A/C Hose Routing

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Gray035
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A/C Hose Routing

Postby Gray035 » Mon May 15, 2017 11:58 am

I am in the process of putting together an AC system in my '68. I acquired an older dealer evaporator unit. Here's a pic. Image

For everything else I'm going to use modern components. I got one of these brackets from a another user on this forum, and I plan to use a Sanden type compressor.
Image

What I would like to know is if there are good considerations for routing the AC hoses through the firewall. Has anyone ever used a bulkhead like this?
Image
Or is it easier just to route the entire hose through the firewall? Any pics of ideas would be much appreciated.
1968 F-250 Camper Special

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sargentrs
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Re: A/C Hose Routing

Postby sargentrs » Mon May 15, 2017 4:59 pm

I like those bulkhead and intend on doing something similar when I install mine. This writeup (thanks Keith) shows you where the original factory AC hoses were routed through the firewall.
http://www.fordification.com/tech/factory-AC.htm
Randy
1970 F100 Sport Custom Limited LWB, 302cid, 3 on the tree. NO A/C, NO P/S, NO P/B. Currently in 1000 pcs while rebuilding. Project thread: viewtopic.php?f=22&t=59995 Plan: 351w, C4, LSD, pwr front disc, p/s, a/c, bucket seats, new interior and paint.
1964 Ford Fairlane 500. 289/Cruise-O-Matic, A/C, P/S.

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Re: A/C Hose Routing

Postby Gray035 » Tue May 16, 2017 10:23 pm

I wonder if anyone on here has some pictures or info about where they placed the bulkhead. I'm trying to figure out the best place to put it.
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sargentrs
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Re: A/C Hose Routing

Postby sargentrs » Wed May 17, 2017 4:46 am

Factory location was approximately here (red circle in 1st photo).
BulkheadLocation.jpg
ac_firewall-holes2.jpg
Heater hose routing is close to where the old heater hoses came through the firewall. Should be dimpled where they will need to be drilled and the old ones should be plugged.
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Randy
1970 F100 Sport Custom Limited LWB, 302cid, 3 on the tree. NO A/C, NO P/S, NO P/B. Currently in 1000 pcs while rebuilding. Project thread: viewtopic.php?f=22&t=59995 Plan: 351w, C4, LSD, pwr front disc, p/s, a/c, bucket seats, new interior and paint.
1964 Ford Fairlane 500. 289/Cruise-O-Matic, A/C, P/S.

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Canonman67
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Re: A/C Hose Routing

Postby Canonman67 » Sat May 20, 2017 4:57 pm

I used the same bracket and ran the lines under the inner fender. Image

Image

I put the drier in front of the core support. Image

Making a few modifications so the hoses would lay flat. Image

I still have to make a guard to protect them but was distracted by a leaky rear main seal.
Looking at your evaporator unit you would be able to use the bulkhead fittings at the firewall also. I used a newer model and the fittings are almost right on the firewall which is why I ran the hoses through. In the next photo you can see the lines down low at the front of the engine. Image

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Re: A/C Hose Routing

Postby Gray035 » Mon May 22, 2017 12:23 pm

I have found that there are two types of two-port bulkhead readily available. One where both the ports are the same size (10 AN); and one where the ports are different sizes (6 AN and 10 AN). Does anyone know the use of each application?

I'm pretty sure that the Sanden compressors come with two different sized ports, so my initial thinking is that the bulkhead should probably also have two different sizes, but I'm not sure.
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Canonman67
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Re: A/C Hose Routing

Postby Canonman67 » Sat May 27, 2017 2:55 pm

Size 6 is the line from the condenser through the drier to the evaporator, size 10 from the evaporator to the compressor, size 8 from the compressor to the condenser.

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Re: A/C Hose Routing

Postby Gray035 » Thu Jun 01, 2017 2:03 pm

Canonman67 wrote:Size 6 is the line from the condenser through the drier to the evaporator, size 10 from the evaporator to the compressor, size 8 from the compressor to the condenser.


Did you use any connectors that had service ports in them? Or are the ports on the compressor accessible with the bracket we are using?
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tylerb43
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Re: A/C Hose Routing

Postby tylerb43 » Mon Jun 05, 2017 6:51 am

Gray035 wrote:I have found that there are two types of two-port bulkhead readily available. One where both the ports are the same size (10 AN); and one where the ports are different sizes (6 AN and 10 AN). Does anyone know the use of each application?

I'm pretty sure that the Sanden compressors come with two different sized ports, so my initial thinking is that the bulkhead should probably also have two different sizes, but I'm not sure.


The two #10's are for your heater hoses. The #6 & #10 are your input and output from the evaporator.

Here's where I located my bulkhead fitting, fyi.

Image

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Canonman67
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Re: A/C Hose Routing

Postby Canonman67 » Wed Jun 07, 2017 11:00 pm

I put the service ports by the compressor.

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Re: A/C Hose Routing

Postby Gray035 » Mon Jun 19, 2017 2:22 pm

tylerb43 wrote:
Gray035 wrote:I have found that there are two types of two-port bulkhead readily available. One where both the ports are the same size (10 AN); and one where the ports are different sizes (6 AN and 10 AN). Does anyone know the use of each application?

I'm pretty sure that the Sanden compressors come with two different sized ports, so my initial thinking is that the bulkhead should probably also have two different sizes, but I'm not sure.


The two #10's are for your heater hoses. The #6 & #10 are your input and output from the evaporator.

Here's where I located my bulkhead fitting, fyi.

Image


Where did you get the aluminum tubing that connect to your condenser? All the hose kits that I've found have short little tubing connectors. Did you have to bend the tubing? Or did they come pre-bent from somewhere?
1968 F-250 Camper Special


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