2010 Tial QR BOV with stock piping solution
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Evolved Member
iTrader: (12)
Joined: May 2008
Posts: 1,028
Likes: 2
From: Chicago, IL
2010 Tial QR BOV with stock piping solution
So we all know the new Tial QR been out for a month. This is some of the information I found from a vendor STM in the evo forum.
Pics of Evo 9 BOV compared to the Tial QR from one of the evo members.
Just from looking at the chart for the idle spring rate I believe our Evo X needs the -11 psi spring for -18 to -21 in/Hg. If I remember someone said to go one spring up which is down when your in the negatives for what your car idles at so that would be the -12 psi spring. Someone need to confirm that.
My proposed solution for us Evo X members to use thing on our stock rubber hoses and piping without having to weld a flange to our UICP. Since the Tail QR has a 50mm opening (1.96") and our hose is around 1.25"-1.375" diameter, I found some hose couplers that go from 2" to 1.5" and 1.5" to 1.25". I wonder if this will work if someone want to test it out. It's a $5 solution from home depot at the plumbing aisle.
Pics of Evo 9 BOV compared to the Tial QR from one of the evo members.
Just from looking at the chart for the idle spring rate I believe our Evo X needs the -11 psi spring for -18 to -21 in/Hg. If I remember someone said to go one spring up which is down when your in the negatives for what your car idles at so that would be the -12 psi spring. Someone need to confirm that.
My proposed solution for us Evo X members to use thing on our stock rubber hoses and piping without having to weld a flange to our UICP. Since the Tail QR has a 50mm opening (1.96") and our hose is around 1.25"-1.375" diameter, I found some hose couplers that go from 2" to 1.5" and 1.5" to 1.25". I wonder if this will work if someone want to test it out. It's a $5 solution from home depot at the plumbing aisle.
Yup, those were my pics. :-) STM suggested for me to drop 1 spring rate. It's completely opposite common sense, thinking a stiffer spring would hold it closed..but it's boost pressure that's holding it closed, not the spring.
My only concern is trying to clamp the reducer onto the bov. The base only has a small lip for the vband clamp, and it tapers up from there..it may want to try to slip off, but I guess with someone holding it in place, and tighten the crap out of the clap, it should hold.
My only concern is trying to clamp the reducer onto the bov. The base only has a small lip for the vband clamp, and it tapers up from there..it may want to try to slip off, but I guess with someone holding it in place, and tighten the crap out of the clap, it should hold.
Thread Starter
Evolved Member
iTrader: (12)
Joined: May 2008
Posts: 1,028
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From: Chicago, IL
Or you can use the supplied flange and bolt it to the BOV and use the extended sleeve part of the welded flange and shove that end into the reducer.
Last edited by raytrix; Mar 21, 2010 at 12:21 PM.
So we all know the new Tial QR been out for a month. This is some of the information I found from a vendor STM in the evo forum.
[IMG]http://www.streettunedmotorsports.com/parts/b/tial_q_r_bov.jpg[/MG]
[IMG]http://www.streettunedmotorsports.com/parts/b/tial_alpha_q_spring_chart.jpg[/MG]
[IMG]http://www.streettunedmotorsports.com/parts/b/tial_q_r_bov2.jpg[/MG]
Pics of Evo 9 BOV compared to the Tial QR from one of the evo members.
[IMG]http://img705.imageshack.us/img705/2710/img3379a.jpg[IMG]
[IMG]http://img294.imageshack.us/img294/1717/img3383.jpg[IMG]
[IMG]http://img29.imageshack.us/img29/6691/img3381ft.jpg[IMG]
[IMG]http://img64.imageshack.us/img64/6099/img3373k.jpg[IMG]
[IMG]http://img202.imageshack.us/img202/5664/img3376v.jpg[IMG]
Just from looking at the chart for the idle spring rate I believe our Evo X needs the -11 psi spring for -18 to -21 in/Hg. If I remember someone said to go one spring up which is down when your in the negatives for what your car idles at so that would be the -12 psi spring. Someone need to confirm that.
My proposed solution for us Evo X members to use thing on our stock rubber hoses and piping without having to weld a flange to our UICP. Since the Tail QR has a 50mm opening (1.96") and our hose is around 1.25"-1.375" diameter, I found some hose couplers that go from 2" to 1.5" and 1.5" to 1.25". I wonder if this will work if someone want to test it out. It's a $5 solution from home depot at the plumbing aisle.
[IMG]http://img407.imageshack.us/img407/9724/215hose.jpg[IMG]
[IMG]http://www.streettunedmotorsports.com/parts/b/tial_q_r_bov.jpg[/MG]
[IMG]http://www.streettunedmotorsports.com/parts/b/tial_alpha_q_spring_chart.jpg[/MG]
[IMG]http://www.streettunedmotorsports.com/parts/b/tial_q_r_bov2.jpg[/MG]
Pics of Evo 9 BOV compared to the Tial QR from one of the evo members.
[IMG]http://img705.imageshack.us/img705/2710/img3379a.jpg[IMG]
[IMG]http://img294.imageshack.us/img294/1717/img3383.jpg[IMG]
[IMG]http://img29.imageshack.us/img29/6691/img3381ft.jpg[IMG]
[IMG]http://img64.imageshack.us/img64/6099/img3373k.jpg[IMG]
[IMG]http://img202.imageshack.us/img202/5664/img3376v.jpg[IMG]
Just from looking at the chart for the idle spring rate I believe our Evo X needs the -11 psi spring for -18 to -21 in/Hg. If I remember someone said to go one spring up which is down when your in the negatives for what your car idles at so that would be the -12 psi spring. Someone need to confirm that.
My proposed solution for us Evo X members to use thing on our stock rubber hoses and piping without having to weld a flange to our UICP. Since the Tail QR has a 50mm opening (1.96") and our hose is around 1.25"-1.375" diameter, I found some hose couplers that go from 2" to 1.5" and 1.5" to 1.25". I wonder if this will work if someone want to test it out. It's a $5 solution from home depot at the plumbing aisle.
[IMG]http://img407.imageshack.us/img407/9724/215hose.jpg[IMG]
