Oil Feed Line Restrictor is VERY IMPORTANT!

[canadians14det]

I was reading about the oil feed line restrictor on FA and one person thought that for a ball bearing turbo you should run a 1/32" restrictor (.030) instead of a 1/16" (0.060). Anyone agree with this.. apparently ball bearing turbo's like less oil pressure. What about on a T3/T4 ??

[virus77]

^^ that seems accurate from what I recall

[drifts14x]

Hey, what if you took your -3AN fitting, put it to -2AN, and then put another -3AN fitting on the other side to connect to your oil feed line, because that's what would work best for me, I have no access to any plugs, and my lines are going on today! Please reply soon guys

[hysteria]

i don't understand how turbo's are not built to handle high oil pressure like that... mine is a little leaky, and i was really curious because i have never heard much about this being a big deal... i guess i'll be going to home depot and making one... i am kind of curious though...

i was under the impression that floating bearing turbos would need a pretty significant oil pressure to operate safely and all that... those restrictors with 1/16 " inlet look pretty restrictive... is that really all the oil the turbo needs?

[mkory]

I had no idea turbo's needed that little oil. At least it seems like very little oil.

Why not just use smaller lines?

[Warped]

im pretty sure its not the volume but the pressure that affects the seals

[Warped]

another quick ?1/16" is .0625 so im guessing a .063 restrictor would be just fine correct?

[Titan]

another quick ?1/16" is .0625 so im guessing a .063 restrictor would be just fine correct?

0.063 is 1/16". It's just rounded off to the nearest thou.

[Florida240sx]

Will I need this with my IAP kit?

[Import_Ant]

Will I need this with my IAP kit?

no

[the_momo]

i think i have a very simple solution for this....my restrictor cost me .22 cents.i tapped a 90 degree fitting for my inlet( for clearance issues) to fit a set screw with a small hole drilled in it. took me like 10 minutes. done no problems

[doohopark]

all the problem ive ever had with the oil seals blowing is that the turbo doesnt drain fast enough,ive never liked the idea of taking oil away, so instead of starving it, i just added a scavanging pump to pull oil outta there faster.

[DRIFTEADOR]

doohopark, what size feed and return lines do you have, and whats the flow rating of the pump?

[koukiKA240]

no

y not? i have an iap kit, marc informs me i dont need one but im not sure as to the reason.~Sam

[catty]

I'm also concerned about this as I have a ball bearing turbo and I dont really feel like destroying it. I have heard that some turbo's come with restrictors built into the center section, but I definatly question that. If anyone could shed some light on this I would definatly appreciate it. Looking at my oil feed it looks like an 1/8" hole feeding the center section. Here is a pic of it http://www.ramsites.net/~casasa/Feed.jpg I figure I should probably run a restrictor so I dont chance making my turbo turn into a pretty paper weight, but if anyone knows for sure whether I should or not I would greatly appreciate it.

BTW the turbo is a GT30R and the feed line is from an F-Max kit if that would help.

[Mustangs_Suck]

I have a T25 turbo.

Is this part all I need for my restictor?

http://www.atpturbo.com/Mercha...e=OIL

I've blown 2 of em already....and I need this one to last 3 months until winter storage..so I figured maybe getting one of these will help.

[KA-T]

y not? i have an iap kit, marc informs me i dont need one but im not sure as to the reason.~Sam

If you look at the feed line at the end. It almost looks like it is already restricted. Look how small the hole is at the end of the fitting.



And I'll add this pic just to get perspective of how big the fitting is.



Hmm maybe I'm wrong..but that hole looks about 1/16" diameter hole.

I think this is why the IAP kit does not need it.

[get_up_mark]

yeah iv had a restrictor on my set up but the threads didnt want to tread very well into my turbo inlet. they were a slightly different pitch. i believe it fit fine onto the -3an for my feed. i have a t3t4 turbo. it was always my understanding that as long as ur oil is moving threw the turbo quickly your seals will be fine. if your return line isnt working properly or getting clogged, too low on ur pan or too restricting it is more threating to the seals. if you did your return line correct then the oil is moving threw quickly and is less likely to burn seals.