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DanHoug Samba Member
Joined: December 05, 2016 Posts: 4800 Location: Bemidji, MN
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Posted: Tue Mar 21, 2023 5:19 pm Post subject: Re: Ford front heater valve. |
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Wildthings wrote: |
The plastic valves are pretty touchy as far as adjusting the heat goes, can't say how the metal ones compare. |
i put in a high temp ball valve in my 87 to eliminate the chance of a leaking OEM valve but to also increase heater core flow at wide open, which it did. it's mounted to the left of the glove box in the heater hoses and it too is touchy as to position and coolant flow. my co-pilot constantly fiddled with it as we went from low to high altitude on our AZ trip but me thinks the same would be said for any manual heat control as the exterior temps varied.
fortunately, it's an easy reach for the passenger and i have freakishly long arms and can swing it from the drivers seat with a slight forward lean. _________________ -dan
60% of what you find on the internet is wrong, including this post.
'87 Westy & '89 Westy both 2.1 4spd
Past projects can be found at--
www.thefixitworkshop.com |
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therastavan Samba Member
Joined: July 30, 2020 Posts: 81 Location: California
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Posted: Tue Mar 21, 2023 5:03 pm Post subject: Re: Ford front heater valve. |
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I just got the 74627 valve and it is MASSIVE! My question is, how do you use the stock cable on it because there is no hole like in the OEM heater valve where the cable just slips into. Also, the arm is much much stiffer than the original arm. |
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therastavan Samba Member
Joined: July 30, 2020 Posts: 81 Location: California
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Posted: Wed Mar 08, 2023 3:44 pm Post subject: Re: Ford front heater valve. |
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michaelasnider wrote: |
therastavan wrote: |
So what is the final consensus on aftermarket Ford etc valves? Which is the best and do they all need modifications of the cable wire? |
I put in the 75627 in May of last year and have had no issues since. |
Did you have to make any modifications to the original cable etc? |
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michaelasnider Samba Member
Joined: September 27, 2013 Posts: 369 Location: East Kootenays, Canada
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Posted: Wed Mar 08, 2023 7:19 am Post subject: Re: Ford front heater valve. |
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therastavan wrote: |
So what is the final consensus on aftermarket Ford etc valves? Which is the best and do they all need modifications of the cable wire? |
I put in the 75627 in May of last year and have had no issues since. |
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vanis13 Samba Member
Joined: August 15, 2010 Posts: 3100 Location: ABQ NM USA.... Except when not
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Wildthings Samba Member
Joined: March 13, 2005 Posts: 50352
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Posted: Tue Mar 07, 2023 9:15 pm Post subject: Re: Ford front heater valve. |
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The plastic valves are pretty touchy as far as adjusting the heat goes, can't say how the metal ones compare. |
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therastavan Samba Member
Joined: July 30, 2020 Posts: 81 Location: California
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Posted: Tue Mar 07, 2023 7:58 pm Post subject: Re: Ford front heater valve. |
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So what is the final consensus on aftermarket Ford etc valves? Which is the best and do they all need modifications of the cable wire? |
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djkeev Samba Moderator
Joined: September 30, 2007 Posts: 32632 Location: Reading Pennsylvania
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djkeev Samba Moderator
Joined: September 30, 2007 Posts: 32632 Location: Reading Pennsylvania
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Posted: Fri Sep 10, 2021 3:03 pm Post subject: Re: Ford front heater valve. |
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Wildthings wrote: |
djkeev wrote: |
Here is my 4seasons 74827 looking into the exit port fully closed
....
Anyone have a better idea?
Dave |
I agree, that being what I said using a lot fewer words in an earlier post. |
But you didn't have pictures!!
Coincidently, my 86 has the 74627 valve installed and it was never a problem with bleeding until this Summer when my Brother called saying that he could NOT turn off the heater fully!
I am guessing that the cable shifted or the valve went bad.
I had installed TK's inline valve on that unit and told him how to turn off the heat.
The 74627 is plastic and flows in the same direction as the metal 74827.
I mounted the 74627 above the spare tire with the control cable coming down to it, thus the coolant flow direction is correct.
If I had mounted the my metal 74827 above the spare tire, the flow direction would also be correct.
I changed things at the last minute and mounted my metal 74827 in the Van just after the hose enters through the hump.
I didn't give the arrow on the valve a thought.......
As a result of the relocation the control cable approach direction mandated the valve be flipped end for end and created my reverse flow bleed problem.
Moral of the story, check the flow arrow on the valve as you install it.
Choose the proper valve ........
74627 & 74827 for mounting in the factory location above the spare tire.
74628 & 74828 for mounting inside the passenger area.
Dave _________________ Stop Dead Photo Links how to post photos
Ghia
http://www.thesamba.com/vw/forum/viewtopic.php?t=392473
Vanagon
http://www.thesamba.com/vw/forum/viewtopic.php?p=6315537#6315537
Beetle
https://www.thesamba.com/vw/forum/viewtopic.php?t=482968&highlight=74+super+vert |
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Wildthings Samba Member
Joined: March 13, 2005 Posts: 50352
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Posted: Fri Sep 10, 2021 2:49 pm Post subject: Re: Ford front heater valve. |
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djkeev wrote: |
Here is my 4seasons 74827 looking into the exit port fully closed
....
Anyone have a better idea?
Dave |
I agree, that being what I said using a lot fewer words in an earlier post. |
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djkeev Samba Moderator
Joined: September 30, 2007 Posts: 32632 Location: Reading Pennsylvania
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Posted: Fri Sep 10, 2021 2:39 pm Post subject: Re: Ford front heater valve. |
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Here is my 4seasons 74827 looking into the exit port fully closed
Looking into the entry port partially open. The funny slot it what water flows through on the tiniest partially open position. It eventually opens into a full hole.
Here is the old 74827 in the vise having the tabs bent up to disassemble it......
Once the tabs are bent up the control assembly lifts right off.
The interior rotating drum comes with it for the control lever is fastened to the drum with a rivet.
Notice the bigger rubber gasket sealing the assembly onto the body.
This is the fully closed side of the drum ...... it actually takes more than 180° of the drum leaving the open position with maybe 160° or so to pass water through the valve in a straight line.
The bottom of the drum rotates in the recess in the bottom of the valve housing.
What I found curious is that only the Exit port has a gasket to seal water flow.
When in the off position water is free to enter the valve but not exit.
Here is the entry port ..... no gasket ......
And the exit port, notice the gasket fit at the port......
The removed gasket, formed to fit into the exit port and concave to fit the valves round body.....
The disassembled valve with flow direction noted ......
So, why does warm coolant enter the heater core when installed wrong and completely turned off?
My theory........
If PROPERLY installed
The coolant enters the rotating control drum and the water pressure, such as it is, is inside the drum and pushing the concave surface of the closed drum ever tighter against the seal.
I'm sure the seal softens and becomes more pliable when warm?
If installed INCORRECTLY
The coolant flow remains outside of the valve. The water pressure pushing against the closed convex side of the drum is pushing the drum away from the warm seal.
Not much...... just enough to bleed some hot coolant through.
That's my educated guess.......
Anyone have a better idea?
Dave _________________ Stop Dead Photo Links how to post photos
Ghia
http://www.thesamba.com/vw/forum/viewtopic.php?t=392473
Vanagon
http://www.thesamba.com/vw/forum/viewtopic.php?p=6315537#6315537
Beetle
https://www.thesamba.com/vw/forum/viewtopic.php?t=482968&highlight=74+super+vert |
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djkeev Samba Moderator
Joined: September 30, 2007 Posts: 32632 Location: Reading Pennsylvania
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djkeev Samba Moderator
Joined: September 30, 2007 Posts: 32632 Location: Reading Pennsylvania
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wesitarz Samba Member
Joined: August 20, 2012 Posts: 1491 Location: Victoria,B.C.Canada
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Posted: Wed Sep 08, 2021 3:51 pm Post subject: Re: Ford front heater valve. |
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That valve is $60 + tax (CAN) at NAPA. I put a ball valve in the hot heater line for summer hot foot. I'll keep it in mind though. |
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Wildthings Samba Member
Joined: March 13, 2005 Posts: 50352
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Posted: Tue Sep 07, 2021 11:12 am Post subject: Re: Ford front heater valve. |
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djkeev wrote: |
Needless to say........ I just ordered a 74828 valve.
Physically they are identical valves from the outside.
I don't know what makes a difference on the rotating interior seals but I can only guess it is how the lips of the seal lie upon the rotating ball.
Are they being forced open by the coolant flow rather than forced tighter against the rotating ball..... aka closed?
Dave |
Yes you need the valve for the correct flow direction. I assume that with the reversed flow the pressure forces the ball away from the port it seals against but really don't know. |
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djkeev Samba Moderator
Joined: September 30, 2007 Posts: 32632 Location: Reading Pennsylvania
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Posted: Tue Sep 07, 2021 9:28 am Post subject: Re: Ford front heater valve. |
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On my 1990 I installed the Ford heater control valve.
It seems my FLAPS sold me a 4seasons 74827 valve.
5/8” connections and pull on.
This is a NON BLEEDER valve,
The fluid flow comes from the end without the operating cable clamp support
All Summer long I've been battling a hot heater core!
There is little worse than heat on a 94° sunny day!
I ended up clamping the hoses off to stop the flow.
I was disappointed to say the least about this internal leakage!
Then it occurred to me...... "Are these flow direction specific?"
Upon close examination they are!
And the coolant flow through my 74827 is backwards!
My hot coolant comes up out of the floor, through the valve and into the heater core.
Heater flow on the 2.1 is from the coolant distribution tower off the right head and then to the heater valve/valves.
Even with the return clamped blocking the return path coolant somehow bypasses the valve and warms the heater core.
So the 4 season 74828 flows in the opposite direction.
The in port is the end with the cable clamp plate. Just the opposite of my 74827.
I need a 74828 valve.
Heavy sigh........
Needless to say........ I just ordered a 74828 valve.
Physically they are identical valves from the outside.
I don't know what makes a difference on the rotating interior seals but I can only guess it is how the lips of the seal lie upon the rotating ball.
Are they being forced open by the coolant flow rather than forced tighter against the rotating ball..... aka closed?
Dave _________________ Stop Dead Photo Links how to post photos
Ghia
http://www.thesamba.com/vw/forum/viewtopic.php?t=392473
Vanagon
http://www.thesamba.com/vw/forum/viewtopic.php?p=6315537#6315537
Beetle
https://www.thesamba.com/vw/forum/viewtopic.php?t=482968&highlight=74+super+vert |
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dobryan Samba Member
Joined: March 24, 2006 Posts: 16505 Location: Brookeville, MD
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sped372 Samba Member
Joined: March 30, 2006 Posts: 653 Location: Waunakee, WI
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Posted: Fri Jun 02, 2017 5:16 am Post subject: Re: Elegant fix for a leaky front heater valve. |
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After noticing some drips under the spare tire pan, I've joined the 1141 revolution. Thanks for the tip! _________________ 1971 Karmann Ghia - 1600 DP
1984 Westfalia - 1.9 WBX |
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Paulbeard Samba Member
Joined: July 10, 2015 Posts: 2604 Location: Seattle
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Posted: Tue May 24, 2016 5:34 pm Post subject: Re: Elegant fix for a leaky front heater valve. |
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I just ordered the Balkamp (NAPA part 6601140) and will see if I can swap it in tomorrow. It will replace an in-cab switch behind the vent shroud.
It's 4-5 times the cost of the generic valve I put in a few months back and I am hopeful it is more durable. The TK shutoff is an option as well but that will come later, probably in tandem with a rear heater delete. _________________ Currently -> Frida: 87 Tizian Red (mostly) Vanagon GL Westfalia w/ 2.0L ABA conversion
Formerly -> Steward of a 73 Super Beetle (Beater) and 67 Beetle 1300 (Little Max) both names by POs
— dhaavers |
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djkeev Samba Moderator
Joined: September 30, 2007 Posts: 32632 Location: Reading Pennsylvania
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