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06-14-2013, 12:34 PM
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#1 |
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Registered User
Join Date: May 2000
Location: Flin Flon, Manitoba, Canada
Posts: 8,853
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Heater hoses
Are the hoses 2 different diameters? I bought som 3/4 heater hose but its to large to go on the tilting in the intake. Must be 5/8"?
Posted via Mobile Device
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My name's Tim and I'm a truckaholic My 56 Chevy shop truck build http://67-72chevytrucks.com/vboard/s...d.php?t=562795 |
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06-14-2013, 01:01 PM
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#2 |
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Registered User
Join Date: Jul 2011
Location: Las Vegas - Nev. aka Sin City
Posts: 1,835
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Re: Heater hoses
my 57 is 3/4 on side and 5/8 the other -
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06-14-2013, 01:22 PM
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#3 |
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Registered User
Join Date: Apr 2013
Location: Knoxville TN
Posts: 1,170
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Re: Heater hoses
GM likes to use both 5/8" and 3/4".
Don't know why. |
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06-14-2013, 01:26 PM
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#4 |
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Registered User
Join Date: May 2000
Location: Flin Flon, Manitoba, Canada
Posts: 8,853
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Re: Heater hoses
So if I'm standing at the front of the truck looking at the lines coming through the firewall, which one goes to the water pump?
Posted via Mobile Device
__________________
My name's Tim and I'm a truckaholic My 56 Chevy shop truck build http://67-72chevytrucks.com/vboard/s...d.php?t=562795 |
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06-14-2013, 01:38 PM
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#5 |
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Registered User
Join Date: Jul 2011
Location: Las Vegas - Nev. aka Sin City
Posts: 1,835
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Re: Heater hoses
mine has it /34 to da pump and 5/8 to da intake connection
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06-14-2013, 01:41 PM
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#6 |
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Registered User
Join Date: May 2000
Location: Flin Flon, Manitoba, Canada
Posts: 8,853
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Re: Heater hoses
Yeah but which line coming through the firewall goes to each?
Posted via Mobile Device
__________________
My name's Tim and I'm a truckaholic My 56 Chevy shop truck build http://67-72chevytrucks.com/vboard/s...d.php?t=562795 |
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06-14-2013, 01:44 PM
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#7 |
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Registered User
Join Date: Jul 2011
Location: Las Vegas - Nev. aka Sin City
Posts: 1,835
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Re: Heater hoses
lookin at da firewall left copper line goes to the waterpump - right copper line goes to the intake port next to the themostat ----
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06-14-2013, 01:47 PM
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#8 |
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Registered User
Join Date: May 2000
Location: Flin Flon, Manitoba, Canada
Posts: 8,853
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Re: Heater hoses
Thanks man
Posted via Mobile Device
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My name's Tim and I'm a truckaholic My 56 Chevy shop truck build http://67-72chevytrucks.com/vboard/s...d.php?t=562795 |
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06-14-2013, 01:51 PM
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#9 |
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Registered User
Join Date: Jul 2011
Location: Las Vegas - Nev. aka Sin City
Posts: 1,835
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Re: Heater hoses
FIREWALL----0 o----
3/4 5/8^-------------------intake 5/8 waterpump 3/4 Last edited by Daze57; 06-14-2013 at 01:52 PM. Reason: NOT CORRECT |
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06-14-2013, 01:55 PM
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#10 |
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Registered User
Join Date: Jul 2011
Location: Las Vegas - Nev. aka Sin City
Posts: 1,835
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Re: Heater hoses
artistic skills - they aint v good
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06-14-2013, 03:08 PM
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#11 | |
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Registered User
Join Date: Jan 2012
Location: Motown
Posts: 7,680
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Re: Heater hoses
Quote:
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cool, an ogre smiley Ogre's 58 Truk buildhow to put your truck year and build thread into your signature shop air compressor timer |
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06-14-2013, 03:52 PM
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#12 |
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Registered User
 
Join Date: Jul 2007
Location: Toppenish, WA
Posts: 15,713
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Re: Heater hoses
I've never figured out the "why" either but GM has done that on almost everything since they built. I'd imagine it has something to do with helping the coolant flow back to the water pump.
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Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around. |
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06-17-2013, 12:40 AM
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#13 | |
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Registered User
Join Date: Mar 2013
Location: Silvana, WA
Posts: 181
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Re: Heater hoses
Quote:
Sounds a little rediculous to me, I wouldn't think the small amount of heat the heatercore removes from the fluid would be enough to cause that kind of expansion, but the theory does make sense. Posted via Mobile Device |
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06-17-2013, 10:24 AM
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#14 |
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Registered User
Join Date: Aug 2011
Location: Tucson, AZ
Posts: 917
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Re: Heater hoses
It's common practice to make the suction side larger than the pressure side on a liquid pumping system. The water pump is the suction side.
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