Re: {Chrysler 300} Temperature

["D.C. Mason" <petergriffinforpresident@xxxxxxxxx>]

Thanks guys,

Sounds like the engines are fine at the temps I’m seeing (so far).   I wondered, with the 62 especially, because the previous owner installed a newer wider/thinner radiator (like the kind you’d see on a circa 1970 mopar) and there is too much clearance between the radiator and the fan blades (non a/c).  So at idle it’s not pulling air through as efficiently as it maybe should.  I may put in a thicker fan spacer to close the gap temporarily.  Eventually will find an original radiator, but in the meantime this is working.  I use 180 degree thermostats, and normally drill a 1/8” hole in them.  

V/r,

dave & Kya

Sent from my iPhone

On Apr 15, 2022, at 9:17 PM, dplotkin@xxxxxxxxxxxxxxxxxxx wrote:



You describe what are perhaps the maximum range of normal. Our cars should run between 180-190 and as high as 220 in the heat using an air conditioner. 

 

I have 9 and none see 220/230 or 240/250 degrees, ever. However I agree it is likely considered normal in the shop and owners manual. Temps like those would have me looking for an obstructed radiator or poor air flow/fan/shroud fitment. 

 

Just an opinion based on experience.

 

Dan

-----Original Message-----
From: "kmaniak via Chrysler 300 Club International" <chrysler-300-club-international@xxxxxxxxxxxxxxxx>
Sent: Friday, April 15, 2022 7:27pm
To: "petergriffinforpresident@xxxxxxxxx" <petergriffinforpresident@xxxxxxxxx>, "chrysler-300-club-international@xxxxxxxxxxxxxxxx" <chrysler-300-club-international@xxxxxxxxxxxxxxxx>
Subject: Re: {Chrysler 300} Temperature

Cooling system 101 - Our cars were originally equipped with 180 degree thermostats.  This means that the thermostat will begin to open and circulate engine coolant at 180 degrees.  Actual operating temperature will go higher.  According to the service manual, non A/C cars were equipped with 14 pound radiator caps and A/C cars were equipped with 16 pound radiator caps.  Pressurizing the cooling system raises the boiling temperature of the coolant.  A 14 pound cap raises the boiling point to 238 degrees.  A 16 pound cap raises the boiling point to 260 degrees.  Given the cap pressures selected by the factory, they anticipated non A/C cars to run 220-230 degrees with normal driving.  They anticipated A/C cars would run 240-250 degrees.  These coolant temperatures should be considered normal and will not have a detrimental effect on the engine.

Chris the K MANIAC

-----Original Message-----
From: D.C. Mason <petergriffinforpresident@xxxxxxxxx>
To: chrysler-300-club-international@xxxxxxxxxxxxxxxx
Sent: Thu, Apr 14, 2022 7:37 pm
Subject: {Chrysler 300} Temperature

Hello group,

Interrogative for those who can answer-

What is the max temp on a hot day our engines should get to?  I am imagining aiming an infrared temp sensor at the thermostat housing.  For both our 62 (383) and 64 (361), I will see up to about 208 degrees F.  Guessing that’s approaching the limit…

Thanks,

dave & Kya

Sent from my iPhone

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