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Tech Question
chris, Algona , IA , 1965 Plymouth fury 318
How do you set valves on the 318 poly?
318 Polysphere Lash specs are 0.013 Intake, 0.021" exhaust, hot.
All you need are a pair of new valve cover gaskets and a feeler gauge set. And about an hour.
I found a good treatise, a step-by-step procedure, at http://tinyurl.com/valvelash , which, incidentally, was not explained in the FSM -- 'back in the day', every mechanic learned this on his first tune -up! This web page is for a Chevy, but Mopar's firing order is the same, the only difference is the adjusting screw at the rocker tip vs. a center-pivot locknut on the Chevy, but this has almost zero affect on the actual procedure.
There's also a real "shadetree" variation to this procedure, which works OK with stock (read: mild) cams. Simply hook up a starter bump switch under the hood (or use the old screwdriver between the two uninsulated starter relay terminals trick). Do one side of the engine at a time. Start with the front valve on the front cylinder. Bump the starter just until you see the rocker stop moving, then one more quick bump. Adjust that valve's lash, then repeat the procedure with the other 7 on that side. Replace the cover, re-warm the engine, then repeat the whole deal on the opposite side.
I tried to find a video of this on Youtube, but they were all garbage. One actually showed a poor Mopar slob adjusting the lash with the engine running!
Rick
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