383 Update

[Jay <shelby_nut@xxxxxxxxx>]

 

Just an update on my 383 that had no compression on cylinder 7 with the rocker shaft installed, but did with it removed.

 

After removing, disassembing, inspecting, and reinstalling the lifters had no effect after they pumped back up, decided with another course of action.

 

I fabricated some shims today (knew I'd find a use for that old ductwork sooner or later :), installed them, torque the rocker shaft to spec's, did a compression test, 150PSI.  More than any of the other cylinders had, so I'll be checking the rest on that bank tomorrow out of curiosity. I suspect the head was milled at one time, maybe twice, and the valve just weren't closing all the way, particularly on cylinder 7 (that appears to have an intake valve whose stem is a little taller than the rest.

 

No ticky ticky, smoooothest idle it's every had, goes waay better. I can do a burnout now! Woohoo! 

 

It will be interesting to see if the compression has come up on the rest of the cylinders, if so, I'll be shimming the other side PDQ!

 

Jay

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