Quick Spool Valve ?

[macspring]

Reading threads on Motorgeek, and the above item was mentioned.

Just wondering what it is, and is it any good to use ?

Thanks either way.

[Jamo]

I looked at them and there is a few threads about them here, for the price your better getting the correct sized turbo in the 1st place.

[macspring]

Hi Jamo,

Hope your B5 is not causing you too much grief ?

Thanks for your rely, are they called by a different name on this side of the pond ?

[Jamo]

No that was one of the thing I could only see them in the US http://www.suprastore.com/spquspva.html

With shipping and which ever valve you bought you looking near enough $800 and then custom charges on top.

[andy10v]

Used on dual scroll turbos to decrease spool time (by closing the valve) (so all flow goes through one scroll), then open for full flow.

Dual scroll turbos/manifolds are normally used on even cylinder engines, eg 6 cyl with three cylinders feeding each scroll.

Pictures make it simple;

Quick spool valve



Dual scroll turbo

[macspring]

Thanks guys for info. Not for me, but maybe for others.

But at least I now know what it is all about.

Thanks again for taking the time.

[andy10v]

An S6 with a stroker and a quick spool valve fitted if you fancy a read

https://www.theprojectpad.com/viewtopic.php?f=11&t=99

[Jamo]

Yeah the original thread is on motorgeeks, I spent a lot of time talking to them about the setup

[Thuppu]

I looked at them and there is a few threads about them here, for the price your better getting the correct sized turbo in the 1st place.

The reason for a valve like these, is to spool up a big high hp turbo earlier than it would normally. If you aim for 1000hp you can't get it with a early spooling 400hp turbo, so you neet a big *** turbo for that. And with a valve you can get the spooling little better than without it. So I would say that it isn't a wong size turbo matter.

[Jamo]

If you are running a 1000bhp you don't care about spool because you'd be a drag car constantly high up in the rev range. These things do not help EGT's also

As said I've spoken with a few people who have run these and there are pro's and cons

[Thuppu]

So you don't use it for better spoolup?