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TexasTodd
Dodge Dakota
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5/25/2007
20:59:10
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 Subject: Want Colder A/C?.......
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I've posted this years ago, thought it worth posting again.
One member here even did an objective test on the a/c temp, and found it to be 9 degrees colder. Try setting your house thermostat 9 degrees warmer, and you really see the difference.
This is achieved, by putting a 1/2-3/4 inch, stop/ball valve, into the inlet side of the hot water heater. Some people have done both hoses. You don't need any new hose, just cut an inch out of your existing one. The stop/ball valve I used, from home depot, was about $4 dollars, and only turns 90 degrees to go from open to closed. I think it was for natural gas. It's been on there, over 4 years.
During the summer, I ride around with the temp switch all the way over to the Red, like full heat, and it's cold as he!!. !
Now some said, ow, you'll rot out your heater core, etc. Well, it's the same water, and I rarely open the ball valve in the summer a few minutes, to let it flow thru.
Then, many posted things like, 'old hat' we've been doing this for years. Especially on un-air conditioned work trucks, etc.
Let me tell you folks, this kicks a$$. It's very inexpensive, etc. Your compressor kicks on less, therefore even saving some gas and H/P.
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yepp well
Dodge Dakota
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5/26/2007
01:01:25
|  RE: Want Colder A/C?.......
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sounds like one for myth busters to me
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Marv
Dodge Dakota
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5/26/2007
01:48:45
|  RE: Want Colder A/C?.......
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This really works, folks.
Did it myself, using a valve from a Tacoma (right size for the Dakota hoses). It doesn't close off the flow 100%. It's designed to let a trickle get through so the coolant will always be moving in the system.
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OBIO3
Dodge Dakota
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5/26/2007
17:10:07
| RE: Want Colder A/C?.......
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Back in the early days like 40's, 50's and other years up or down the CARS WERE EQUIPPED WITH A VALVE LIKE THIS THAT HAD A LEAVER AND CABLE ALLOWING YOU TO SHUT OFF THE HEATER from in the cab. some old cars had the valve right on the eater. You just reached down and turned the knob. I don't recall any damage to heater cores ever.
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Super bee
GenI
5/28/2007
13:36:02
| RE: Want Colder A/C?.......
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my 1990 has a vacuum actuated switch that does this automatically
well, its supposed to, weather it works or not i really don't know
1990 sport RC SB, 1995 318drivetrain, 3.92 gears (came with truck) Powertrax "traction system", 95 dash/steering wheel, hearthrob exhaust, headers, cutout after y-pipe, necessary electric fan add-a-leafs, 30x9.5 mud tires, cranked T-bars, AR 39 15x8 rims, grill guard, roll bars
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TexasTurd
Dodge Dakota
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5/28/2007
18:13:07
| RE: Want Colder A/C?.......
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Nothing like stating the obvious, TexasTodd. This has been covered time and time again.
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TexasTodd
Dodge Dakota
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5/28/2007
22:03:09
| RE: Want Colder A/C?.......
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Hey piss ant, show me the times.
Tell you fudge packing boyfriend to take his tongue out.
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RadioMan
Dodge Dakota
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5/29/2007
06:54:00
|  RE: Want Colder A/C?.......
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It really does work AND it is "Old Hat"!
My 79 AMC has a vacuum actuated heat control that
when you set the heat to the coldest setting,
water *flow* to the heater coil stops. It's just
a little vacuum switch that gets pressed by the
temp control.
I'm thinking if adding the vacuum valve to my
Dakota's system. That way I can switch the *flow*
on and off within the cab. Doesn't have to be
anything fancy to run the valve within the cab
either.
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Bob Lincoln
Dodge Dakota
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5/29/2007
08:38:26
| RE: Want Colder A/C?.......
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Yup, my 92 Daytona has this setup from the factory, as did many other MoPars from that time. But my 92 Dakota can chill beer with its original R-12 setup, so no need to modify anything there.
BTW, it's good to get flow through the heater core so mineral deposits don't build up. Nothing is perfect, so even with distilled water, some crud will form.
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Old Fart
Dodge Dakota
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4/08/2008
19:25:55
| RE: Want Colder A/C?.......
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I had a 1968 Fiat 850 with the heater valve inside on the passenger side under the dash.
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boomer82
Dodge Dakota
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4/09/2008
06:34:42
| RE: Want Colder A/C?.......
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learn somethin new everyday, I've never heard of anyone doin that but I've seen other vehicles like the diesels at work have an oil cooler, not a radiator, so the heater inside the cab has oil lines ran to it. There's a valve to shut the oil flow off to the heater.
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TexasTurd
Dodge Dakota
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4/09/2008
15:23:46
|  RE: Want Colder A/C?.......
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If you read TT post, you will see the attitude that he has.
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partsmanager
Dodge Dakota
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4/09/2008
20:02:01
| RE: Want Colder A/C?.......
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Another way to get colder A/C is to wrap the low side lines in heat reflective tape/wrap to keep them from absorbing engine heat before entering the evap core. since R-134 doesnt absorb heat as well as R-12 any less heat from the engine only helps it pull heat from inside the cab. did mine when I got it in 2000 noticed the difference instantly
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YaMama
Dodge Dakota
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4/09/2008
21:40:33
| RE: Want Colder A/C?.......
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Mopars, generally, suck. Other than that, they're OK.
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TexasTodd
Dodge Dakota
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4/10/2008
09:17:49
|  RE: Want Colder A/C?.......
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Old Fart,
Thanks for digging up this old post, good info for this time of year.
NOw that temps are in the 80'sF again around here, I'm about to close off that valve again, and enjoyed the frosty cold A/C.
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FUTT
Dodge Dakota
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4/10/2008
20:13:06
| RE: Want Colder A/C?.......
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Thank goodness, the Great One TexasTodd is back!
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