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New valve springs to get rid of floating valves in high rpm range?

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New valve springs to get rid of floating valves in high rpm range?

Old 09-30-2007, 08:45 PM
  #1  
kcp1989
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Default New valve springs to get rid of floating valves in high rpm range?

I am sick and tired of running out of power at about 5200rpm and was wondering if I could get some stiffer springs to the valves from floating.
Will this even fix my problem? and will it effect the driveability, low end power?
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Old 09-30-2007, 09:46 PM
  #2  
Mark99GT
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Default RE: New valve springs to get rid of floating valves in high rpm range?

On a stock motor? The stock intake and cam profilearen't going to offer much more power beyond 5800 rpm. It would be a waste of money/timenot to install cams while you're in there.

I don't know what the limits of the stock rotating assembly are, but im sure its not much more than 5800 rpm. Not to mention the harmonic damper and oil pump gears aren't designed to spin much higher than the 5800 rpm either.Im willing to bet that thestock rotating assemblies arent precison balanced by Ford.

So...no, on an otherwisestock motor it would be pointless IMO.
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Old 10-03-2007, 02:16 AM
  #3  
Ehmark
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Default RE: New valve springs to get rid of floating valves in high rpm range?

It should with a port and polish + cams.
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Old 10-03-2007, 09:33 AM
  #4  
Chopper
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Default RE: New valve springs to get rid of floating valves in high rpm range?

What year and model of car are we looking at here????
How many miles?
Mods?
Maybe the engine in the car was designed to fall on it's face at 5,200 rpm.
Maybe there's something else wrong.
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Old 10-03-2007, 10:58 AM
  #5  
MrChubs1
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Default RE: New valve springs to get rid of floating valves in high rpm range?

Are you really floatingthe valves? They usually won't float until at least 6500.= unless your springs are really worn out.

New springs (better springs) are the way to prevent float, but I doubt that's what's happening to you. Stiffer springs will actually eat a little power since it'll take more force to compress them. Don't upgrade unless you're sure you need them. With a factory cam you should be fine for many miles. If you're pushing lots of lift, you'll require more sping rate.
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