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had someone put their valve with doble springs one inside of the other? my friend done is on his jetta and gain about 15-20 HP. he told me that the valve will have more presure going down.

 
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False. You will not gain any power by adding stiffer valvesprings. In fact, you will LOSE power, as the increased drag on the valvetrain.

 
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can i do something on the valves to gain hp?

 
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get a new cam, and change they valve springs that will give 5-8 hp.

 
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were can i guet the springs and the cam?

 
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no aftermarket cam out for our car yet.

you have to get your OEM one re-grind, you can send it out to crower and theyll do it for you.
go to there website http://www.crower.com/. you can get valve springs there as well.

 
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Stiffer valve springs /= hp. They are more drag on the motor and as such less power.

 
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All the springs do is keep the valve tracking with the cam. Lighter springs take less energy to compress, but float more easily. Stouter springs can wipe a cam lobe.

The advantage to the dual springs your bud got are that they typically last longer than single springs, especially in racing applications. Lots of folks buy single springs with a dampner and think they have dual springs. Most dual springs will have two springs plus a dampner.

 
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unless you change or re-grind your cam.

 
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No, a stiffer valve spring will always=less power, unless the spring is to light to be able to control the valve motion.

 
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My friend told me that the engine can handle 2 and 1/2 spring strenth before it does damage to the cam .he recomended me to put 1 and 1/2 spring *(one inside the other)* on the valve. do you guys think this will work on my vic? he told me that it would go down a lil more faster and that the engine and cam can handle a valve spring that is a little more stiffer. it makes kinda sence.

 
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Sure, the cam can handle it, but it's not going to change the fact that it's going to take more to open the valve. It's a closed system, you either open easier/close slower or open harder/close faster. The bottom line = 0 difference, and a lot of wasted effort if you go through with it. Of course, they may be benefits on a motor built for something other than great gas mileage and reliability, but you definitely won't realize those on your D17.

 
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Are you english or retarded? Please use correct grammer when you type, as it is EXTREMLY difficult to understand what you are talking about.


And no, valve springs have nothing to do with how much or how fast a valve opens.

 
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By stiffening your valve springs, you could safely raise your redline as now the valves have enough closing power to operate at a higher RPM.

However if you simply install stiffer valve springs and call it a day, then yes you will lose a small amount of power

 
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Raising the redline only works if the motor will make power up that high. The way ours is designed, it seems to start losing power at about 6500+ based on dyno charts.

 
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The reason why its loosing power is because the stock motor isn't designed to make a great deal of power beyond 6500. Put in a more aggressive cam, and some headwork done, and free up the exhaust and intake and chances are the power will continue to increase past 6500 rpm. However doing the following mods would more that likely kill your low end power.