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7/28/08 9:33pm - Original Message: 'INSTALLING A VALVE ON THE HEATER HOSES'
tinbender
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edgwood, MD - USA

Vette(s):
1975 convertible,with the hard top and power streering.it a 350 L48 with auto trans. the color is light blue.

Joined: 11/1/2007
Posts: 736
 THERE WAS A COUPLE OF POST ABOUT THE HEAT INSIDE THE CAR,THE REPLY WAS TO PUT  VALVES ON THE HEATER HOSES. DOSE ANYONE HAVE ANY PICTURES OF WHAT THIS LOOKS LIKE AFTER THEY ARE INSTALLED.I AM THINKING OF DOING THIS,BUT WOULD LIKE TO SEE HOW IT LOOKS FIRST.ALSO CAN ANYONE TELL ME THE DIFFERENCE BETWEEN THE VALVES FROM LOWES AND NAPA?
                                 RICK
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7/28/08 9:47pm - Reply: 'INSTALLING A VALVE ON THE HEATER HOSES'
ranger3 Lifetime Member
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North Charleston, SC - USA

Vette(s):
1975 L48 AT AC T-top

Joined: 3/20/2004
Posts: 4176
NAPA has them. One is 5/8" and the other is 3/4". I cut the hoses under the car and the valves are out of sight. I makes a huge difference in radiant heat coming from the heater core.

Scott


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7/28/08 10:46pm - Reply: 'INSTALLING A VALVE ON THE HEATER HOSES'
KDADDY79
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Dutchess County, NY - USA

Vette(s):
White '79 Corvette. It's a driver.

Joined: 8/27/2007
Posts: 2484
RNB,
I recently got real interested in this, too. An unrelated problem (turned out to be in the distributor) caused me to loose my focus.
 
Ranger3,
By doing this job under the car, did you cut the hoses towards the rear of the engine compartment under the heater core?
By doing so, there is obviously no coolant entering back in to the motor via the Intake Manifold. Is this OK for the motor?
Does a lack of coolant in the heater core cause any issues once you open the valves again for the cool weather?
 
I think this sounds like a smart idea but I gotta go ahead and ask away on this.
 
Thanks,
Kevin 


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7/28/08 10:59pm - Reply: 'INSTALLING A VALVE ON THE HEATER HOSES'
Norsky Lifetime Member
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Twin Lakes, CO - USA

Vette(s):
SOLD - "The Toy" - 1970 Convertible
SOLD - "The Beast" - 1990 ZR-1 (#682)
"BLKBRRD" - 1978 Trans Am, 400ci/285hp, 4 spd, Black w/black interior, Hurst t-tops

Joined: 1/23/2002
Posts: 6712
Moving this thread to the Cooling & Heating Systems forum where other similar threads are.

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7/29/08 1:13am - Reply: 'INSTALLING A VALVE ON THE HEATER HOSES'
suncountry Lifetime Member
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Moses Lake, WA - USA

Vette(s):
1976 L48 4-spd, Mahogany Metalic exterior, Buckskin interior 350ci/350hp, 3rd owner, fiberglass spring, 255/50-16's Torq-Thrust II

Joined: 4/16/2005
Posts: 2134
I installed the valves in the same area as the factory valve was located. This way I could open or close valves with out getting under the vette. So far I have had no issues with this.

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C3VR Lifetime Member #110 We are all young at heart Glen
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7/29/08 7:59am - Reply: 'INSTALLING A VALVE ON THE HEATER HOSES'
crossfire1982
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Cramerton, NC - USA

Vette(s):
black 1982 coupe slate gray interior, 350 crossfire, 1985 fuel pump, Steeroids R&P conversion

Joined: 8/22/2006
Posts: 1094
I mounted mine under the car as well, near the heater core where the hoses make the turn upward to the core connectors.  I have to reach under the car to get to them but dont have to put it on ramps or jack it up to turn them on or off.  Turn them off in the spring, turn them back on in the fall.  I used the valves from NAPA but have seen some pretty good looking quarter turn valves from the hardware stores.  The valves from NAPA are UGLY !!! thats one reason I put mine under the car.

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7/29/08 9:48am - Reply: 'INSTALLING A VALVE ON THE HEATER HOSES'
DaveM Lifetime Member
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Flanders, NJ - USA

Vette(s):
1982 Black, ZZ4, Hooker Side Pipes, 3.55 Rear, Rebuilt & upgraded 700R4, All new suspension, brakes, & new Charcoal interior.

Joined: 1/27/2004
Posts: 2530
I think the NAPA valves look just fine, they are nice & compact. I had a valve fron Lowes, but it is a plumping valve and looks like Bubba issue.
I heard the Advance & Auto Zone have them for about half the price of NAPA's valves.
 
I have mine up top, just because it's easier Thumbs%20Up
 
Kevin, there is no problem using these valves, it will not harm the engine at all. Try it, you'll like it LOL
Dave


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7/29/08 4:01pm - Reply: 'INSTALLING A VALVE ON THE HEATER HOSES'
tinbender
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edgwood, MD - USA

Vette(s):
1975 convertible,with the hard top and power streering.it a 350 L48 with auto trans. the color is light blue.

Joined: 11/1/2007
Posts: 736
First sorry  I wasn't sure were to post this, I will check out advance auto and auto zone then.
                                    Thanks
                                        Rick


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7/29/08 9:54pm - Reply: 'INSTALLING A VALVE ON THE HEATER HOSES'
KDADDY79
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Dutchess County, NY - USA

Vette(s):
White '79 Corvette. It's a driver.

Joined: 8/27/2007
Posts: 2484
OK. I'm gonna take the plunge!   Big%20smile
Thanks for the info. on Advance & Auto Zone vs. NAPA.


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7/30/08 8:57pm - Reply: 'INSTALLING A VALVE ON THE HEATER HOSES'
tuxblacray Lifetime Member
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Greensburg, IN - USA

Vette(s):
Previous: 1984 Silver / Charcoal Coupe, 1988 Maroon Coupe / 1989 Artic White / Mod. Red Int. Coupe, Present:1976 Stingray Black / Black, Auto, 350 slightly modified (355 hp) Luxor Wires Redline Tires. / 2001 Speedway White Vert, Torch Red Int, LS1, Auto.

Joined: 9/24/2003
Posts: 5174
Jim G had some great information on this but it was long ago I am still searching for it. I believe he shot photo's of it as well. Maybe he will see this and post up.

Or..... ya'll could PM him......

For now this thread on HEAT should give ya what you need......Tuxblacray2008-07-30 18:21:16

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7/31/08 11:46am - Reply: 'INSTALLING A VALVE ON THE HEATER HOSES'
rraider1
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Woodland, WA - USA

Vette(s):
1977 T-Top,350,Auto Black Ruby Pearl,Steeroids R&P conversion

Joined: 10/14/2003
Posts: 1152
I would like to ask a couple of questions on this to get good opinions. I replaced my stock vave and and replaced the little vacum shutoff valve behind the passenger dash and adjusted it . I know mine is working properly.
1. If the valve is shuting off the one line to the heater core, will heat still be present at the heater core with the other line open?
2. If it still would be present would it not be a good idea to place another vacum valve on the other line so both lines are shutoff?you would be able to place a tee for the vacum line and control both valves.
3. mine is a 77 are other years harder to get working properly?


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7/31/08 4:14pm - Reply: 'INSTALLING A VALVE ON THE HEATER HOSES'
ranger3 Lifetime Member
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North Charleston, SC - USA

Vette(s):
1975 L48 AT AC T-top

Joined: 3/20/2004
Posts: 4176
I still had a lot of radiant heat until I put a valve on both hoses. I have never had any problems since.


Scott


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8/1/08 10:00am - Reply: 'INSTALLING A VALVE ON THE HEATER HOSES'
tonyb47
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Suffern, NY - USA

Vette(s):
1976 restored,new interior,custom paint(purple),body kit,rebuilt engine,trans,upgraded sound system

Joined: 3/16/2005
Posts: 227

anybody have the part numbers for both valves from napa



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8/1/08 6:06pm - Reply: 'INSTALLING A VALVE ON THE HEATER HOSES'
acplus
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, - Canada

Vette(s):
1972, 1980

Joined: 6/23/2008
Posts: 558
you can put a standard inline vacuum control heater valve in the input side of the heater core hose...but first check to see if you have vacuum to the valve when the heater is turned on...or no vacuum when the heater is turned on. There are two types of vacuum control valves one is called normally closed and the other normally open. If there is vacuum present when the heater is turned to hot then you will need the normally closed valve...if not you need the normally open valve...the valve should be inlet and outlet size for the 5/8" hoses. Hope this helps

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8/1/08 10:14pm - Reply: 'INSTALLING A VALVE ON THE HEATER HOSES'
crossfire1982
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Cramerton, NC - USA

Vette(s):
black 1982 coupe slate gray interior, 350 crossfire, 1985 fuel pump, Steeroids R&P conversion

Joined: 8/22/2006
Posts: 1094
Part numbers for the valves at NAPA are 3/4 inch 660-1413 
5/8 inch 660-1414


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8/1/08 10:16pm - Reply: 'INSTALLING A VALVE ON THE HEATER HOSES'
tinbender
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edgwood, MD - USA

Vette(s):
1975 convertible,with the hard top and power streering.it a 350 L48 with auto trans. the color is light blue.

Joined: 11/1/2007
Posts: 736
I went to auto zone ,and the guy there couldn't find the part numbers in his computer. I'll try advance auto next.

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8/2/08 7:41am - Reply: 'INSTALLING A VALVE ON THE HEATER HOSES'
tb2k82ce Lifetime Member
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Lemon Grove, CA - USA

Vette(s):
1982 C3 Collectors Edition 44000 miles, sat in the sun most of it's life, My wife purchased it for me for fathers day in 2007 from her girl friend that had it for 19 years. It is on the road again. I'm retired but it is now my daily driver.

Joined: 10/17/2007
Posts: 2007
ACPLUS  John
 
Do you have any part numbers or sources? Can someone provide the amount of vaccum we should be getting? THis seems like a great way to not have to worry about turning it on or off manually. 


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8/2/08 8:10am - Reply: 'INSTALLING A VALVE ON THE HEATER HOSES'
JimG Lifetime Member
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Gloucester, VA - USA

Vette(s):
1979 T-Top, Metallic Green ZZ4 350/355 hp 405 ft/lbs torque Dual Spal Fans 700R4 4 Spd O/D Transmission 2004 Z06 Commemorative Edition

Joined: 1/29/2005
Posts: 1453
[QUOTE=Tuxblacray]Jim G had some great information on this but it was long ago I am still searching for it. I believe he shot photo's of it as well. Maybe he will see this and post up.

Or..... ya'll could PM him......

For now this thread on HEAT should give ya what you need......[/QUOTE]

I'd have to go dig for the pics...or take some new ones. I have NAPA valves on both lines. 

Someone needs to wake me up when a post like this comes up. Been busy with the honey do list since I got back...


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8/2/08 10:19am - Reply: 'INSTALLING A VALVE ON THE HEATER HOSES'
DaveM Lifetime Member
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Flanders, NJ - USA

Vette(s):
1982 Black, ZZ4, Hooker Side Pipes, 3.55 Rear, Rebuilt & upgraded 700R4, All new suspension, brakes, & new Charcoal interior.

Joined: 1/27/2004
Posts: 2530
[QUOTE=Tb2k82CE]ACPLUS  John
 
Do you have any part numbers or sources? Can someone provide the amount of vaccum we should be getting? THis seems like a great way to not have to worry about turning it on or off manually. 
[/QUOTE]
 
On the '82 the shut off valve closes when you turn the AC on. I don't know about the other years. That does not help when your cruising with the tops off and your feet are roasting. The best thing is to put both valves in.
Just one does not help because the heat migrates up the water in the open hose. You only need to close them in the spring and then open them in the fall, not much trouble at all.
Dave


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Dave's '82


   
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8/2/08 11:34am - Reply: 'INSTALLING A VALVE ON THE HEATER HOSES'
tonyb47
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Suffern, NY - USA

Vette(s):
1976 restored,new interior,custom paint(purple),body kit,rebuilt engine,trans,upgraded sound system

Joined: 3/16/2005
Posts: 227
thanks for the part number, i also went to autozone and they had no idea what I was talking about, I also tried a local parts store with no luck

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