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Old 03-20-2013, 07:38 PM   #51
300zxturboftw
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Enlarge the shaft slightly, polish the flapper & use a 1/2" rather than 1/4" flange and you have the SP QSV (I would recommend a bigger shaft than pictured above). They are all rectangled with rounded corners.

I'm done here though, I'm not into the whole arguing over nothing. Take it or leave it, you can make it by yourself for a lot cheaper or buy one. How it turns out depends on your own skills, but this is only meant to be informative. Once you try and support this hobby with multiple race cars you will try to find means to save money and go faster.

Wasn't trying to call you out Whatturbolag (obviously came on too strong with the language used). I'd be happy to go out to the track since we are both close to each other and settle it there if you'd like though. Let's hope your car isn't just a BPU =)
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Old 03-21-2013, 01:52 PM   #52
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Lol my car is stock




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Old 09-14-2013, 01:19 PM   #53
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Well I have been looking at these for like 4-5 years. I have looked at building my own as I work with several different alloys all the time and have the ability to make this but for the purpose of trying this out I already bought one. Soooo I have read all the posts here and the other thread and many others from other forums. Overall I see great things but nobody does crap for documenting any real hard set info. This leads me to say screw it and do it.

Current condition of the car, MPS long block, destroked, Bensons sleeved big bore (102.5MM bore), MPS ported heads, kelford 199c cams, MPS rods,H11 head studs, AMR 2' primary headers, custom 2-1/2" uppipe, 3-1/2" exhaust, FP HTA 3586 with .82AR T3. Current tune is E85 and 23psi at 532whp and 433wtrq. This car has the potential for MUCH more as long as the head gaskets can hold (my only real weak point right now but looking at oring if it fails). And of course my good friends at PIA for tuning as Mike has tuned it to its current state.

So the housing I am going to is a ATP 1.01 ar T3 with this QSV. Now I will also need to lengthen the dp the 3/4" as well. Hopefully we will see some REAL data and see if I pick up top end power and better spool i.e. more torque early on.
http://www.atpturbo.com/mm5/merchant...egory_Code=NGH

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Old 09-14-2013, 03:03 PM   #54
WhatTurboLag?
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I am set on a qsv and a BW s200 8070 or a 3582 with the new garrett ts housings at this point in time. Preferably the BW.
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Old 09-14-2013, 04:35 PM   #55
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I am using a QSV on my BWS472 ETR HO....I am sure it is going to help....
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Old 09-15-2013, 03:43 PM   #56
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Quote:
Originally Posted by Sinister redlines View Post
So the housing I am going to is a ATP 1.01 ar T3 with this QSV. Now I will also need to lengthen the dp the 3/4" as well. Hopefully we will see some REAL data and see if I pick up top end power and better spool i.e. more torque early on.
Your high end power might be more of a wash. While the larger A/R does improve flow, you're also adding a restriction via a divided housing (on a single scroll (manifold/up), plus the QSV valve's shaft that's also right in the flow path. My hypothesis here is similar ultimate power, and if the valve performs as claimed, more torque, which would still be a win here. Although, I'm skeptical. A direct comparison with the same A/R housing would definitely provide more useful data on the performance of the valve though, regarding how it effects performance. Results you see here are indirect since the setup has changed and will in itself effect performance.

Regardless... looking forward to seeing the results.
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Old 09-17-2013, 09:51 AM   #57
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.....

Last edited by manys; 09-17-2013 at 11:26 AM.
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Old 09-17-2013, 09:56 AM   #58
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Quote:
Originally Posted by Sinister redlines View Post

Current condition of the car, MPS long block, destroked, Bensons sleeved big bore (102.5MM bore), MPS ported heads, kelford 199c cams, MPS rods,H11 head studs, AMR 2' primary headers, custom 2-1/2" uppipe, 3-1/2" exhaust, FP HTA 3586 with .82AR T3. Current tune is E85 and 23psi at 532whp and 433wtrq. This car has the potential for MUCH more as long as the head gaskets can hold (my only real weak point right now but looking at oring if it fails). And of course my good friends at PIA for tuning as Mike has tuned it to its current state.

So the housing I am going to is a ATP 1.01 ar T3 with this QSV. Now I will also need to lengthen the dp the 3/4" as well. Hopefully we will see some REAL data and see if I pick up top end power and better spool i.e. more torque early on.

Sinister, why not add a QSV to your current setup?

The data will only matter if you do before and after dyno pulls on the same A/R.

Nevertheless, I'm really happy someone will test those so please come back with results!(all 3 of you guys)
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Old 09-17-2013, 11:14 AM   #59
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Quote:
Originally Posted by manys View Post
Sinister, why not add a QSV to your current setup?

The data will only matter if you do before and after dyno pulls on the same A/R.

Nevertheless, I'm really happy someone will test those so please come back with results!(all 3 of you guys)
Because it would not work, I would need to buy a .82 ar twin scroll housing and that doesn't fit into my build plans. I unsure you understand the theory of these. You must have a twin scroll housing and currently I have a single scroll.
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Old 09-17-2013, 11:42 AM   #60
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It would also be kind of interesting to see a comparison between the 1.01 divided housing before and after the QSV, or with the QSV functioning properly vs. locked full open.
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Old 09-17-2013, 01:28 PM   #61
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And that may be an easy reality to test
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Old 09-17-2013, 02:49 PM   #62
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^ fo sho
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Old 09-17-2013, 04:11 PM   #63
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As easy as locking the valve open and doing a pull. In for the results.
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Old 09-17-2013, 04:19 PM   #64
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That will be interesting as well, BUT the real question here is would it perform better than a true twin scroll setup or SS setup. I don't think we're going to see an answer here
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Old 09-17-2013, 04:33 PM   #65
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Quote:
Originally Posted by KillerBMotorsport View Post
That will be interesting as well, BUT the real question here is would it perform better than a true twin scroll setup or SS setup. I don't think we're going to see an answer here
That is what I have been wanting to see for a looong time.
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Old 09-18-2013, 06:21 AM   #66
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There are before and afters on 2jz cars, why wouldn't it work for our motors? There are many qsv's on the street/track, googling the valve with 2jz or 4g63 will net you some threads.
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Old 09-18-2013, 08:37 AM   #67
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I just did a quick search. Lots of stuff from the company making and selling them, but I didn't see any independent comparison data? If you know of a link I'd like to check it out.
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Old 09-18-2013, 08:40 AM   #68
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Last year I had a SP unit come apart and kill a ball bearing GT42. It wasn't a cheap failure. I've got a "updated" on one of my cars now and it does help, however that car doesn't see a lot of abuse. I still wouldn't run one on a car that's getting a lot of abuse/long pulls as I don't have a lot of faith in the material in that environment.

The expansion/contraction of the components is likely why the OE internally gated wastegate flapper doors are floating and not fixed.

Thanks.
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Old 09-18-2013, 10:20 AM   #69
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Kb:

http://www.supraforums.com/forum/sho...SIDE&p=7459428

In class, will look for more.

Edit:

http://www.supramania.com/forums/sho...e-dyno-results
Tested, but pic links are dead, just read the thread and comments. Again, this is no surprise, similar stuff from many credible people in the tuning world.

Same: pics dead...http://ls1tech.com/forums/forced-ind...ke-graphs.html

Edit: found sp's vid, results nearing end. http://m.youtube.com/watch?v=1Voc7II...%3D1Voc7II9NC4

Btw, people who test stuff and post results (as hobbiest's(sp) i meant sp as in spelling of that word, but realized it looked like sound performance) are awesome, and should be thanked more often!

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Old 09-18-2013, 01:17 PM   #70
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OK I looked through the WHOLE three year old thread. There was one dyno plot that in all honesty looked too smooth to be true. Zero oscillations that you would normally see on a dyno plot and zero changes when the gate opens. Assuming there would definitely be visual evidence that the gate opens since you are doubling your flow, or cutting in half your backpressure is another way to look at it.

If this were a good product, making the claimed 150whp, it would be getting a lot more press than the occasional "I came across this and it looks like it might make some magic" threads. I think the theory is neat, the design could have been better executed, but until I see some repeatable quantitative data that shows it actually works (besides the manufacturer's claims) I will remain a skeptic.

Don't get me wrong, I'd buy this product if it had a documented feedback behind it, but I fear it will works as well as those magnets you can zip tie to your fuel line and gain 6 mpg
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Old 09-18-2013, 01:18 PM   #71
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My car is more of a street car anyway, I am getting the updated Ti version so hopefully that will help. Honestly going from. .82Ar to a divided 1.01Ar and if I pick up spool and some power it will be pretty obvious it works.
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Old 09-18-2013, 01:20 PM   #72
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Agreed KB, but the idea seems sound. Honestly I think it hasn't taken off in our crowd because nobody wants to spend the dough to test it. Let alone modify their piping to add it.
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Old 09-18-2013, 01:22 PM   #73
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With my 5000 to 5200 rpm spool I am willing to try it
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Old 09-21-2013, 12:45 PM   #74
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I am not 100% sure but its possible that Moore Performance tested one of these a while back. I talked to them about this in 2011 and they said that they planned to look into it in the future but I totally forgot about it.
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Old 09-22-2013, 04:52 PM   #75
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Quote:
Originally Posted by KillerBMotorsport View Post
That will be interesting as well, BUT the real question here is would it perform better than a true twin scroll setup or SS setup. I don't think we're going to see an answer here
We will absolutely find out if t will perform better than an SS setup, since that's what is on his car right now. Better than a twin scroll setup? Those results we won't have. Probably ever. A good twin scroll setup isn't cheap, those who produce them aren't likely to donate one for testing. (How about you Chris? Would you be willing to build one of your twin scrolls to put into this test?) And those that pay hard earned cash probably are under two constraints:
A: I just payed a boat load for this header and I don't really want to prove to everybody that the same or better performance could be had for half the price.
B: I just payed a boat load for this header and I'm not going to donate its use to some jack wagon that's just going to abuse it and send it back.

We'd all like to see irrefutable evidence that this works better than xyz setup. But we won't get that. All we're going to get is hey, this spools pretty good compared to this or man, this sucks compared to this. You don't have a direct comparison on your $5k low mount offering (which looks and performs fantastic as far as im concerned), so I would say expecting to see multiple comparisons for a product that costs about 1/8th the money is asking a lot. I'm excited to see the results. I think it's performance is contingent on having a hot side that is capable of enough flow on the turbine side to support the engine without choking it. Those who have tried it on 12cm hot sided hx35 's have had poor results, showing that the engine is choked until the other side opens up. I just want to see its performance on our platform.
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