SM00TH976

ok, my oil line for my turbo is a -3AN, which right off the bat is a problem since most shops only deal with -4AN oil lines. the problem is i need an inline oil restrictor. i picked up a -3AN oil restrictor, but i can't attach it to the 90degree elbow on top of my turbo. i have to have this elbow due to hood clearances, the line sticks straight up without it. here's a pic of the elbow and my restrictor:



i need some kind of coupler to connect the two. the ends are exactly the same on both peices, meaning i can replace the elbow with the restrictor, and everything screws together fine. knowing that, i should be able to find out the size and/or pitch of the threads so that i could get some kind of basic coupler. anyone know of a coupler that would work? the shop that i bought the restrictor from saw that picture and said they didn't know of any fitting that would join the two. i imagine the peice would look something like this:


the last resort is buying a whole new -4AN line with filter, which i would like anyway, but i don't want to spend $140 on that right now. can anyone help or at least point me in the direction of a shop who may sell what i'm looking for?

DJ Gurgla GSR

First off, most hondas use -3an lines. not -4

second, if its a journal bearing turbo (NOT ball bearing) then you most likely do not need any oil restrictor.

That elbow you have is pretty ghetto. and huge.

atpturbo.com or summitracing.com will have nearly every fitting you could need for the job.

SM00TH976

it's a ball bearing turbo.

the elbow is not huge, it's the size of my pinky. i don't understand what you mean by calling it ghetto. you want me to get it chromed or something?

i'll check out the links.

Chris22215

if you've got a ball bearing turbo, they all have an oil restrictor built in.

SM00TH976

no they do not. you should stop spreading mis-information, because i've read that a million times on this board and lo and behold, there is no restrictor built into my turbo, unless you call a -3AN fitting a restrictor.

MOST new ball bearing turbos have a restrictor, NOT ALL, and certainly not mine.

dpetro1

i tried searching around but im feeling your pain. i cant find a female -> female AN coupler anywhere. only other thing i could think of was to get a small piece of stainless line with -3 ends to connect the elbow to the restrictor.

onefstek

I took a an-4 union and welded it shut, then I drilled a .030" hole throught the center where I welded it and voala....... instant oil restirctor.

SM00TH976

^ yeah i was thinking about doing something like that. i'll probably save that as a last resort before buying a -4 line setup.

actually i think i just found what i needed. i should be able to screw this into the turbo housing, and then screw my 90 degree elbow right into the top of it.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">Input is 1/8" NPT male and output is 1/8 NPT female.</TD></TR></TABLE>

TURBOFTW

iTrader: (1)

If you do in fact have a GT series turbo IT DOES have a oil restrictor...Why do you think you have to use a 7/16 inverted flare for the oil feed fitting instead of the standard 1/4npt fitting? If you need the fitting for your turbo i have it in -3AN...

a1320addict

iTrader: (1)

How about this:

1/4 NPT to -4 AN Male Restricted (.035) off the inlet
<A HREF="http://www.atpturbo.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=ATP-OIL-021&Category_Code=GTBB
" TARGET="_blank">http://www.atpturbo.com/Mercha...TBB
</A>

-4 AN to -4 AN 90º Male-to-Female
http://www.atpturbo.com/Mercha...e=FTG

-4 AN Female to -3 AN Male
http://www.atpturbo.com/Mercha...e=FTG

SM00TH976

well, it came from your shop (phoenixturbo), so maybe you can help me out. to the best of my knowledge it is not a GT turbo, it is just a T4/T67 ball bearing. i do believe you are correct about the fitting being an inverted flare. it does not look like the fitting on that NPT restrictor i posted.

you sold the turbo to Sai, i bought his civic knowing that the car was blowing bluish-white smoke. i purchased the car a few days after he got the turbo back from you. he had sent it back to you guys to have it checked out under warranty, and i'm sure you wouldn't send back a faulty turbo. after oil started coming out of the compressor housing however, i knew something was up. he was told that there was a built in oil restrictor, but i did not see one, and all the white smoke went away after i installed the external restrictor. i know you guys wouldn't send back a turbo with bad seals, so i figured it was too much oil pressure.

so if there is in fact one in place inside the center cartridge, it is not doing it's job. that turbo sees 85-90 psi of oil pressure, so maybe that is still pushing too much pressure through the seals. the restrictor size in the turbo may be appropriate for lower oil pressure setups, but in my case it is not working.

any insight you could offer would be very helpful. it looks like this may be the solution to my problem. i could screw the restrictor i already have into the turbo housing, and then screw the new 90 degree fitting onto it, and the screw my hose onto the 90 degree fitting. thanks 1320addict

TURBOFTW

iTrader: (1)

Is this how your inlet looks?

SM00TH976

yeah, it looks like that. did you get a chance to see my response to you?

TURBOFTW

iTrader: (1)

I pm'd you

a1320addict

iTrader: (1)

no problem

I'm sure Ken can take care of the rest

SM00TH976

ok, so i just spoke with anthony from phoenix turbo. he said that the hole in the pic he posted is the restrictor. but in comparison to the restrictor that i have, that hole is massive.

HOWEVER, he has the exact same turbo as me, and has had no problem with it blowing smoke. the only difference is he uses a -4AN oil supply line, whereas mine is a -3. so he is sending a -4 line for me to check. this way, i will be able to compare his setup, to a -3 inline restrictor setup. i will keep you all posted.

by the way, my turbo is not a GT turbo, but anthony says it uses a GT center cartridge. i really don't think the hole in the center cartridge is small enough to cut down on that oil pressure. hell, the line going to my oil pressure gauge is smaller than that and it still sees 80-90 psi.

so we'll see how it goes shortly. (and i'm not looking forward to disconnecting the oil line again from the back of the block. that's even more of a PITA than changing the knock sensor on a DSM.)

one last thing, phoenix turbo are good guys. it's great to see a vendor who actually takes care of their customers. :

oscarmayer

why not get a -3 oil line with a 90* fitting on the end like I have?

Stan at fast-turbo.com has them for a good price.

SM00TH976

i will be using the -3 elbow that i posted with the restrictor and -3 line, like i said in my last post.

and i will also try a -4AN line without the restrictor to see if it works as well.

TURBOFTW

iTrader: (1)

Glad i could be of help...

onefstek

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PeakBOOST &raquo;</TD></TR><TR><TD CLASS="quote">If you do in fact have a GT series turbo IT DOES have a oil restrictor...Why do you think you have to use a 7/16 inverted flare for the oil feed fitting instead of the standard 1/4npt fitting? If you need the fitting for your turbo i have it in -3AN...</TD></TR></TABLE>

Well I just got a GT4088R straight from Garrett and it does NOT have the inverted flare on the oil inlet side. So with that in mind NOT all GT series turbos have an oil restrictor.

TURBOFTW

iTrader: (1)

It has an oil restrictor built in there, you will be able to see the seat BUT it is not tapped on the bearing housing...That is why you have to run oil feed flange....Same goes for the GT42R...But im sure you know this