How to Detect Valve Train Instability
#31
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Spintron testing is a good value compared to a broken valve train. When you are running at + 4000 RPM you can't hear much and and the odds are you will do signicant damage if something in the valve train fails. If you use solid lifters, a good indicator is you have to adjust the valves. When the valve train is stable, nothing moves.
#32
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#33
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Raylar parts in the engine are the intake and stroker kit only. In my mind a fully engineered Raylar engine upgrade package would be one of the safest routes since it is just that...fully engineered and proven and you know what power you will get. Knowing what I know now if I had to do it over again that is the route I would take as a do it yourselfer. It would have saved me a lot of $$$ as well.
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#35
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Raylar parts in the engine are the intake and stroker kit only. In my mind a fully engineered Raylar engine upgrade package would be one of the safest routes since it is just that...fully engineered and proven and you know what power you will get. Knowing what I know now if I had to do it over again that is the route I would take as a do it yourselfer. It would have saved me a lot of $$$ as well.
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#38
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Take the rocker arms off and look at the top of the valve to look for cross marks which is an indication of valve float and/or instability in the spring setup. Also check rocker arm wheels for flat spots or erosion which is usually an indication of side load. These are just a few simple things to check while it's together.
I am afraid to ask for comments.
#39
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sounds like the valves are rotating. don't know if a bad thing or not. they used to design them to rotate. heck, they still do, but not at real spring pressures and lifts.
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Not concerned about rotation by itself assuming it is not the signature of something more insidious (damaging) going on. I guess a different question would be is valve rotation normal with the PAC beehive spring and retainer system?