Author Topic: 67 heater hose routing 289 A/C thermactor  (Read 130 times)

Offline 67gta289

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67 heater hose routing 289 A/C thermactor
« on: November 05, 2017, 07:59:02 AM »
Looking for information on correct routing of heater hoses on 67 289 A/C thermactor.

I searched through several posts and knocked on the proverbial door a few times, but I'm left needing more.

From this post (http://www.concoursmustang.com/forum/index.php?topic=10157.0) there is a picture that I've highlighted and attached here.

Realizing of course that it is a Dearborn non-thermactor car, but it is the closest thing I've found.

I have three questions:

1. On the supply hose I see that the carb choke spring (yellow box) has the bracket to contain the hose, but the hose appears to have been pulled out.  Should the hose run through it?  If so, would it continue over or under the PCV hose on its way to the heater shut off valve?

2. On the return hose, as indicated by the yellow arrows appears to be items that look like clamps.  Looking again, I see what could be two small vacuum lines or wires, and what looks like clamps could be electrical tape to connect these items together.   If there were no clamps, what keeps the hose from moving and touching the exhaust manifold?

3. Any idea how the routing was influenced by thermactor?  I suppose that the return hose would need to work its way around the air pump.  Any pictures?

The second picture is from the MPC illustrations book.  It does not depict a hose running along the face of the choke spring.

Thanks, John
John
67 289 GTA Dec 20 1966 San Jose
MCA 74660

Online ruppstang

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Re: 67 heater hose routing 289 A/C thermactor
« Reply #1 on: November 05, 2017, 08:46:25 AM »
I have a file that has pictures of Pete Morgan's 67 GTA 289 /W AC and Thermactor.  I do not want to post them with out his permission. Hopefully he will be a long. Is you car a 2V or a 4V?
 Here is a picture of our 67 GTA 2V with AC with out thermactor

Offline 67gta289

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Re: 67 heater hose routing 289 A/C thermactor
« Reply #2 on: November 05, 2017, 08:51:32 AM »
Thanks Marty.  C code 2V
John
67 289 GTA Dec 20 1966 San Jose
MCA 74660

Offline Deuce

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Re: 67 heater hose routing 289 A/C thermactor
« Reply #3 on: November 05, 2017, 01:38:36 PM »
Attached is a pic taken from the 1967 Ford Preliminary Shop Manual, showing a drawing with the heater hose routing for non-Thermactor 289.

As we know, it gets crowded in there when the Thermactor hoses and AC hoses are layered on top of everything else.  Don't know if it's completely correct, however on my AC Thermactor car (C-code) with the ignition coil mounted on the intake manifold between the right valve cover and the carburetor:

1) I've kept the heater hose routing consistent with the drawing, with the return hose from the heater core routed over the PCV hose, through the choke bracket and to the forward nipple on the water pump.  Passing under the PCV hose is the Thermactor hose that is routed aft from the tee to the air gulp valve at the rear of the intake manifold.

2) The heater core inlet hose from the intake manifold nipple to the hot water valve on the cowl (AC car) is kept away from the exhaust manifold by routing outboard, between the air cleaner heat shield and the inner right shock tower.   

3) I can try to send a pic for how it looks on my car.

Here is an item from six months ago on the forum, about a 66 Thermactor car.  Which is one of the reasons I've kept the heater hose routing consistent since there's not much difference between 66 and 67 Thermactor systems:  http://www.concoursmustang.com/forum/index.php?topic=15982.0
« Last Edit: November 05, 2017, 02:21:43 PM by Deuce »
Deuce
1967 C-code vinyl Hardtop, C-4, AC, PS, T/E; San Jose Nov 30 1966, DSO 71
2008 Premium GT Coupe, Nov 2007 build

Offline 67gta289

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Re: 67 heater hose routing 289 A/C thermactor
« Reply #4 on: November 05, 2017, 06:07:02 PM »
Bob M (19667Bob) sent me a message pointing to the Electrical assembly manual page 83.   This provides a few answers and clues.

1. For the 289-2V and 289-4V the heater hose runs from the intake manifold pressure connection along the outer edge of the valve cover (engine side of the air cleaner heat riser) to the heater valve (pass side) and then from the heater valve to the passenger side heater core connection.

2a. 289-2V only: from the driver's side heater core connection up over the valve cover and through the bracket for the choke spring, passing over the intake manifold connection and down to the water pump suction connection.

2b. 289-4V only: from the driver's side heater core connection along the valve cover (engine side of the air cleaner heat riser), next to/below the supply hose, crossing over the front of the head and down to the water pump suction connection.

This is a later revision that lists the pre-formed hoses.

There is a detailed view of heater hose routing with thermactor.  It is the 4V version only so for the 2V there is some interpretation required.

There is a
John
67 289 GTA Dec 20 1966 San Jose
MCA 74660

Offline J_Speegle

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Re: 67 heater hose routing 289 A/C thermactor
« Reply #5 on: November 05, 2017, 10:06:22 PM »
Not many original cars that have not had their heater hoses replaced and not sure how far I trust factory drawings showing what some illustrator or engineer thought would/should work.  But can feel the "fun" you've been experiencing

With that said. Could not find an example that suggested that the upper heater hose passed through the bracket at the carb as designed though I guess it could be forced. In most cases the heater hose from the intake ended up being the lower hose as they both traveled rearward towards the heater and control valve. This was likely due to the new location for the ignition coil and that odd intake water neck and ported vacuum switch combination used that year. If, one of the hoses did run that high it would have likely been the once from the water pump and then would be high enough to need to run under the PCV hose to preform a sloping mild curve

The PVC hose appears on the examples I have of passing over the two large Thermactor hoses on their way to the back fire valve but it doesn't look like the upper heater hose being routed that high up ) especially if it didn't pass through the carb bracket

I've never seen any straps, hoses nor brackets used to hold either heater hose between the engine and the heater or control valve

None of the hoses appear to have been left long enough to sag or hang near the exhaust manifold on the passenger side

Just what I found and can work out through the pictures

As far as Pete's car.... been allot of years since that car was built and i can't recall what we discussed or suggested back then
Jeff Speegle

Anything worth doing is worth doing concours ;)

Offline Deuce

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Re: 67 heater hose routing 289 A/C thermactor
« Reply #6 on: November 06, 2017, 10:11:42 AM »
These clues are very helpful.  Confirms that the hose from the intake manifold connection runs to the heater valve (passenger side), and the hose from the heater core (driver's side) runs to the water pump connection.

May require some trimming of heater hose lengths and a little bit of rerouting for both Thermactor and heater hoses to make it closer to correct.

Good info!

Thanks,
Deuce
1967 C-code vinyl Hardtop, C-4, AC, PS, T/E; San Jose Nov 30 1966, DSO 71
2008 Premium GT Coupe, Nov 2007 build