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Old 09-26-2021, 07:04 AM   #2976
Jjjag
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Default Qsv 7163 efr does anyone make the qsv for the twin port

Quote:
Originally Posted by subydude View Post
Don't think of it as boost, think of it as wheel speed and velocity. You have a total flow the housing can handle when open. When the RPM is low velocity through the housing is low. You slam the pedal down and the volume of exhaust increases in velocity through the housing, but it's still not hitting the turbine wheel as quickly as it would at high rpm. So by closing off one half of the housing you're forcing the air to increase in velocity and hit the wheel much faster which spins it up quicker. Then, before you hit choke flow on half of the housing, it flips open so the full housing is available and you continue from there. You're not really losing flow with a QSV so much as increasing velocity at low flow levels and then still maintaining total potential volume at higher RPM.

Technically, it produces more torque down low because you should be able to build more boost down low. Think of it as having a very quick spooling turbo and instead of dying off up top it flips to a bigger turbo and just keeps going.
Qsv 7163 efr does anyone make the qsv for the twin port
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Old 09-26-2021, 08:15 AM   #2977
Jjjag
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Default Bw efr 7163 integrated qsv

Looking for either cast version or someone who can fabricate qsv t4 turbine housing. I've seen alot where they are made in an adapter before the turbo but looks abit average
Page with photo of turbine I'm talking about
Post 1906


https://www.patrol4x4.com/threads/borg-warner-efr6758-turbo-information.338641/page-96#post-7078189
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Old 09-26-2021, 08:16 AM   #2978
Jjjag
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Sorry for the double posts
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Old 10-02-2021, 05:56 PM   #2979
jj_warhorse
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Has anybody used the TSG-1 speed sensor and gauge to log compressor speed using Cobb custom features? What voltages/speeds are you using to set up sensor input for a 7163?
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Old 10-02-2021, 09:24 PM   #2980
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Quote:
Originally Posted by jj_warhorse View Post
Has anybody used the TSG-1 speed sensor and gauge to log compressor speed using Cobb custom features? What voltages/speeds are you using to set up sensor input for a 7163?
The tsg-1 will come with a volatgae range for your turbo. 0 volts = 0 rpms 5 volts = 200k rpms (for my turbo). You'll get the vales with the gauge.

Order it from Bailey engineering - he makes them all for the vendors. I was sent their from BW as I wanted nothing to do with the 'other' big name vendor.
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Old 10-04-2021, 08:24 PM   #2981
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Cool, thanks!
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Old 10-11-2021, 12:55 PM   #2982
Waddlz
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I had to swap out my 0.065 restrictor for the 0.035 one to get the smoke to stop at idle with my 7163.
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Old 10-11-2021, 01:18 PM   #2983
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Quote:
Originally Posted by Waddlz View Post
I had to swap out my 0.065 restrictor for the 0.035 one to get the smoke to stop at idle with my 7163.
I swapped in a 1.5 mm one as the car was smoking a bit on the 2.0 one. I'm curious because it wasn't doing it for a while, but I think the oil drain was slowly getting kinked which led to it. We'll see if the 1.5 solves it. I also found a .9mm vs the .7mm that BW has. Lots of options out there if you look for AN to AN adapters or otherwise vs the over $100 for the BW branded one.
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Old 10-11-2021, 04:11 PM   #2984
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Quote:
Originally Posted by subydude View Post
I swapped in a 1.5 mm one as the car was smoking a bit on the 2.0 one. I'm curious because it wasn't doing it for a while, but I think the oil drain was slowly getting kinked which led to it. We'll see if the 1.5 solves it. I also found a .9mm vs the .7mm that BW has. Lots of options out there if you look for AN to AN adapters or otherwise vs the over $100 for the BW branded one.
Yeah, I don't know if its due to the new engine making more oil pressure than my old one or what but it was smoking really bad with the .065 restrictor and I took the downpipe off and there was a light coat of oil in the turbine housing.

Put the .035 one on, and its stopped completely. I don't want to go any lower tbh, as I think with the .7mm its strongly recommended to use an in-line filter.
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Old 10-14-2021, 08:58 AM   #2985
Homemade WRX
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Quote:
Originally Posted by Jjjag View Post
Looking for either cast version or someone who can fabricate qsv t4 turbine housing. I've seen alot where they are made in an adapter before the turbo but looks abit average
Page with photo of turbine I'm talking about
Post 1906


https://www.patrol4x4.com/threads/bo...6#post-7078189
For the 6758 or the 7163? There is someone that has been selling an actual Borg Warner QSV housing on here. Aside from that I think one of the RX7 tuner shops had done there own housing with internal QSV as well.

Edit: I decided to go find the one on here: https://forums.nasioc.com/forums/sho...warner+housing
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Old 10-14-2021, 10:43 AM   #2986
Full-Race Geoff
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i have one of these housings for a b1 frame 7163 and a b2 frame 7670 - interesting concept and it seems to work well in some applications, but difficult to tune the flap
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Old 10-18-2021, 06:38 PM   #2987
Waddlz
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Just a lil teaser



Yamaha and I are going to hit the dyno to see what the SX-E housing does on an EFR 7163. Supposedly its more efficient, so we plan on doing a back to back comparison from the EFR Compressor housing vs the SX-E housing IE swapping the housing on the dyno and seeing what power it makes.
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Old 10-18-2021, 06:56 PM   #2988
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Quote:
Originally Posted by Waddlz View Post
Just a lil teaser



Yamaha and I are going to hit the dyno to see what the SX-E housing does on an EFR 7163. Supposedly its more efficient, so we plan on doing a back to back comparison from the EFR Compressor housing vs the SX-E housing IE swapping the housing on the dyno and seeing what power it makes.
I almost went that route for the anti-surge ports. Curious to see your results. I still have the 7168 waiting for the next project.
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Old 10-18-2021, 10:51 PM   #2989
yamahaSHO
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The comparison will be done the same day. Everything is ready for a quick swap on the dyno, so the results should be fairly accurate.
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Old 10-19-2021, 10:03 AM   #2990
subydude
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I'd love to do the conversion, but that cover bpv sure is nice and makes plumbing so much easier.
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