S362ett Restrictor Help
 

Hey guys, I have a Bullseye S362ett turbo. I just got a new one this summer. So its only been ran about 15 runs. I have a little bit of oil in my intercooler and know my drain is good. Ive seen the discussion of adding a oil restrictor and not having one with bullseye turbos. I believe bullseye says to not run one but Ive read threads on people saying you should use one bc of the same problem i'm having. I currently do not have one, but am pretty sure that the turbo is just being over oiled. What size restrictor should I use? Anyone else with this turbo using a restrictor? I believe I'm using a -4an feed line.

TIA

Re: S362ett Restrictor Help
 

I would go with a -3 feed line and no restrictor and see if that fixes the excess oiling.

Re: S362ett Restrictor Help
 

Two things...

1. How do I check to see if its -3 or -4

2. Wouldnt it be cheaper to get a restrictor? Bc if i get a -3 fitting, then I also have to buy a new line as well.

Re: S362ett Restrictor Help
 

Josh.....Good to see you again, Get that clutch fixed!!!!, Why don't you PM "Shodan" on this site. Thats who I bought our turbo from,and we are not using a restrictor on it.I had to pull the pipes on our car and did not have that problem.... And we lost to Prescott 10.87 on a 10.85 dial in to his 11.06 and 11.05 dial in.He had a 2 bye runs to get to us and that was a bunch of crap not to be a bad sport but I was pissed,,,,I will talk about this later....Old Man Bob

Re: S362ett Restrictor Help
 

Josh... a restrictor would be cheaper then a stainless line, if you need a new line let me know I think I have one from the old setup its yours for free.What size line are you using for drain and how is it setup that might be the problem?? Are you on a sandwhich off the filter?

Re: S362ett Restrictor Help
 

The restrictor would be the cheaper solution of the 2.

We generally use a -3 w/ no restrictor and a -10AN drain line. This setup seems to do best. What does your oil pressure get up to?

Re: S362ett Restrictor Help
 

How do I figure out if its -3 or -4? I just cant remember since I put it on so long ago. I'm using a very short -10 for the drain, no kinks. Ive just read of people using a -4 and having problems with over oiling the turbo, Where theres just so much oil it pushes right past the seals and into the compressor side and into the intercooler. I know all the parts of the turbo arent warn, Its a brand new turbo as of this season. I'm almost certain i'm using a -4.


And I believe oil pressure is the normal 50-60psi

Re: S362ett Restrictor Help
 

Do you have a spare -3 to 1/8th or -4 to 1/8 male/male fittings laying around. Its hard to tell in a photo, but the 2 side by side are easy to tell apart.

Re: S362ett Restrictor Help
 

Im fairly certain its a -4 .....thats what bullseye recommends to use with all their turbos right?

Re: S362ett Restrictor Help
 

Yes thats what they recm.

Re: S362ett Restrictor Help
 

Alright, then Bob do you have a -3 line laying around?

Re: S362ett Restrictor Help
 

Josh...Without doing a search in my mess, I have this new line and fitting,Its a Earls premade
PT# 64191948 check this on their web see what it is....Bob

Re: S362ett Restrictor Help
 

That's a -4 line, just looked it up.

Re: S362ett Restrictor Help
 

The smaller line doesnt change your oil pressure issue guys...you need to reduce oil pressure to these turbos. Here's a cheap fix...I took the fitting that goes into the turbo side and welded up the hole and then drilled it .070" all my oil problems went away.

Re: S362ett Restrictor Help
 

So your saying that all I need is a .070" restrictor then? Are you using that setup on a bullseyepower turbo? I just found a .065" restrictor...maybe I'll pick that up and give it a shot. Thats close enough to your .070. It says it's for Journal bearing turbos and large ball bearing ones. Should be good right?

Re: S362ett Restrictor Help
 

Based on talking to a couple reputable sources, people are saying to use a -3an line with no restrictor. I will try that and see if it fixes the problem.

Re: S362ett Restrictor Help
 

The .065" will be perfect. I have the S372 turbo.

Re: S362ett Restrictor Help
 

Been running a s 366 for two seasons

At first I had a 4 an, oil was in the inlet

Switched to a 3 an with no restrictor, not a problem since

Id say it has at least a hundred passes on it with the smaller feed and is daily driven at 515 whp on 93 octane and traps 138 mph

Bullseye said it needed a larger feed but borg recommends the 3 an on their similar 300 sx turbos or at least that's what it says on full races website

I just went with what works

Re: S362ett Restrictor Help
 

-3AN with no restrictor here.

Re: S362ett Restrictor Help
 

I know this is an old thread but I too was having some of these issues when running my s256. I can't remember the oil line size I was using but for the return it was a -10 so I am certain that wasn't the issue. Did any of the suggestions posted here help the issues?