I have a simple question, just don't know the answer.

NoSlow5.0 · 11-11-2001, 04:27 PM

I feel like a goon asking this, but what is valve float and what are the symptoms? I am trying to diagnose something on Marbles and want to be sure i have all of the info i need. Thanks.

Light Em Up!!!

Mr 5 0 · 11-11-2001, 04:37 PM

Here's the tech book answer:

Valve Float A high-rpm engine condition in which the valve lifters lose contact with the cam lobes because the valve springs are not strong enough to overcome the momentum of the various valvetrain components. The onset of valve float prevents higher-rpm operation. Extended periods of valve float will damage the valvetrain.

The simple answer is that your valve springs probably need to be replaced.

NoSlow5.0 · 11-11-2001, 05:09 PM

Thank you. What does it sound like? Or feal like? I think that is what is going on, just not sure. Jonathan

PKRWUD · 11-11-2001, 08:26 PM

Your power band stops shorter than it should. Basically, if you know your combination should pull past 6000rpms, but it just stops pulling around 5000rpms, and you have stock springs, it's valve float.

Take care,
-Chris

NoSlow5.0 · 11-12-2001, 11:32 AM

Thank you! Light Em Up!!!

11-11-2001, 04:27 PM	#1
NoSlow5.0 YOU HAVE NO MARBLES!!!!!! Join Date: Aug 2000 Location: Jonesboro,Georgia,USA (Providence, Ri) Posts: 868	I have a simple question, just don't know the answer. I feel like a goon asking this, but what is valve float and what are the symptoms? I am trying to diagnose something on Marbles and want to be sure i have all of the info i need. Thanks. Light Em Up!!! __________________ My 87 GT....Marbles....The one and only O.G.!!! AIM: Marbles87Fox Light Em Up!!!

11-11-2001, 05:09 PM	#3
NoSlow5.0 YOU HAVE NO MARBLES!!!!!! Join Date: Aug 2000 Location: Jonesboro,Georgia,USA (Providence, Ri) Posts: 868	Thank you. What does it sound like? Or feal like? I think that is what is going on, just not sure. Jonathan __________________ My 87 GT....Marbles....The one and only O.G.!!! AIM: Marbles87Fox Light Em Up!!!

11-11-2001, 08:26 PM	#4
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	Your power band stops shorter than it should. Basically, if you know your combination should pull past 6000rpms, but it just stops pulling around 5000rpms, and you have stock springs, it's valve float. Take care, -Chris __________________ Webmaster: Rice Haters Club Jim Porter Racing Peckerwoods Pit Stop Support Your Local RED & WHITE!

11-12-2001, 11:32 AM	#5
NoSlow5.0 YOU HAVE NO MARBLES!!!!!! Join Date: Aug 2000 Location: Jonesboro,Georgia,USA (Providence, Ri) Posts: 868	Thank you! Light Em Up!!! __________________ My 87 GT....Marbles....The one and only O.G.!!! AIM: Marbles87Fox Light Em Up!!!

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11-11-2001, 04:37 PM	#2
Mr 5 0 Conservative Individualist Join Date: May 1997 Location: Wherever I need to be Posts: 7,487	Here's the tech book answer: Valve Float A high-rpm engine condition in which the valve lifters lose contact with the cam lobes because the valve springs are not strong enough to overcome the momentum of the various valvetrain components. The onset of valve float prevents higher-rpm operation. Extended periods of valve float will damage the valvetrain. The simple answer is that your valve springs probably need to be replaced.