Re: [FWDLK] Radiator caps

[Neil Vedder <esierraadj@xxxxxxxxxxx>]

So, what was the psi rating of our Mk1/Mod1 OEM rad caps?

Neil Vedder

David Homstad wrote:
> John,
>  
> Increasing the pressure rating of the radiator cap does not make the 
> engine run cooler. The higher pressure will allow the engine to reach 
> a higher temperature before the cooling system internal pressure 
> overcomes the cap spring and it boils over. If your engine doesn't run 
> on the high end of the temp gage, a 7 lb cap is better because it puts 
> less strain on the hoses and radiator core as the pressure cycles when 
> hot and cold.
>  
> Dave Homstad
> 56 Dodge D500
>
>     -----Original Message-----
>     *From:* Forward Look Mopar Discussion List
>     [mailto:L-FORWARDLOOK@xxxxxxxxxxxxx]*On Behalf Of *John Teske
>     *Sent:* Thursday, July 17, 2008 9:15 AM
>     *To:* L-FORWARDLOOK@xxxxxxxxxxxxx
>     *Subject:* Re: [FWDLK] Radiator caps
>
>     Mike:
>
>          My 56 Fury calls for a 14# cap, but I'm using a 7# cap.  It
>     works fine.  I believe that the 14# cap will allow the engine
>     temperature to stay at a cooler temperature while running the
>     engine at high rpm and out put such as during racing.
>
>          The bottom hose on the radiator is the intake for the water
>     pump.  If it is collapsing, I would suspect the radatior cap to be
>     not releasing the vacuum created when the engine cools off. 
>     Collapse of the bottom hose is prevented by a spring inside. Of
>     course, an old hose will swell and collapse easier than a new one.
>
>          John
>
>
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