RE: [Chrysler300] 375 Troubled Horses / Over Heating 300C

["John L. Chesnutt" <chesnutt@xxxxxxxxxxxx>]

My300C has never over heated and does not kick out coolant. Several times over the last 53 years I have driven it over several 11,000 foot passes, Beartooth Pass, 10,947 Ft on the NE entrance to Yellowstone Park and Red Mountain Pass, 11,120 Ft near Silverton, Colorado. I use a 14 pound radiator cap the same as George. I have had 10 1/2 compression ratio since July 1970. I always drove the 300C fast and hard over mountain passes. It performed well for me. I do not have air conditioning.

John Chesnutt

-----Original Message-----
From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On Behalf Of George McKovich
Sent: Tuesday, August 16, 2011 8:02 PM
To: Henry Schleimer
Cc: Rich Barber; Bill Huff; christopher beilby; kboonstra300; <lorencnelson@xxxxxxxxxxx>; <chrysler300@xxxxxxxxxxxxxxx>
Subject: Re: [Chrysler300] 375 Troubled Horses

My 300C coupe has never overheated but it will always kick out about 3/4 to one inch of coolant after it has been filled to the top. That usually happens the first or second time it is run for a while at normal operating temps. I do not re-add the different and just drive it without it throwing any more out and without overheating even a 100+ degree days and also at altitudes up to 9,000 feet above sea level. I have always figured that is just one if the quirks with the hemis. I have aftermarket a/c running an RV2 compressor, 6 blade fan, non-thermal clutch and a 14 pound cap. 

George 

Sent from my iPhone 4


On Aug 16, 2011, at 7:34 PM, "Henry Schleimer" <henry.schleimer@xxxxxxxxxxxxxxx> wrote:

> Rich is right in that a full radiator will always expel water, especially
> when shutting down. Top up if the core is showing but otherwise leave room
> for the water to expand.
> 
> Henry Schleimer
> 
> From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On
> Behalf Of Rich Barber
> Sent: Wednesday, 17 August 2011 10:23 AM
> To: 'Bill Huff'; 'christopher beilby'; 'kboonstra300';
> lorencnelson@xxxxxxxxxxx
> Cc: chrysler300@xxxxxxxxxxxxxxx
> Subject: RE: [Chrysler300] 375 Troubled Horses
> 
> Keep in mind that without a properly-functioning overflow container that is
> designed to hold the heated and expanded coolant and then return it to the
> radiator as it cools, the radiator will have to puke out any excess volume
> from heating and never recover it. So, when cold, the coolant in the
> radiator tank will appear to be down an inch or more. Topping off at this
> point will result in more volume overflow next time it gets hot. 
> 
> You can bet there is some boiling going on at the hottest points of the
> water jackets and heads until the boiling action and natural coolant flow
> due to temperature variations in the system cools the iron down. The high
> temperatures also causes some breakdown of the glycol coolant. That's where
> some of the black crud in the overflow bottle comes from and is one reason
> to periodically drain, flush and refill the system with fresh coolant-water
> mix.
> 
> Rich Barber
> 
> From: Chrysler300@xxxxxxxxxxxxxxx <mailto:Chrysler300%40yahoogroups.com>
> [mailto:Chrysler300@xxxxxxxxxxxxxxx <mailto:Chrysler300%40yahoogroups.com> ]
> On
> Behalf Of Bill Huff
> Sent: Tuesday, August 16, 2011 4:26 PM
> To: christopher beilby; kboonstra300; lorencnelson@xxxxxxxxxxx
> <mailto:lorencnelson%40comcast.net> 
> Cc: chrysler300@xxxxxxxxxxxxxxx <mailto:chrysler300%40yahoogroups.com> 
> Subject: RE: [Chrysler300] 375 Troubled Horses
> 
> If the system lost pressure due to a leak or bad cap, it would lose 
> it both after a run down the road as well as after idling. Doesn't 
> sound the solution to me. Also, if it was a leak, it wouldn't come 
> out the overflow tube.
> 
> Bill Huff
> 
> >1) Someone else has already suggested what it sounds like - namely 
> >that the system has lost pressure after turning off - and with no 
> >pressure, it boils due to masses of heat coming out of large volume 
> >of hot cast iron etc !!?
> >
> 
> [Non-text portions of this message have been removed]
> 
> [Non-text portions of this message have been removed]
> 
> 


[Non-text portions of this message have been removed]



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