Re: Quick Spool Valve
[Re: Jay Stacey]
#443941
September 29, 2015 05:10 am UTC
September 29, 2015 05:10 am UTC
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Joined: Jul 2015
Posts: 11 Kingston, ON
Leif Simmatis
Newbie on Probation
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Newbie on Probation
Joined: Jul 2015
Posts: 11
Kingston, ON
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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."
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Re: Quick Spool Valve
[Re: Jay Stacey]
#444227
October 09, 2015 09:10 pm UTC
October 09, 2015 09:10 pm UTC
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Joined: Aug 2009
Posts: 4,783 Belleville Ontario
Jay Stacey
OP
Senior Member, with Far TOO Much Time on Their Hands
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OP
Senior Member, with Far TOO Much Time on Their Hands
Joined: Aug 2009
Posts: 4,783
Belleville Ontario
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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!!
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Re: Quick Spool Valve
[Re: Jay Stacey]
#444816
November 06, 2015 05:32 pm UTC
November 06, 2015 05:32 pm UTC
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Joined: Oct 2010
Posts: 9,968 Caledon, Ontario, Canada
Bryan Lawrence
Senior Member, with Far TOO Much Time on Their Hands
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Senior Member, with Far TOO Much Time on Their Hands
Joined: Oct 2010
Posts: 9,968
Caledon, Ontario, Canada
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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!
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Re: Quick Spool Valve
[Re: Jay Stacey]
#444819
November 06, 2015 08:39 pm UTC
November 06, 2015 08:39 pm UTC
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Joined: Aug 2009
Posts: 4,783 Belleville Ontario
Jay Stacey
OP
Senior Member, with Far TOO Much Time on Their Hands
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OP
Senior Member, with Far TOO Much Time on Their Hands
Joined: Aug 2009
Posts: 4,783
Belleville Ontario
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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!!
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Re: Quick Spool Valve
[Re: Jay Stacey]
#444821
November 06, 2015 08:53 pm UTC
November 06, 2015 08:53 pm UTC
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Joined: Oct 2010
Posts: 9,968 Caledon, Ontario, Canada
Bryan Lawrence
Senior Member, with Far TOO Much Time on Their Hands
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Senior Member, with Far TOO Much Time on Their Hands
Joined: Oct 2010
Posts: 9,968
Caledon, Ontario, Canada
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"Old Blue" 91 Talon TSi AWD "Super Enthusiast" 91 Talon TSi AWD Checkout DSMFAQ.com!
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Re: Quick Spool Valve
[Re: Jay Stacey]
#444825
November 06, 2015 10:09 pm UTC
November 06, 2015 10:09 pm UTC
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Joined: Aug 2009
Posts: 4,783 Belleville Ontario
Jay Stacey
OP
Senior Member, with Far TOO Much Time on Their Hands
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OP
Senior Member, with Far TOO Much Time on Their Hands
Joined: Aug 2009
Posts: 4,783
Belleville Ontario
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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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