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Old 02-25-2021, 04:37 PM   #1
TurboQueef
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Default Anyone running a Turbosmart opr T40 Turbo Oil Pressure Regulator

I would like to hear from anyone running this product. Specifically want to know where you plumbed the oil bleed off or return line.
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Old 02-26-2021, 01:12 AM   #2
BlueSTI4Me
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Following...................
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Old 03-01-2021, 07:58 AM   #3
Barge
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I have one that I plan on running but haven't gotten around to it.

The easiest location would be the oil fill tube... unfortunately it's on the wrong side of the motor. I'm not sure how much oil it would really flow. One of the vent ports on the head would probably be the easiest.
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Old 03-01-2021, 08:52 AM   #4
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Old 03-01-2021, 09:25 AM   #5
TurboQueef
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Quote:
Originally Posted by Barge View Post
I have one that I plan on running but haven't gotten around to it.

The easiest location would be the oil fill tube... unfortunately it's on the wrong side of the motor. I'm not sure how much oil it would really flow. One of the vent ports on the head would probably be the easiest.

Yea, the vent tube would be easy but I worry about crankcase pressure blowing it directly into the AOS (or...)
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Old 03-11-2021, 08:29 AM   #6
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Nobody running one of these?
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Old 03-14-2021, 10:15 AM   #7
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Thanks for the feedback. I am considering this configuration:

910 PTFE (PT#3490 -4AN) from the regulator return to a Killer B or Torque solutions billet aluminum oil fill tube. I plan to tap it to fit a -4AN ~ 1/8 NPT fitting (PT # 3250-02-04C).

The run will be a bit longer than I would like but I think the -4AN should be able to provide decent flow back to the pan. (just don't remove cap when engine is running or I bet a nice blast of return oil will be offered forth to the engine bay ;-(

My thoughts about other closer by return options:

Tapping into the valve cover vent tubes is no good because there is a relatively free flow from those to the catch can (or worse yet directly to the intake track) This could cause the return oil to be carried into the catch can / intake. NOTE: Tapping into the passenger side valve cover may be a nice option to reduce the length of the return hose, I am considering this as an option as well... just need to find a spot that won't foster splatter into the vent tube suck...

Tapping into the turbo oil return is no good due to the limited capacity.. the turbo needs every bit of it.

I will keep you posted as I complete my build. I am currently changing over from FP Red stock location turbo to a PTE 6466 rotated turbo so I am a few weeks out to complete the project.

Last edited by TurboQueef; 03-14-2021 at 05:59 PM.
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Old 04-02-2021, 04:17 PM   #8
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Default Completed design and applied it

Hi... so I guess not many Subie dubies are running the turbo OPR. I just finished designing the layout and applying it. I ended up drilling and tapping the OEM oil fill tube.

Background: I am in the process of finally going rotated with an ETS kit and a PTE 6466 turbo. I have heard many folks describing the struggles they face with running PTE's on the street so I am working to give it every opportunity to survive.

One of the struggles I hear about is smoking... and some say it has to do with high oil pressure to the turbo. I discussed with PTE and the tech said oil drain is critical and running a turbo OPR on a subie is not a bad idea due to the relatively high oil pressure.

Regarding oil drain: I discovered that the oil return tube used with the ETS kit has a dead end blockage to a portion of the the PTE oil drain casting... this is a big NO NO per PTE. I plan to address this by using the PTE 10AN O ring fitting and high temp oil drain hose.. more on that in another post.

Today's focus is modifying the OEM oil fill tube to accommodate the TurboSmart T40 oil pressure regulator return line. Below are photos of my install and key points I considered.

I was concerned with the return oil being introduced to the oil fill so close to the small breather port that runs to the AOS... so I used my borescope to confirm that the baffle just under the oil fill tube interface does in fact provide a soft seal (metal to aluminum) thereby keeping the blast of return oil away from that tube.

I will keep you all posted on how this work out.


















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Old 04-03-2021, 09:57 PM   #9
12200AA240
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Is your 6466 journal or ball bearing?
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Old 04-04-2021, 08:08 AM   #10
TurboQueef
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Quote:
Originally Posted by 12200AA240 View Post
Is your 6466 journal or ball bearing?

Crankshaft, it is a ball bearing turbo
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Old 04-05-2021, 03:43 PM   #11
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All of the ball bearing precision turbos I've used, I just put a vibrant restrictor in them. the come with a few orifice sizes. No smoking issues after that.
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Old 04-05-2021, 06:10 PM   #12
TurboQueef
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Quote:
Originally Posted by 12200AA240 View Post
All of the ball bearing precision turbos I've used, I just put a vibrant restrictor in them. the come with a few orifice sizes. No smoking issues after that.
Cool, I am going with the OPR and their high flow oil return line.
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