hello precision turbo owners! what size restrictor did you guys use for your precision turbo? thanks!

 

Some use the restrictor that the turbo comes with and a .032 on top of that.

 

ball bearing or journal?

 

This is the most important part, then of course what motor (assuming f20c/f22c).

Details are your friend, help us help you.

 

Need more info!

This is like asking:

What size tires do I get for my Honda?


Uh... we talking a Fit or Ridgeline?

 

its a journal bearing precision 5857s .63 ar

 

The Precision -4 restrictor fitting that comes on the ball bearing turbos is a .038

Depending on the car, you might need a .032


That fixed my smoking problem.


Hope this could help!

Fernand

 

"That fixed my smoking problem."

....and sometimes starving the turbo too.

 

I have the same turbo, I just run a -4an feed line & the -4an fitting. Feed comes off the block from stock oil pressure sensor location.

All the problems I had with smoking stopped when I tapped the oil return to the girdle, I would recommend the same.

 

You dont need a restrictor with the JB Precision turbo's, just make sure youre using a -3 feed line and at least a -8 return line going to the girdle. Also, it may be best to take the oil feed from the filter relocation block on the engine block, but if youre not using a filter relocation block, you can go from the factory pressure sensor area.