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[GMCnet] Is the 3/4 inch heater hose to the dash heater from the engine? And the 5/8 inch hose bach to the cooling system. [message #319422] Wed, 21 June 2017 20:15 Go to next message
BobDunahugh is currently offline  BobDunahugh   United States
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The vacuum controlled 5/8 heater water valve is directional that's in the 5/8 inch return hose. Am I correct? Bob Dunahugh 78 Royale
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Re: [GMCnet] Is the 3/4 inch heater hose to the dash heater from the engine? And the 5/8 inch hose bach to the cooling system. [message #319429 is a reply to message #319422] Wed, 21 June 2017 21:29 Go to previous messageGo to next message
Richard Denney is currently offline  Richard Denney   United States
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The 5/8" hose is the supply, from the rear intake port. The 3/4" hose
returns water from the heater to the water pump. The heater control valve
is in the 5/8" supply hose.

Rick "who just replumbed misrouted heater hoses" Denney

On Wed, Jun 21, 2017 at 9:15 PM Bob Dunahugh wrote:

> The vacuum controlled 5/8 heater water valve is directional that's in the
> 5/8 inch return hose. Am I correct? Bob Dunahugh 78 Royale
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--
Rick Denney
73 x-Glacier 230 "Jaws"
Off-list email to rick at rickdenney dot com
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Re: [GMCnet] Is the 3/4 inch heater hose to the dash heater from the engine? And the 5/8 inch hose bach to the cooling system. [message #319434 is a reply to message #319422] Wed, 21 June 2017 21:55 Go to previous messageGo to next message
BobDunahugh is currently offline  BobDunahugh   United States
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Thanks Rick. What was I thinking. The water pump handles the coolest water in the engine. The hottest comes off the back. Thanks again.

Bob Dunahugh 78 Royale
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Re: [GMCnet] Is the 3/4 inch heater hose to the dash heater from the engine? And the 5/8 inch hose bach to the cooling system. [message #319437 is a reply to message #319434] Wed, 21 June 2017 22:20 Go to previous message
USAussie is currently offline  USAussie   United States
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G'day,,

Some photos that might clarify:

http://www.gmcmhphotos.com/photos/g6301-engine-cooling-photos.html

Regards,
Rob M.
The Pedantic Mechanic
USAussie - Downunder
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
USA '77 Kingsley - TZE 267V100808




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Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426
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