Re: 1950 Packard 288 Auto overheating HELP

Posted by Donald Booth On 2014/9/12 22:54:10

Thanks for the response.

Is there a simple explanation why the engine runs hotter when the timing is off?

Just so I am clear, changing the timing from 4 deg BTDC to 6 deg BTDC would be advancing the timing? And Sam found that 12 deg BTDC worked best for his car?

...has the radiator and block been treated and back-flushed with a chemical cooling system cleaner like oxalic acid?

No

Have you had the radiator tested for flow-rate? Perhaps it's time to consider a radiator test and possible recore.

Radiator was recently recored.

Water distribution tube been checked?

Scoped it when I recently replaced water pump. Looked very clean and in very good shape.

Undersize tail pipe or muffler?

Recently replaced entire exhaust system with stock system.

Incorrect fan belt fit in the water pump pulley?

Recently replaced with Gates 26501 (is that an appropriate replacement part?). Seems to fit well (flush with top edge of pulley and is not riding on bottom of pulley).

What's the distance between the fan blades and the radiator core?

1.25"

Thanks again.