oil line restrictor

[1995240sxSE]

I have read thru the archived poll on oil line restrictor and was seeing the talk that a restrictor is a crutch. I have the jgs oil kit and no restrictor on there. My exhaust smokes A good ammount! I was thinking I just needed to put the restrictor on. I was wondering what oil psi y'all run into the turbo? I wanna make sure I dont lock up my turbo! My return line is not kniked and is a sweeping 90* angle into the top of oil pan right behind the a/c compressor.

The only times my motor smokes is after I hit some boost and the come to a stop. It is getting kinda annoying/embarassing driving onto base and having the mp's make little snickering remarks about my car. Asking me if it is gonna make it!

[S13FX]

I think the restrictors are mostly used on ball bearing turbos, but I could be completely wrong, or it could be the other way around.

Also if you have smoke coming out after getting on it hard, It could be your turbo seals, or some excessive blow by somewhere.

[spooled240]

Everything is stock on my car, including the oil pressure. I have a oil line restrictor from ATP (.060 hole) for $14 and my car doesn't smoke much at all. It puffs a little bit of black smoke after I let off the gas free revving, but that's just fuel.

[480sx]

Its my understanding that all turbo feed lines need a restrictor. Iv heard that you can get away sometimes without using one, but generally your turbo's seals fail because of excessive oil pressure. .60 for non ball bearing, and .33 for BB turbos from what i recall...

[1995240sxSE]

from what I was reading the seals dont FAIL but just dont operate properly with too much oil. Where did you pick up your oil restrictor?

[kas14slider]

from what I was reading the seals dont FAIL but just dont operate properly with too much oil. Where did you pick up your oil restrictor?

Dude, I am in the same boat as you right now. I turbo'ed my car and I had a jgs oil line kit and now I am kicking myself for not getting the restrictor. I just ordered the restrictor from jgs because it's like $20 shipped and it comes with three jets to flow "0.050 , 0.042" and 0.035" But yeah, my car would smoke a lot when I was in spool and driving around was really embarassing, not to mention you could probably get pulled over for that.

[480sx]

http://www.mcmaster.com/2712T488 Brass Flow-Control Orifice With Pipe Thread 1/8" Male X Female, 0.063" Orifice Diameter (make sure to get the .063 orfice)

[1995240sxSE]

thanks 480sx good price on that one. You get brass or stainless? I am gonna order the stainless unless there is a good reason not to.

[Carl H]

-4 line will require a .064 restrictor, can be easily made for 2$ if you have access to a tap and die set, dremmel tool, 1/16th" drill bit and a setscrew.

[480sx]

I think i got the stainless, though i doubt it maters much. Yea it sure beats paying 20 dollars for a simple piece like that.

[Edub1]

I used the JGS restrictor with my 1st turbo and my bearings went quick although I think it was poor balancing. 2nd turbo with no restrictor is doing fine.

Garrett says that a restrictor is needed with a BB turbo but not the other. It is easy to google. I'm going to put my restrictor back in on account of my pressure dipping too low but I'll also drill it out a bit.

Smoke is probably a sign of bad seals or something else. In order to create pressure you need some type of resisting force. If you have a proper drain line, where is the resisting force coming from?

[1995240sxSE]

I have no resistance. I believe that there is just too much oil coming in. The turbo has always smoked sicne I bought it new! I just built this engine Compression is good. Lost of power just a smokey bit c h. I am gonna try the oil restrictor If it still smokes I will take it off!

[lsxavier]

I have the same problem.I only put 600 miles on the car and the car started smoking.I have the turbonetics kit with ball bearing turbo.I thought it was my return line but it's good ( i put a clear hose)Where do you install the oil line resistor?

[480sx]

Im not sure it maters where you install it, just somewhere on your feed line. If i had to venture a guess, the closer to the turbo the better.I have a DIY oil line setup, and i installed my restrictor into the 90 degree fitting that goes directly into the top of the turbo. So basically its right next to the turbo.

Damn, you got a BB turbo kit and it didnt come with a restrictor? Thats amazing, coming from turbonetics, they are a huge and reputable company. You might want to shoot them an email about that, for how much your probably paid they should at least tell you you need one....

[kas14slider]

Yeah, so just got my JGS restrictor today and put it in and it instantly solved my smoking problem. No more white oil smoke, just the black smoke from running on the rich side. I used the 0.050" jet.

[1995240sxSE]

cool I am glad it worked for ya. My cheap A$$ hasnt ordered anything yet. I am going on vacation in a few days and am not even driving till I get home So I will order one later! I hope it will work for me!

[SeanC]

i am using the jgs oil kit with my ams gt32 i am not using a restrictor and i have no oil smoke.

[turbo2nr]

i also smoke oil on decel after boost and i have a ristrictor. and its gotton worse that when im at a light the car will let out a puff of smoke... well i came to find out my turbo has developed shaft play and my comp. blade is hitting the housing.. im starting to wonder if this was b/c of hte restricton not supplying enough oil to my turbo....

[1995240sxSE]

that sucks! I hate it when a turbo goes bad. I am hoping this is not my issue, I am pretty sure it aint cause I have no shaft play. I always think back to the 1st kadet ride when I hit alot of boost and blew my motor. I dont have 360 degree thrust bearings and I always think back to running 29 psi on this turbo maybe messing somthing up! I am thining if I keep this car I am gonna ship turbo off to be rebuilt with 360 degree bearings!

[1995240sxSE]

COOL I am back from virginia and put the oil line restrictor with .0963 oriface and it works like a champ. No smoking! Thanks 480sx

[480sx]

Glad i could help yah, it seems like some turbos do fine without restrictors and some need them. Im going to try mine without a restrictor first, if it smokes ill add it. The threads about roaching a turbo scare me...

[turbo2nr]

yea i pulled my journal bearings , turbo failuer due to poor oil lubrication.. no oil restrictor anymore i rather deal with some smoke then buying a new turbo.. ill post pics on monday of the bad journal bearings...

[1995240sxSE]

well the smoke was never gone, aparently I hadnt gotten her into boost enough, well its back, just as bad. I am taking the restrictor out just so I can use this turbo until I get a new one instead of Having to buy a new one soon. Farkin blaastperformance I guess their turbos are no good after all.