Quick spool valve + 30% Power??

[StuartW]

Just looking for a T6 Manifold for the Drag supra and came across this...Specific to the 2JZ.

 

Has anyone played with one of these..If what Suprastore say is correct surely all the Singles should have one??

 

[JamieP]

Im pretty sure they dont make a T6 one, EDIT... seems they do make a T6 QSV now.

 

http://www.spracingonline.com/projects/

 

You need a open manifold and divided turbo for them to work.

Edited November 22, 2010 by JamieP (see edit history)

[DARETT]

Some good info on the QSV and the manifolds needed for it to work here:

 

http://www.supraforums.com/forum/showthread.php?t=607365&highlight=QSV+Quick+spool

[StuartW]

$499 on special! Not bad, Also it uses a Boost solenoid type MAC valve

 

http://www.spracingonline.com/images/products/36431.jpg

 

If funds suffice i will experiment with this...BUT ultimately for my goals with the Drag Project NOS is Going to be superior, I have to have it on board for the Extra power on the run so might as well use a shot to spool up quicker.

 

Anyone else going to invest...Jamie?

[mellonman]

:think:can someone please explain the physcis behind this, i have not a clue how that works?

i thought that getting the exhaust gas out quicker would spool faster not closing it off!

[CanisLupus]

I think the second gate is closed in lower RPM Regions so the exhaust gas is quicker through the open Port. Then with more RPM the gate opens and both Ports are open with enough gas to keep the Turbo spooling. Correct me if I'm wrong

[StuartW]

:think:can someone please explain the physcis behind this, i have not a clue how that works?

i thought that getting the exhaust gas out quicker would spool faster not closing it off!

 

It would spool faster if the Outlet (After exhaust turbine) was bigger.

 

The theory is that as long as the Chamber is not totally maxed out on flow already (Which it wouldn't be at Spool revs) It speeds up the exhaust gasses flow to make the turbo's Turbine spin faster.

When the Turbo has a divided Exhaust housing it affectively has 2 oblong ports for the gasses to enter. Because the Rear Opening forces the gasses onto the larger veins of the Impeller it affectively has more Ability to push it around harder. Imagine the Impeller like a adjustable gear wheel..The smaller it is the harder is is to move it, The bigger the easier...simple physics...Leverage! But it gets to a point where once spun up the smaller parts of the impeller blades can take over to affectively "Gear up" the impeller, making it spin even faster whilst allowing full flow.

 

Newer Turbo technology have Variable Vein Turbo's which is affectively what this creates. my Daily Driver 2001 Audi 2.5TDI Allroad uses a Variable vein turbo and is on full boost which equals Torque (Real power) @1.2Bar and 1400rpm.

[Nic]

That valve is going to have to withstand a lot of heat.

 

[Matt H]

:think:can someone please explain the physcis behind this, i have not a clue how that works?

i thought that getting the exhaust gas out quicker would spool faster not closing it off!

 

It's like sticking your thumb over the end of a hose pipe, same amount of water coming out, just under high pressure. This principle would spool the turbo faster. Then when more exhaust gas comes out of the engine at higher RPMs, the valve opens up.

[mellonman]

When the Turbo has a divided Exhaust housing it affectively has 2 oblong ports for the gasses to enter. Because the Rear Opening forces the gasses onto the larger veins of the Impeller it affectively has more Ability to push it around harder. Imagine the Impeller like a adjustable gear wheel..The smaller it is the harder is is to move it, The bigger the easier...simple physics...Leverage! But it gets to a point where once spun up the smaller parts of the impeller blades can take over to affectively "Gear up" the impeller, making it spin even faster whilst allowing full flow.

 

well explained