Re: heater water plumbing

[amcnut@xxxxxxxxxxxxxx]

The 1983 "TSM" is merely a supplement to the 1982 fullsize TSM. They work in tandem with each other---the 83 TSM only covers the "new" or different stuff for that model year. AMC was being cheap again, and figured reusing the 82 TSM would save a few bux. 

On the later models with the heated intake manifold, a heater hose goes from the port on the thermostat housing over to the front port on the intake. From the rear port on the intake, a hose goes across and hooks up to the 4-way heater control valve. Yup, 4-way! Both sides of the heater core attach to this heater valve, which allows coolant to continue to flow through the intake manifold even if the heater valve is closed to keep coolant from the heater core. Of course this valve is vacuum operated. The larger (3/4") hose comes out of the heater core, attaches to this heater valve, then continues from the other side down to the port on the water pump. 

Hope this helps.

Jeff Reeves
Auburn, GA
79 Spirit GT
73 Javelin
72 Javelin SST
69 Ambassador DPL

Date: Mon, 13 Jun 2005 20:28:35 -0700 (PDT)
From: Tom Jennings <tomj@xxxxxxx>
To: AMC List <mail@xxxxxxxxxxxx>
Subject: heater water plumbing
Message-ID: <20050613202110.M860@localhost>

So I bought a 1983 "TSM" for my motor (258), but it's practically worthless.  A flimsy thing with the bare facts and no useful photos! What crap!

Can anyone give me hints on how the water gets plumbed? Is the heater core full-flow? How does the intake manifold get plumbed?

My plan is to find some "Y"'s and plumb the heater and intake in parallel. The 1970 heater has the cable-driven hot water valve.
Did 83 use a hot water valve or was the core full-flow?

I use "Y"s in my LP car, since the water-heated LP converter needs water heating. I figured I'd do the same here.



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