I see a lot of people are using nitrous jets as oil restrictors for their turbos. Can someone explain to me how and where these jets are installed? How do they fit into the feed line? What specific fittings do I need to get in order to utilize nitrous jets.

Thanks!

 

I have a npt to -4 an fitting on my turbo that my feed line hooks to. All I had to do is take that fitting and cut off the AN part and file it flat and smooth and then just insert the jet there. The jet takes the place of the AN part of the fitting and seals just fine.

 

Does anyone make a male NPT to male AN fitting without the flare on the AN side, just the threads? Or is it a custom dealio like what you did?

Are nitrous jets only for -4AN?

 

Why do you think you need a restrictor? I would suggest trying to fix the issue instead of band-aiding it with a restrictor. The last thing you want is less oil going to your turbo. You probably have a drain line issue...either too small or too tight turns. The only time you should need a restrictor is if you have very high oil pressure and a ball bearing turbo.

 

The kit isn't installed yet, just ordering up parts that I will/might need. I don't want the truck to be immobile just because I'm pushing oil through the seals. I'll try without the restrictor first. If I don't need one, great. If I do then I have the parts ready to go. Research on LS1tech showed that most people run restrictors. My oil pressure is 45-50 psi at hot idle and 80 psi at redline

 

I took the straight NPT to -4 a/n fitting and tapped the NPT end to accept holley carb jets. Just another option, nitrous jets might be easier for you tho. Where are you going to run your drain?

 

-10AN into the front timing cover as low as possible is the plan. I'm doing a cam swap soon and it will be easy to install the drain fitting in the cover while I'm at it.

 

Depends on the size of the feed line.
Our kits use a -3 feed line, so you need a 1/8npt x 3. file the flare drill out to the proper size insert jet. the jet replaces the flared end of the fitting.
Or
go buy a 1/8npt x 3/16 compression. throw compression nut and sleeve in the draw. the compression end works great with large barrel jets like we use.

 

Thanks for the info. I am planning on using a -3AN feed line, that's what Magnum said to use.

You said to use a -3AN with the nitrous jet but lglowe said to use a -4AN. I can get a 1/8npt male to -3 or -4 male. But is the flare on the nitrous jet -3 or -4? I'm planning on hooking the feed fitting + nitrous jet to the female hose end on the -3 feed hose.

 

I'm just running straight -3 feed and -10 return with no restricter and no problem