Earlie A's latest activity

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    Earlie A replied to the thread Valvetrain Geometry.
    If I remember correctly @Newbomb Turk said there was a change in the bushing. Perhaps the old style had a split bushing (two halves)...
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    Earlie A reacted to Woody500's post in the thread Valvetrain Geometry with
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    Any non-rotating needle bearings are bound to fail, due to back & forth motion & concentrated pressure. Rotating needles last a lot...
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    Earlie A reacted to 92b's post in the thread Valvetrain Geometry with
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    This graph and chart is interesting when thinking about the forces in play, when they occur, where they come from and how they are...
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    Earlie A replied to the thread Valvetrain Geometry.
    Good stuff. Thanks. It's amazing what forces and loads are present in a screaming engine.
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    Earlie A reacted to Newbomb Turk's post in the thread Valvetrain Geometry with
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    Yes. All rockers have some deflection which is why the actual unloaded ratio is higher than the nominal ratio. Or at least it should be...
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    Earlie A replied to the thread Valvetrain Geometry.
    Some of the losses are shown in the two drawings. 0.430” of cam lift results in 0.415” or 0.419” at the other end of the pushrod.
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    Earlie A replied to the thread Valvetrain Geometry.
    I’m not sure I understand the reference to 45 degrees. 48 degrees is perfection for the SBM lifter angle. Factory stuff was 59...
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    Earlie A replied to the thread Valvetrain Geometry.
    How much have you seen springs change the RR? Is it mostly rocker deflection?
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    Earlie A replied to the thread Valvetrain Geometry.
    Sinking the adjuster into the rocker body increases the rocker ratio. Extending the adjuster toward the lifter decreases the ratio...
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    Earlie A replied to the thread Valvetrain Geometry.
    I think that's just a generic description. I can't see any bearings in the roller tip.
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    Earlie A replied to the thread Valvetrain Geometry.
    https://www.prwpower.com/prw-mopar-elite-series-shaft-rocker-system-3231812/p3120 I seriously doubt the roller tip is bushed.
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    Earlie A reacted to Killer6's post in the thread Valvetrain Geometry with
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    Lol, next You get to find & try a W2 setup,...non-linear in 2 planes by quite a bit ...
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    Earlie A replied to the thread Valvetrain Geometry.
    Here's the pic.
    • IMG_3810.jpg
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    Earlie A replied to the thread Valvetrain Geometry.
    I don't see how the SBM runs as well as it does with that misalignment, especially at high RPM. R blocks and Ritter blocks have the...
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    Earlie A replied to the thread Valvetrain Geometry.
    PRW rockers were purchased in 2025. Changing to real springs would be a challenge and a totally different set-up. It would be tough to...
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