may need a restrictor whereas a smaller line may not. also check to see that the drain line isnt obstructed as this can cause smoking as well.

Yep. A larger line can flow enough to overwhelm the oil drain (requiring a restrictor) where a smaller line might not.

update:

I drilled the restrictor with a 7/64", works excellents, no smoke and good lubrication.