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Tech Question
mark christian, ipswich, australia, 1976 chrysler aussie charger 440
Hi, my 440 had a stuck thermostat when I first fired it up.
It got very hot before I realized what was going on. It runs fine but has a
sort of squeaking and light knocking noise under acceleration and idle which
sounds like it is coming from no.4 or no.6 The noise doesn't seem to be
getting any worse but I am a bit concerned that something is going to let
go. Oil pressure is great and temp is fine and all cylinders have great
compression.
Mark-
Most likely you scuffed a piston skirt and the cylinder wall. It's also possible that one or more bearings could be scored, although that usually only happens when an engine has be hammered on while overheating. It's also possible, but less likely, that a vlave got semi-stuck in a guide and bent a pushrod.
You really have two choices: Either rip it apart - the damage will most likely be visible, or just drive it and see what transpires. Since I doubt that 440s grow on trees down under, I think the first option would be most prudent.
Rick
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