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Original Message
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Also...Info on jiggle pins and flutter valves. |
By Dave Shoe - 12/13/2003 4:48:03 PM; IP 216.243.176.34 |
The "jiggle pin" which was changed to a "flutter valve" design in later FEs) is available on many hydraulic liftered FEs, but I don't find that they are needed when combined with modern cam bearings which have a metered squirt slot machined into the cam bearing which applies oil to the timing gear.
I believe their main purpose was to quickly rid the topoil galley of air upon startup, to assure all lifters got oil, instead of air pumped to them at startup.
I've been trying to figure these suckers out for a while now, and have tentatively determined thay are not really needed on FEs, but might be a luxury item to keep a few cold lifters from clattering at start-up.
JMO, Shoe. |
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