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Vacuum Controlled Heater Core Valve


Bruno2

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Yes, projects are never really done. Good luck!

Great thread. Got my valve in the other day so looking forward to hooking this up. I will be doing the max ac version for now which means I need to install the ac components soon...

I think the main reason my daughter likes the truck is because we drive with the windows down but today even she asked why hot air was coming out of the vents :nabble_smiley_beam:

Valve I am using:

IMG_20200604_220325-1.jpg.2eff7e8a8b0ad9d65e4934c73f9bce06.jpg

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Great thread. Got my valve in the other day so looking forward to hooking this up. I will be doing the max ac version for now which means I need to install the ac components soon...

I think the main reason my daughter likes the truck is because we drive with the windows down but today even she asked why hot air was coming out of the vents :nabble_smiley_beam:

Valve I am using:

Neat valve! The one I’m using on the Bronco is a bypass, so four ports. I would like to see and know what you think when it’s installed.

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Great thread. Got my valve in the other day so looking forward to hooking this up. I will be doing the max ac version for now which means I need to install the ac components soon...

I think the main reason my daughter likes the truck is because we drive with the windows down but today even she asked why hot air was coming out of the vents :nabble_smiley_beam:

Valve I am using:

I think she'll be pleased. It makes a big difference.

That valve is a Motorcraft YG-136 and Ford PN D4AZ 18495-A, right?

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I think she'll be pleased. It makes a big difference.

That valve is a Motorcraft YG-136 and Ford PN D4AZ 18495-A, right?

That's correct Gary - sorry I should have given a better photo of it.

I would really like to have it functional in vent but will save that conversion for a later date.

Dane - I read about your valve in this thread last night and I really like that idea. I wouldn't mind seeing a photo of it in the bronco as well.

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That's correct Gary - sorry I should have given a better photo of it.

I would really like to have it functional in vent but will save that conversion for a later date.

Dane - I read about your valve in this thread last night and I really like that idea. I wouldn't mind seeing a photo of it in the bronco as well.

Here’s the Bronco setup.

7ABC3A61-9F92-4D32-A67D-FE82E464D0DC.thumb.jpeg.3ffd4c06179508e0e444c70bae9e2572.jpeg

 

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Neat valve! The one I’m using on the Bronco is a bypass, so four ports. I would like to see and know what you think when it’s installed.

I am also using the 4 port bypass valve because I use the water to heat the intake manifold as I am running EFI exh. manifolds on my 300 six motor.

Right now I don't have working AC and this does make a big difference.

I have the later HVAC system so I cant run the vent with out hot water going thru the core.

Dave ----

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Just a tee into the recirc line, right?

You're right - I did talk it up a bit for just being vacuum lines. :nabble_smiley_beam:

I ran to the jy and cut a few of the black/white stripe recirc door lines. Surprising how the vast majority were broke off at the diaphragm.

I used a Dorman 47415 soft tee to connect them. It's made for smaller lines but it worked well and no concern about them falling out.

IMG_20200616_165316.thumb.jpg.3b73e8ead5b52f22030c1353f424c8d1.jpg

Still no a/c system but looking forward to doing a vent temperature test with and without the valve.

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You're right - I did talk it up a bit for just being vacuum lines. :nabble_smiley_beam:

I ran to the jy and cut a few of the black/white stripe recirc door lines. Surprising how the vast majority were broke off at the diaphragm.

I used a Dorman 47415 soft tee to connect them. It's made for smaller lines but it worked well and no concern about them falling out.

Still no a/c system but looking forward to doing a vent temperature test with and without the valve.

Looking good. And you will see a significant difference in temp with the valve closed.

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