RE: [Chrysler300] 300F Water Pump

[christopher beilby <thelastbestgenius@xxxxxxxxxxx>]

No one else said anything yet, so It might be total wrong, as it does not make sense even to me, but if it a new/rebuilt orig 60s motor, could it be post rebuild, you have now suddenly dislodged a heap of sludge/rust from the lower block areas that has broken away while motor out/dry, and this has blocked the flow somewhere - or else something non rust/sludge, like the thermostat is jammed shut?!
 
Whatever the cause, it sounds like the pump is being overloaded, like the impellor is being 'turned off' by backed up/solid water?!!

 
Check thermo and then also top of radiator tank to see all little flow holes, tops of tubes, are clear, as start points.
 
Christopher in Australia - cool weather still amazing/weird for this time of late spring, locusts slowed/stalled by the cold nights, so southern winter grain crops still going great so far and harvest just anout to start abd run through to near xmas in some slower/cooler areas
 
 


To: chrysler300@xxxxxxxxxxxxxxx
From: tdcox@xxxxxxxxxxxxx
Date: Tue, 9 Nov 2010 10:51:05 -0800
Subject: [Chrysler300] 300F Water Pump


  



I traveled to the Chicago meet in my F convert, during which I threw at least 
two water pump belts. Upon arriving in Chicago, several guys that know a lot 
more than I do about the F engine noticed that the fan pulley was not lined up 
with the crank pulley. All suggested shimming out the fan  pulley which we did 
by about 3/16?. I drove home and all seemed well; no belts thrown and car ran 
fine.
 
After arriving home, the engine was properly broken in and I began to increase 
the speeds I drove. Shortly thereafter, the water pump failed as I slowed down 
from about 4,000 rpms. I did have another water pump in the trunk and I replaced 
it. 

 
Within 50 miles, that water pump failed while driving about 60 mph on the 
interstate, taking out the radiator. 

 
So, I bought a NAPA replacement water pump, replaced the water pump with failed 
bearings, had the radiator repaired and installed, cranked it up and it idled 
nicely for about 30 minutes, at which time I shut it down. Upon start-up, the 
new NAPA water pump failed.
 
I am at a loss at what to do. The belts are not too tight. My only thought is 
that shimming out the water pump may have put too much stress on the water pump 
with a fairly heavy fan/clutch assembly. Any other suggestions?? I can?t afford 
another radiator rebuild and I am afraid to drive the car any distance. I can?t 
understand why I could drive the car nearly 1,000 miles with the shimmed out 
pulley, yet I can?t keep a water pump operating without the bearings failing. 
Help!!!

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