Hi guys.

I was wondering how you can tell if your valves are floating. Is it something that you can detect on the dyno by looking at the power curve? Is there damage to the valvetrain that you can look for? (Assume that the float is slight enough that your engine doesn't blow up.)

 

It'll feel like you hit the rev limiter.

 

basically it feels like the engine isnt making any more power, and it makes a funny noise, Exhaust gasses start pumping back into your intake, Not really harmful but excessive float can cause damage.

 

If the valves have floated, the springs are fatiuged (sp?) and should be replaced. They will loose tension and float at lower and lower rpm's.

 

I think you put them in the water and if they drop to the bottom, they didnt float. Try it in the sink first.

 

With a post count of 8....It almost seems like your being serious.

 

Haaahhhaaa, that's what I was thinking. LOL!!!

Hey top notch, you got to be kidding. if you were serious.

 

If you are floating them, you will be bending them very soon and you will wind up with zero compression.

 

Valve float can be less noticable than feeling like you hit the rev limiter. In my experience, especially with over revving rental cars at every opportunity, it feels like the motor no longer wants to pull at the high rpms. The drop off in power will be noticable.

Also, it doesn't necessarily mean your springs are worn out. If you run a cam that is too big for the springs to keep up, the valves will float. Also, in extreem cases where there is a ton of carbo buildup on the valves, the extra wieght will cause high rpm float.

 

Does it have to be a sink ? I tried them in a bathtub and they went to the bottom.