Herb,

Breaking either heater hose (or rad hose) still releases the water under pressure since the entire system is under pressure.  The return heater hose is 'theoretically' cooler since it has had some of its heat bled off by the heater core and heater fan (if it's on) much like the lower rad hose is normally cooler than the top rad hose.

Thanks for asking about the car.  One auction got to $24,600 and I turned down $25,000.  Just takes the right buyer. :*)  Anyone know someone that might be interested, http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=2480184028

Dale McIntosh
TC Gold #92/ACES #1709/NECOA #41
67SS/67 Elky
DalesPlace  My 67 SS and 67 El Camino
ChevelleStuff  Decoding info on 64-72 Chevelles
MidwestChevelles  Midwest Chevelle Show Information


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> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]] On Behalf Of Herb Lumpp
> Sent: Sunday, May 30, 2004 7:14 AM
> To: The Chevelle Mailing List
> Subject: RE: [Chevelle-list] Hey Herb...
>
> Thanks Dale.  When I think about it you're most likely
> correct.  Since the coolant is being pushed out the intake
> into the upper rad hose, it make senses that the coolant
> would go the same direction into the upper heater hose, and
> if the lower rad hose is supplying the w/p with coolant and
> the lower heater hose is attached just above the rad hose,
> once again it only makes sense that the lower heater hose is
> the return line to the pump.
>
> When my upper heater hose blew off and the coolant was
> flowing out of it, maybe it was just the pressure?  I didn't
> run the engine too long for obvious reasons so that incident
> wasn't conclusive to the direction of water flow.
>
> BTW, any bites on the Pumpkin?
>
> Herb Lumpp
> http://users.adelphia.net/~hlump/index.htm
>
>
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of Dale McIntosh
> Sent: Saturday, May 29, 2004 11:42 PM
> To: 'The Chevelle Mailing List'
> Subject: RE: [Chevelle-list] Hey Herb...
>
>
> The 'pressure' water line runs from the intake to the heater
> box (5/8" hose) and the return line (3/4" hose) runs to the
> water pump.
>
> Dale McIntosh
>
>
>
>

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