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Re: Quick Spool Valve [Re: Jay Stacey] #443875
September 26, 2015 07:32 am UTC
September 26, 2015 07:32 am UTC
Joined: Aug 2009
Posts: 4,783
Belleville Ontario
Jay Stacey Offline OP
Senior Member, with Far TOO Much Time on Their Hands
Jay Stacey  Offline OP
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Belleville Ontario
Ya.. The qsv is nothing new.. A company called Sound performance biulds and sells them for over 400us. With huge copywrite enforcement...And I believe mine is better designed. MAZDA used in in the rx7 but it didnt work for them.
I think the hx35 8blade is the best to test it out with. We know the 8blade 56mm compressor wheel is good for 52lbs/m in either the bolt on housing.... Or the stock 12cm housing. The goal is to bring the 12cm housing down to a 6cm housing to spool fast. Which is showing some promise, But I have a few ideas to improve the valve. If I can get this thing to hit full spool begore 4000rpms.. Then Ill upgrade the compressor side to a hx40 wheel.


11.45@125,
stock bottom end 6bolt 2g head.
272 hks cams.
Holset hx35
Backyard biult!!
Re: Quick Spool Valve [Re: Jay Stacey] #443941
September 29, 2015 05:10 am UTC
September 29, 2015 05:10 am UTC
Joined: Jul 2015
Posts: 11
Kingston, ON
L
Leif Simmatis Offline
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Leif Simmatis  Offline
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Joined: Jul 2015
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Kingston, ON
How would you improve it? In terms of its flow characteristics or in terms of the mechanical actuation? Flow-wise I don't know that there's much more that you could do short of further shrinking the low-boost inlet to increase velocity. Or possibly shaping the inlet of the valve to funnel airflow towards the low-boost scroll of the hotside?


"Don't blow it up."
Re: Quick Spool Valve [Re: Jay Stacey] #444227
October 09, 2015 09:10 pm UTC
October 09, 2015 09:10 pm UTC
Joined: Aug 2009
Posts: 4,783
Belleville Ontario
Jay Stacey Offline OP
Senior Member, with Far TOO Much Time on Their Hands
Jay Stacey  Offline OP
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Belleville Ontario
The valve dosent close it tight, so it must leak and since the exhaust will flow up the other valute, and thru the valve.. It will create turbulance.i will thiken the center structure so the valve seats better.

So so far Ive got this thing to hit 27psi at 4100rpms, then it sees 29psi at 7500rpms with an airflow of 55.6lbs/m which is more then the average 8blade puts out. Prolly cause the bolt on housing limits the flow to 52lbs/m and the stock twin scroll is too laggy to allow our motors to see the 8blades potential.

LINK is estimatin 489hp right now. With a much better torque curve then the Borg warner with the same set up showing 450hp


11.45@125,
stock bottom end 6bolt 2g head.
272 hks cams.
Holset hx35
Backyard biult!!
Re: Quick Spool Valve [Re: Jay Stacey] #444816
November 06, 2015 05:32 pm UTC
November 06, 2015 05:32 pm UTC
Joined: Oct 2010
Posts: 9,968
Caledon, Ontario, Canada
Bryan Lawrence Offline
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Hey Jay out of curiousity have you been able to find a comparison of a fully twin scroll setup and a quick spool setup? From what I am finding the difference shouldn't be very much.


"Old Blue" 91 Talon TSi AWD
"Super Enthusiast" 91 Talon TSi AWD
Checkout DSMFAQ.com!
Re: Quick Spool Valve [Re: Jay Stacey] #444818
November 06, 2015 07:18 pm UTC
November 06, 2015 07:18 pm UTC
Joined: Jan 2006
Posts: 2,241
Stratford/London
Mike Kuttschrutter Offline
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Originally Posted by Jay Stacey

So so far Ive got this thing to hit 27psi at 4100rpms,


Not bad. I have my setup set at 27psi at the moment too. The hx35 is hitting full boost around the 3600rpm mark with the compounds.
I have an exhaust leak but we aren't too far off. Cool project smile


Stock.
Re: Quick Spool Valve [Re: Jay Stacey] #444819
November 06, 2015 08:39 pm UTC
November 06, 2015 08:39 pm UTC
Joined: Aug 2009
Posts: 4,783
Belleville Ontario
Jay Stacey Offline OP
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Jay Stacey  Offline OP
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Bryan. I dont think Ill ever be able to compare the same set up to a true twinscroll. But in my research, its about the same. In theory the TS is faster spooling then open header but dosent have as much top end power. Results even sho that running the open header to a twinscroll makes more power up top compared to full twin scrolls. This set up should give me the power up top that is lost with Twin scroll and bolt on set ups.

Ive always thought of true twinscroll set ups more for huge turbos that need help spooling but have alot of power up top, that can be sacrificed. Basicly creating a more agressive powerband. Thats sorta what Im doing... But I wont lose the power up top.

Last edited by Jay Stacey; November 06, 2015 08:43 pm UTC.

11.45@125,
stock bottom end 6bolt 2g head.
272 hks cams.
Holset hx35
Backyard biult!!
Re: Quick Spool Valve [Re: Jay Stacey] #444820
November 06, 2015 08:45 pm UTC
November 06, 2015 08:45 pm UTC
Joined: Aug 2009
Posts: 4,783
Belleville Ontario
Jay Stacey Offline OP
Senior Member, with Far TOO Much Time on Their Hands
Jay Stacey  Offline OP
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Belleville Ontario
Mike.. Your also a 2.4l


11.45@125,
stock bottom end 6bolt 2g head.
272 hks cams.
Holset hx35
Backyard biult!!
Re: Quick Spool Valve [Re: Jay Stacey] #444821
November 06, 2015 08:53 pm UTC
November 06, 2015 08:53 pm UTC
Joined: Oct 2010
Posts: 9,968
Caledon, Ontario, Canada
Bryan Lawrence Offline
Senior Member, with Far TOO Much Time on Their Hands
Bryan Lawrence  Offline
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Caledon, Ontario, Canada


"Old Blue" 91 Talon TSi AWD
"Super Enthusiast" 91 Talon TSi AWD
Checkout DSMFAQ.com!
Re: Quick Spool Valve [Re: Jay Stacey] #444822
November 06, 2015 09:11 pm UTC
November 06, 2015 09:11 pm UTC
Joined: Jan 2006
Posts: 2,241
Stratford/London
Mike Kuttschrutter Offline
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Originally Posted by Jay Stacey
Mike.. Your also a 2.4l


I've been on a Bone stock 2.0 with L19's for the past 2 years wink


Have you tried opening the valve mid spool yet??

Last edited by Mike Kuttschrutter; November 06, 2015 09:13 pm UTC.

Stock.
Re: Quick Spool Valve [Re: Jay Stacey] #444823
November 06, 2015 09:22 pm UTC
November 06, 2015 09:22 pm UTC
Joined: Aug 2009
Posts: 4,783
Belleville Ontario
Jay Stacey Offline OP
Senior Member, with Far TOO Much Time on Their Hands
Jay Stacey  Offline OP
Senior Member, with Far TOO Much Time on Their Hands
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Posts: 4,783
Belleville Ontario
Mike change your sig then.. Lal


11.45@125,
stock bottom end 6bolt 2g head.
272 hks cams.
Holset hx35
Backyard biult!!
Re: Quick Spool Valve [Re: Jay Stacey] #444824
November 06, 2015 09:33 pm UTC
November 06, 2015 09:33 pm UTC
Joined: Jan 2006
Posts: 2,241
Stratford/London
Mike Kuttschrutter Offline
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Mike Kuttschrutter  Offline
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yes dear


Stock.
Re: Quick Spool Valve [Re: Jay Stacey] #444825
November 06, 2015 10:09 pm UTC
November 06, 2015 10:09 pm UTC
Joined: Aug 2009
Posts: 4,783
Belleville Ontario
Jay Stacey Offline OP
Senior Member, with Far TOO Much Time on Their Hands
Jay Stacey  Offline OP
Senior Member, with Far TOO Much Time on Their Hands
*****
Joined: Aug 2009
Posts: 4,783
Belleville Ontario
Bryan, that guy seems to have a bit more tuning to do.. But his boost never stops rising. It just keeps biulding.

Mike.. The only reason to open the valve is when the half scroll becomes a restriction. The Bolt on BEP housing restricts the airflow of a hx35 to around 52lbs/m. The T3 housing allows the 7blade hx35 to hit 60lbs/m.

From what I can see, the closed valve limits the air flow to 51lbs but open, I can reach 56lbs. I would like it to open just before 50lbs/m. But link dosent use airflow to control the EGR solinoid... So I take a rough estimate of say 7000rpms.

While driving around all day.. The valve never opens. I never really have the chance to go above 7000rpms on city streets with 30psi and a Holset. But at the strip.. It will only stay closed to biuld boost in first. With nlts.. IT should stay open the whole time.

I dont really know what it will do at the strip... But just doing a full lauch and run on a back road.. Its way faster then the BW. Much better pull.


11.45@125,
stock bottom end 6bolt 2g head.
272 hks cams.
Holset hx35
Backyard biult!!
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