1977 280z Interior HVAC questions

[ckurtz2]

hey guys,

my 1977 Z is under the knife again, this time for a complete interior restoration. Currently I am doing a full rebuild of the HVAC unit inside the dash down to the bolt. (AC box, heater box, climate control module, etc). I have everything apart and have a plan for pretty much everything except the heater core/vacuum water **** and the temperature control water ****( apologies if this is not those valves actual names).

As you can see my vacuum water valve was leaking bad (I actually previously capped off the heater core from the engine bay due to this) and everything just looks old and corroded, and shouldn't be left unadressed.

Anyways it is no secret these parts are no longer availabe. I have done lots of forum digging and found NAPA 660-1000 can be used to rebuild the temperature control water ****. However, the vacuum water **** is still a loss for how to pull apart and restore (might be too rusted anyways). Then there comes the weird temperature control thing (has a copper wire going into the heater box) attached to temperature control valve that seems functionless.

My question to you is... Is it worth the hassle to try and source parts for these or completely restore with replating stuff and finding seals etc.

Or is there a known and cheaper/better method on how to just improve the system and ditch these valves, but leave the rest of the system relatively unmodified. 

Also wondering if the brassworks heater core is worth the price, or if I should just get the SPECTRA PREMIUM 94741 from a ford escort and save some $.

Any advice is amazing, especially if you have done the work on your Z!

 

 

 

[Yarb]

@Av8ferg sent his off and had it rebuilt.

[ckurtz2]

@Yarb do you know were he sent it to? And does it refer to the valves or the heater core.

[Av8ferg]

Go to page 18 on this link.   I discuss all my issues with my 1977 HVAC stuff, including heater core modification (thanks CaptainObvious) and the Heater Control Valve refirb.   

It was a quick turnaround for this, maybe 7 days.  I looked everywhere,  you will not find an OEM heater core or control valve anywhere so don't bother, I spent hours looking.  This was my only real option.  

 

 

http://www.heatervalves.net

[ckurtz2]

That forum is a god send. THANK YOU

        so that guy in WI was able to rebuild both your vacuum water valve and the temperature valve it seems? In addition, do you know where I could get my heater core outlet cut and bended like you said you did? 

Also could you direct me to @Captain Obvious post that you keep referencing in your thread about the heater core?

 

Edited June 1, 2023 by ckurtz2

[Av8ferg]

Yes, Joe in WI rebuilt both. He was super nice and did quality work.

The heater core is an aftermarket one I got on Amazon. Was $38
To rebuild my old one I was quoted $450 so no thanks.

This heater core requires minor mods to the heater box.

https://www.amazon.com/gp/aw/d/B000C7TTBM?psc=1&ref=ppx_pop_mob_b_asin_title

The lines needed to be cut and swaged. Not sure if this kit would work. I had a good friend from the forum so it for me.

https://www.amazon.com/Copper-Swaging-Tool-Expander-Conditioner/dp/B0BGDV2WRL/ref=mp_s_a_1_10_sspa?keywords=swaging+tool&qid=1685735219&sr=8-10-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUExU0dDUUdIVDMxVDRFJmVuY3J5cHRlZElkPUEwMjgwNDUwMkE3TTdZMUs2UVJFTCZlbmNyeXB0ZWRBZElkPUEwNTc4NjM4MUlFQTBDTjFOSzVYMyZ3aWRnZXROYW1lPXNwX3Bob25lX3NlYXJjaF9tdGYmYWN0aW9uPWNsaWNrUmVkaXJlY3QmZG9Ob3RMb2dDbGljaz10cnVl

As far as CaptainObvious’ link, I’ll need to search that when on a computer, on my phone right now.

[Captain Obvious]

Here's the link in question:
https://www.classiczcars.com/forums/topic/56726-heater-core-alternative-escort-core-into-260280/

 

[ckurtz2]

You guys are great! Thank you:)