Twin scroll turbo idea?

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Found this part for running a twin scroll turbo. Would this and a well built ex. man. to a bigger holset or schwitzer turbo make any boost sooner?
http://www.spracingonline.com/store/Sound_Performance_Quick_Spool_Valve/3643.

[burn_your_money]

Interesting.

You could test the theory behind it by installing a thin spacer that reduces the exit on the turbo and see if it spools up any faster.

[RabbitJockey]

i've seen these before i think they were  on a mustang or something.  they must work

[TurboJ]

Yeah, they work quite well if done right. Pretty usual trick on Finnish TDI's and some IDIs too.
As for me, I'm trying to find the best flowing turbo possible, without needing such a valve just yet. Optimizing, optimizing...

[RabbitJockey]

http://www.ls1tech.com/forums/forced-induction/1077263-zombies-quick-spool-valve-testing-pics-nerd-like-graphs-2.html


heres a bunch of ls1 guys arguing about it, looks the guys that used it love it.  i still wonder if it would make a holset usable at all.

[Rabbit on Roids]

but if you have a pulsed manifold, that thing screws you over, because in theory, 1&4 go to one side, and 2&3 go to the other side of the flange. so that would close down exhaust from one set of cylinders if used with a pulsed manifold. and besides, that thing is way too expensive. its a valve for christs sake, not rocket science. not worth 500 bucks IMHO.

[RabbitJockey]

its made for use on a single scroll manifold with a dual scroll turbo.  i agree the price is crazy,  they probably make those for less than 50 dollars including labor.  a guy on the link i posted made one by drilling a hole through the dual scroll manifold and putting an old exhaust valve through it then welding his own butter fly to it.

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Um, $500 is way to much    for a valve like you said. Sure are nice looking  . Anyone know of any other kinds?

[Vanagoner]

I have a turbo off of an early 80's Volvo 6 cyl (VW LT) TD (non-intercooled) Garrett TB03 I think.
It is a twin-scroll casting (marked H4).  Early, crude, but a true twin scroll and it would fit, sort of.  Would have to radically re- map it and chop the ends off the manifold to make it a 4.  The way it is set up is 1-2-3 go to one side and 4-5-6 go to the other.  It's in storage or I'd take pictures (If I had a working camera...)

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Please get a camera, please get a camera. 

[truckinwagen]

I have my eye on a Holset H1C with a split housing, but I think I will rely on the supercharger to help spool it, I am not a big fan of things pre-turbo that might break and send shards into the turbine.

[Vanagoner]

Please get a camera, please get a camera. 

Ok, my son has a camera, and he'll be here on the weekend.

[foxracer1]

I think with a HX or similar you might run it to surge probs down low. It would take some trial and error. But yes it cost way to much. Sad thing is people will and have paid that much.

[RabbitJockey]

alot of the holset have built in surge protection.  when dave made his 190whp jetta he had to drill the surge holes in his t04e housing due to this problem.  twinscroll valve is probably a good way to throw a rod

[RabbitJockey]

http://performancemetalwerkz.webs.com/apps/webstore/

there now somebody try it haha