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Old 09-09-2019, 12:58 PM   #2901
yamahaSHO
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I am convinced these need a restrictor. A .065" wasn't enough for mine, so I am going to try a .035" this week. At this point, I'd rather they had not put a "built-in" restrictor.

After talking with Geoff, he suggested my crankcase pressures/AOS/etc may be to blame, but I never had this issue with this exact same setup with a 20G.
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Old 09-09-2019, 07:10 PM   #2902
berserksti2
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Where are you guys buying your oil restrictors from? Link(website) of the actual restrictors? I need to get one for my 7670. I bought a spare one thinking it's blown but it's still going strong minus the oiling issue.
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Old 09-09-2019, 07:30 PM   #2903
brecks
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Quote:
Originally Posted by berserksti2 View Post
Where are you guys buying your oil restrictors from? Link(website) of the actual restrictors? I need to get one for my 7670. I bought a spare one thinking it's blown but it's still going strong minus the oiling issue.
ATP turbo
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Old 09-09-2019, 07:40 PM   #2904
Modi005
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I also tried the .065 restrictor but on my 7163 to no avail.. oil is getting past the compressor and exhaust side. I threw a .035 restrictor on it today but haven't driven it yet.
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Old 09-09-2019, 07:57 PM   #2905
Waddlz
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did a small test today.

removed my .065 restrictor, hooked up my mechanical oil pressure gauge right at where the turbo oil feed is. So just like borg warner says to run.

built STi. Mobil 1 15w50. For reference, front port oil pressure is 95 psi cold. 35 psi warm idle.

Cold start:

Warm idle:


How I tested


And then a video just to see how fast the oil pressure climbs. I revved to 4500 RPMs

https://i.imgur.com/JYsaxsy.mp4
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Old 09-09-2019, 07:59 PM   #2906
Waddlz
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I am going to test with a .065 restrictor next. just need to extend my 4AN oil feed a bit.
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Old 09-12-2019, 12:50 PM   #2907
blurred
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My friend had a turbo brz on his dyno recently for a tune and it smoked like crazy, had a bw efr, oem restrictor, and a dual catch can setup.
Unplugged the cans and the smoke went away, didn't really investigate the reasons but as noted above, ensure that you don't have crankcase pressure pushing the oil through.
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Old 09-12-2019, 12:56 PM   #2908
yamahaSHO
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This is my AOS intake source... Works great, to the point it leaned out my AFR by .6 and had to adjust the MAF.


Quote:
I have never been very happy with how I had my AOS being vented back into the intake, in any version I had. My first setup, I had the hose Y'd to two ports on the turbo inlet, just to keep up the volume, but it was a mess. When I did the new turbo setup, I tried to clean it up and use one hose, but that required me to reduce the 5/8" hose to something smaller to fit on the inlet. I don't think this kept up as I had some oil seeping out of the cartridge of the turbo. I could also never feel any vacuum on the hose when I disconnected it while the car was running (didn't even change how the car ran with that vacuum leak).

That said, I took my intake off and had a buddy weld up a port in it to not only keep the size of the hose consistent, but actually create some vacuum on the AOS itself. I need to finish taking the powder coat off and repaint it, but here's what I got.





Design is similar to what you would find in a PCV exhaust dump setup (I also did this on my S2000... I should test the flow on it too).



I was curious on how well it would draw some flow from the port, so I blew into the intake and put my finger in the port, and with it wet, I could feel air being pulled in at just the low flow of my breath. I took it a step further and used my air compressor to test...

Mounted to the car:








http://www.youtube.com/watch?v=1oR9xEQiDY8

Last edited by yamahaSHO; 09-12-2019 at 01:06 PM.
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Old 09-14-2019, 10:32 PM   #2909
RckyMtnGT
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I'll be interested in the .035 restrictor results. I'm not sure I'm having the same problem, but it's an easy place to start. Getting intermittent puffs of smoke on start up. Some days its non-existent. Other days its a big ol' cloud of smoke for a couple of seconds. Clears up real quick, and i've never seen so much as a hint of smoke while driving. Fingers crossed its something simple, otherwise I'll have to start looking at deeper issues, which I don't want to see at 9k miles on my build!

Guess I should add my hat to the Colorado EFR ring. 07 LGT with 6758/.84 v-band on a built block, Killer B header, full race down pipe, STI 6 speed, flex fuel, id1300's, etc etc etc. 396whp/401tq @24psi on a low reading Mustang dyno. I'd really like to get the dual port wastegate actuator on there and see if we could hold a little better up top, I think there's a little bit of power left on the table. Regardless, it's a blast to drive and there's tons of power for my daily!
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Old 09-14-2019, 10:38 PM   #2910
yamahaSHO
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I generally find puffs of smoke on startup to be an overfill. I had that and then starting putting less oil in it and it went away. Otherwise, I'd look at valve seals. It's not really hot enough at the turbo to puff smoke at startup.

A dual port wastegate is a must. I had to have one guy here, on an EWG utilize his second port to hold boost on a 7163.

I will install my new restrictor tomorrow. Waiting on new seals for my wing that I took off for detailing before I drive.
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Old 09-15-2019, 01:12 AM   #2911
RckyMtnGT
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Valve seals is what I'm afraid of...Don't relish the idea of tearing things apart this soon, but may be headed that way. Had the heads gone over at Heads by Drew out in Aurora, valves/springs/guides/seals all new. Would be disappointing, but things can certainly happen.

I've got the Killer B oil pan/baffle/pick up installed, usually takes a 5L jug and a splash of the last jug to fill up. Maybe I'll try to center the level next time as opposed to the full mark. Uses very little oil between (admittedly short) oil change intervals, barely a quarter quart at 1500 miles.
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Old 09-15-2019, 01:18 AM   #2912
yamahaSHO
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I let my car sit for months at a time. If I check the oil after sitting, it's like 2 quarts over full. Food for thought...
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Old 09-15-2019, 08:21 AM   #2913
Scuby04STi
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Quote:
Originally Posted by yamahaSHO View Post
I let my car sit for months at a time. If I check the oil after sitting, it's like 2 quarts over full. Food for thought...
Checking oil is a funny thing, I'm sure if you let it sit you will find a lot will eventually find the pan.

I work in the marine industry and its funny because some outboard engines want you to fill them, then trimming the all the way up, leaving it OVERNIGHT and then trim it down and check level. Who the bloodyhell is actually going to be willing to do that when they check their oil? Lol
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Old 09-21-2019, 08:16 PM   #2914
Waddlz
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Finally got my fittings to extend my turbo feed line a bit for this test. but this is with the .065 restrictor

Cold start

Warm idle



There is about a 10 psi drop from no restrictor to .065.
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Old 09-23-2019, 02:48 PM   #2915
silversurfer05
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This has become a troubleshooting post. And doesnít belong here anymore. Not trying to be rude but it has no purposes in this particular section. This post being bumped up every single day itís kind of annoying when youíre trying to research different set ups and learn about them. Just stating what a moderator once said to me about my posts
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Old 09-23-2019, 06:10 PM   #2916
Waddlz
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Quote:
Originally Posted by silversurfer05 View Post
This has become a troubleshooting post. And doesnít belong here anymore. Not trying to be rude but it has no purposes in this particular section. This post being bumped up every single day itís kind of annoying when youíre trying to research different set ups and learn about them. Just stating what a moderator once said to me about my posts
uh, what?

This post is about the EFR turbos and their setups on EJs...I don't see how this doesn't pertain to anyone using an EFR turbo on an EJ.

I was doing an experiment for people to see what various restrictors did in order to prevent excessive oil burning.

Don't like it? don't comment.
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Old 09-23-2019, 10:30 PM   #2917
NSFW
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I'm pretty sure that comment was about moderation more than anything else.

Getting back on topic though... has there been a "next gen" from Borg Warner since the EFRs came out in 2012?
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Old 09-24-2019, 11:09 AM   #2918
Waddlz
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Quote:
Originally Posted by NSFW View Post
I'm pretty sure that comment was about moderation more than anything else.

Getting back on topic though... has there been a "next gen" from Borg Warner since the EFRs came out in 2012?
I know they released some newer B2 EFRs last year.

the 8474 and 9280.

but nothing in the B1 frame so far.
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Old 09-24-2019, 12:09 PM   #2919
subydude
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Some minor updates on the B1 wheels for better aero, but no housing updates. The B2 sizes as Waddlz said and some other tweaks are all I know of.
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Old 09-25-2019, 08:18 PM   #2920
1qukSti07
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I finally finished break-in and got the car tuned. So far the car is running amazingly, this turbo rocks!

Main components for the build:
-Built block (Darton sleeves, Manley pistons and rods, king bearings)
-Built heads (stock cams, Manley springs and titanium retainers, GSC valves, and in-house PnP)
-EFR7163 with external WG routed back into the downpipe
-Custom FMIC with rotated intake mani
-FIC 1650cc injectors with hardwired walbro 450


I do all my own fab and engine building, aside from the machining.

I mainly use the car for AutoX and track days. On the last build and tune (26psi) I ran 11.5 @123 (I'm not much into drag racing). I'll take the track soon and try to dip into the 10s.

The current tune is by Mikey Botti, peaks at 29.6psi and tapers to 27psi by redline. We pulled a few degrees out of the tune in the midrange to keep some kind of longevity for this engine lol

Below is the virtual dyno, I'll be taking the car to a real dyno in the next few weeks for a comparison.

I highly recommend this turbo for anyone from a daily to track car!



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Old 09-26-2019, 04:12 PM   #2921
Waddlz
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Very nice!

that torque curve is great.

on a side note...rotated intake manifold + AC? explain!
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Old 09-26-2019, 05:54 PM   #2922
1qukSti07
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Quote:
Originally Posted by Waddlz View Post
Very nice!

that torque curve is great.

on a side note...rotated intake manifold + AC? explain!
Thanks!

I have iAG 8mm phelonic spacers, and a smaller alternator belt. It barely clears!

I still occasionally drive the car to work and meets, Florida is too hot to be without AC lol
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Old 09-27-2019, 04:35 PM   #2923
rocklizzard91
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I've been watching this thread for a while and the more I see you guys post back and forth I keep changing my mind. I've got an EJ207 and I'm shooting for about 450whp on e85 and I'm torn been the 7163 (what I've been leaning toward) and the 6758. The car is just a toy I occasionally go play around with autocross and track days but it is nothing competitive. What would be a better fit with a wider powerband and be more "fun"?
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Old 10-09-2019, 10:34 PM   #2924
'05CrystalGray
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2005 STi, stock motor, Full Race EFR 7163 kit.

Does anyone have issues with the car going to wastegate boost when shifting really fast? If I shift normal/fast the car hits target boost each shift. But when I race or do flatfoot shifting, the car will hit target, shift happens and then sits at wastegate boost until I feather the throttle.

Could this be because I need the stiffer BOV spring?

As a side note, will a stiffer spring require a retune? Anybody switched between the two? I've heard it helps with spool and response.
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Old 10-09-2019, 10:52 PM   #2925
yamahaSHO
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What is your boost resume PSI set at?

BOV does not need a tune. *I initially read it as a wastegate spring.*

Last edited by yamahaSHO; 10-12-2019 at 02:16 PM.
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