cloneman315
Active member
Re: Quick Spool Valve - interesting idea
typical supra price tag also 600.00.....
typical supra price tag also 600.00.....
Quick Spool Valve - interesting idea
- Thread starter 3rd_amigo
- Start date
3rd_amigo
New member
Re: Quick Spool Valve - interesting idea
I talked to my good friend/turbo guru, he sent me this link: http://www.dieselperformance.com/index.php/product/index/202P
I didn't see a price, but he said he can get it much cheaper.
Edit: Saw the price, waiting to see what my buddy can get them for. Almost make me wish mine was a twin scroll! You could easily modify the stock manifold to make the work.
I talked to my good friend/turbo guru, he sent me this link: http://www.dieselperformance.com/index.php/product/index/202P
I didn't see a price, but he said he can get it much cheaper.
Edit: Saw the price, waiting to see what my buddy can get them for. Almost make me wish mine was a twin scroll! You could easily modify the stock manifold to make the work.
![Quickstop [UK]](/data/avatars/m/5/5165.jpg?1570199786){kind=avatar}
Quickstop [UK]
Combating adversyty.
Re: Quick Spool Valve - interesting idea
As far as using the actuator, I would be worried that the signals might be confused. If you had the WG trying to open at the same time as this then you'd dump boost real fast and conversely, if this gate closed and the WG was closed, you might get some big spikes. It might be hard to control. If separate though, probably fine.
I like the diesel one you posted. Different spring pressures might be the secret and just have a dumb system.
I actually have a spacer for my GT35R and something like this looks like a pretty easy install. Shame my trans is U/S.
As far as using the actuator, I would be worried that the signals might be confused. If you had the WG trying to open at the same time as this then you'd dump boost real fast and conversely, if this gate closed and the WG was closed, you might get some big spikes. It might be hard to control. If separate though, probably fine.
I like the diesel one you posted. Different spring pressures might be the secret and just have a dumb system.
I actually have a spacer for my GT35R and something like this looks like a pretty easy install. Shame my trans is U/S.
dgoodhue
BuSTeD 4.3
Re: Quick Spool Valve - interesting idea
High HP Supra's in general have a narrow power band and terrible lag. Its what happens when you put a big ass turbo on 3.0L motor. They often have poor drivability as street car; some of videos I have seen of fast Supra, they take a few seconds to even spool up on the highway. The highway should be one the places where the turbo take the least time to spool up. Poor drivability as a street car is what is driving this mod.
Our truck motors have relatively low rpm operation and with a relatively wide operating range. I am not saying their is not benefit to a mod like this, but its not going to drastically improve drivability. I don't think you will see better track times if the stall converter and turbo are properly sized for the motor. In some case it may be slightly slower on the top end, depending where the turbo in its efficiency range. (per the manufacturers statement about a 5% reduction in the A/R because of the restriction)
Even if our stock turbo was a twin scroll. Its still going to need to be brake torqued (it would be easier to do) for boosted launch (stress on transmission). The spacers is going to require that the DP be modified. The stock turbo isn't that far from its peak potential, so it would plate restriction would slightly reduce the peak HP potential as well.
If you want to reduce stress on the transmission from doing a boost launch, you can get a higher stall converter with 2 step.
My Syclone has a relatively small turbo (PTE61) for the motor. I have a moderate custom cam, good flowing vortec heads (both improve spool up), ball bearing turbo and moderate stall converter. I chose a turbo on the smaller side for street drivability. Anyways I have traction issues, it spools too fast as it is. If I launch at 5 psi (easily achievable with just a the foot break), the motor is at 12-13 psi within 1/3 sec and breaks the tires free. I can't seem to get the motor to launch at a lower boost because of how fast it spools. Its either it can launch at 1 psi or 5-6psi. I am going to try using a 2 step next season to try to launch at a lower boost and rpm to deal with my traction issues. Anyways, in short you can easily build a motor for less turbo lag.
High HP Supra's in general have a narrow power band and terrible lag. Its what happens when you put a big ass turbo on 3.0L motor. They often have poor drivability as street car; some of videos I have seen of fast Supra, they take a few seconds to even spool up on the highway. The highway should be one the places where the turbo take the least time to spool up. Poor drivability as a street car is what is driving this mod.
Our truck motors have relatively low rpm operation and with a relatively wide operating range. I am not saying their is not benefit to a mod like this, but its not going to drastically improve drivability. I don't think you will see better track times if the stall converter and turbo are properly sized for the motor. In some case it may be slightly slower on the top end, depending where the turbo in its efficiency range. (per the manufacturers statement about a 5% reduction in the A/R because of the restriction)
Even if our stock turbo was a twin scroll. Its still going to need to be brake torqued (it would be easier to do) for boosted launch (stress on transmission). The spacers is going to require that the DP be modified. The stock turbo isn't that far from its peak potential, so it would plate restriction would slightly reduce the peak HP potential as well.
If you want to reduce stress on the transmission from doing a boost launch, you can get a higher stall converter with 2 step.
My Syclone has a relatively small turbo (PTE61) for the motor. I have a moderate custom cam, good flowing vortec heads (both improve spool up), ball bearing turbo and moderate stall converter. I chose a turbo on the smaller side for street drivability. Anyways I have traction issues, it spools too fast as it is. If I launch at 5 psi (easily achievable with just a the foot break), the motor is at 12-13 psi within 1/3 sec and breaks the tires free. I can't seem to get the motor to launch at a lower boost because of how fast it spools. Its either it can launch at 1 psi or 5-6psi. I am going to try using a 2 step next season to try to launch at a lower boost and rpm to deal with my traction issues. Anyways, in short you can easily build a motor for less turbo lag.
Darin
New member
Re: Quick Spool Valve - interesting idea
I don't think there would be a problem. This flange is setup to get the turbo spooling, it will switch to normal operations before your wastegate is going to open.
I don't think there would be a problem. This flange is setup to get the turbo spooling, it will switch to normal operations before your wastegate is going to open.
BMFB
Not to scale
Re: Quick Spool Valve - interesting idea
For one of these I BELIEVE you need a
twin scroll turbo
not twin scroll manifold
Results of using one would be kinda goofy. They are typically used to get a huge turbo to spool by increasing the velocity of the air going through the turbo. This would be great if we had issues spooling on the line...but we usually dont.
You could try to have an entire setup built around this concept, so that you basically dont brake boost to get decent launches. Your trans temps would thank you, but thats about it. You'd still be putting the same stresses on the driveline through first, and the rest of the gear shifts. You would sacrifice your 60ft times and ultimently your 1/4 miles times because it just wouldnt be as quick.
This would also work for someone like me who uses a pretty huge turbo with a pretty tight converter. If I had a twin scroll turbo I would actually use of these, but unfortunetly I do not.
For one of these I BELIEVE you need a
twin scroll turbo
not twin scroll manifold
Results of using one would be kinda goofy. They are typically used to get a huge turbo to spool by increasing the velocity of the air going through the turbo. This would be great if we had issues spooling on the line...but we usually dont.
You could try to have an entire setup built around this concept, so that you basically dont brake boost to get decent launches. Your trans temps would thank you, but thats about it. You'd still be putting the same stresses on the driveline through first, and the rest of the gear shifts. You would sacrifice your 60ft times and ultimently your 1/4 miles times because it just wouldnt be as quick.
This would also work for someone like me who uses a pretty huge turbo with a pretty tight converter. If I had a twin scroll turbo I would actually use of these, but unfortunetly I do not.
Re: Quick Spool Valve - interesting idea
I don't believe you need a twin scroll turbo. This wouldn't work on car that came originally with a twin scroll as they have to use a divided manifold. That would then make this is only for retrofits, and since a twin scroll would be pointless without a specifically designed divided manifold, that would make the swap to a twin scroll Only to run this valve. Besides, they don't mention the need for a twin scroll, and if A retrofit to a twin scroll was needed I think they would.
I don't believe you need a twin scroll turbo. This wouldn't work on car that came originally with a twin scroll as they have to use a divided manifold. That would then make this is only for retrofits, and since a twin scroll would be pointless without a specifically designed divided manifold, that would make the swap to a twin scroll Only to run this valve. Besides, they don't mention the need for a twin scroll, and if A retrofit to a twin scroll was needed I think they would.
Quickstop [UK]
Combating adversyty.
Re: Quick Spool Valve - interesting idea
It would work better with a twin scroll but it will still work with a single. I think it is a neat idea. Not so great for stock trucks but for people with really big turbos that don't want to have a 3200 stall, this is great.
Wonder who will be the first to try it!
It would work better with a twin scroll but it will still work with a single. I think it is a neat idea. Not so great for stock trucks but for people with really big turbos that don't want to have a 3200 stall, this is great.
Wonder who will be the first to try it!
Re: Quick Spool Valve - interesting idea
OK, you spent the time to type twin scroll in red. Where does this say twin scroll is needed?
If this is designed for a twin scroll then it was only designed to work on cars that had been converted to a twin scroll specifically for this plate. It won't work on a stock twin scroll system and a twin scroll does nothing for a conversion unless you have a 180 degree divided manifold. Since you can't run a divided manifold with this setup that means you converted to a twin scroll specifically to run this plate.
OK, you spent the time to type twin scroll in red. Where does this say twin scroll is needed?
If this is designed for a twin scroll then it was only designed to work on cars that had been converted to a twin scroll specifically for this plate. It won't work on a stock twin scroll system and a twin scroll does nothing for a conversion unless you have a 180 degree divided manifold. Since you can't run a divided manifold with this setup that means you converted to a twin scroll specifically to run this plate.
Re: Quick Spool Valve - interesting idea
It says it right here on their website, 2nd paragraph below the youtube video:
"The Quick Spool Valve has a butterfly valve blocking a scroll of the divided turbo housing, making the turbo act as if it were a smaller turbo. All the exhaust energy is routed through half the turbine housing, causing the turbo to spool at a much more rapid rate. In other words, the spool valve is essentially "halving" the turbine A/R when the valve is closed, and then you get close to full A/R when it is opened."
On some turbos, especially Garrett, you can keep the same exhaust turbine and change the exhaust housing. So I have a Garrett GT3788R with an un-divided T3 inlet flange. If I wanted to, I could find another exhaust housing that will fit my turbine that has a divided inlet. Say I wanted to run this cutoff flange, Id simply get the divided exhaust housing, a T3 undivided spacer (some people on here have the spacer that has an external gate flange on it, which you'd have to use for this), the QSV and you'll be good to go after your downipe fits.
It says it right here on their website, 2nd paragraph below the youtube video:
"The Quick Spool Valve has a butterfly valve blocking a scroll of the divided turbo housing, making the turbo act as if it were a smaller turbo. All the exhaust energy is routed through half the turbine housing, causing the turbo to spool at a much more rapid rate. In other words, the spool valve is essentially "halving" the turbine A/R when the valve is closed, and then you get close to full A/R when it is opened."
On some turbos, especially Garrett, you can keep the same exhaust turbine and change the exhaust housing. So I have a Garrett GT3788R with an un-divided T3 inlet flange. If I wanted to, I could find another exhaust housing that will fit my turbine that has a divided inlet. Say I wanted to run this cutoff flange, Id simply get the divided exhaust housing, a T3 undivided spacer (some people on here have the spacer that has an external gate flange on it, which you'd have to use for this), the QSV and you'll be good to go after your downipe fits.
Darin
New member
Re: Quick Spool Valve - interesting idea
Damian, I actually entertained this device before talking to you regarding the GT37. ATP Turbo sells a divided T4 housing for thee GT37, but it's ~$400. Add the $600 for this, plus other small things, that's over 1K. Better money is spent on a properly sized converter, I feel.
Damian, I actually entertained this device before talking to you regarding the GT37. ATP Turbo sells a divided T4 housing for thee GT37, but it's ~$400. Add the $600 for this, plus other small things, that's over 1K. Better money is spent on a properly sized converter, I feel.
It's just a six
Super Member
Re: Quick Spool Valve - interesting idea
Mike Lee used to sell these units. I do not see them on his websites anymore. maybe I missed it?
Mike Lee used to sell these units. I do not see them on his websites anymore. maybe I missed it?
Re: Quick Spool Valve - interesting idea
It's not what you know, it's who you know. :tup:
It's not what you know, it's who you know. :tup:
Re: Quick Spool Valve - interesting idea
No worries. Before I boosted my Eclipse, I spent countless hours researching turbo info. My buddy finally got tired of my questions, told me to give him $400 and he will get me the parts to put together a good turbo for me. I'm by no means an expert, but I do have some knowledge of Garrett turbos and some others.
No worries. Before I boosted my Eclipse, I spent countless hours researching turbo info. My buddy finally got tired of my questions, told me to give him $400 and he will get me the parts to put together a good turbo for me. I'm by no means an expert, but I do have some knowledge of Garrett turbos and some others.
Darin
New member
Re: Quick Spool Valve - interesting idea
http://compturbo.com/spotlights/diverter-valve
This is a much better idea. Can be used on both divided and open manifolds. Directs the gases into one volute of the twin scroll, not just make it "hit a wall". My only question is longevity of the pivot points, exhaust gases are nasty, I hope they use top quality materials. Your typical 304SS or mild steel isn't gonna cut it here for the material of the shaft.
http://compturbo.com/spotlights/diverter-valve
This is a much better idea. Can be used on both divided and open manifolds. Directs the gases into one volute of the twin scroll, not just make it "hit a wall". My only question is longevity of the pivot points, exhaust gases are nasty, I hope they use top quality materials. Your typical 304SS or mild steel isn't gonna cut it here for the material of the shaft.