Smooth Firewall With Vintage Air

[scf100]

Bringing this thread back up as want to do same in my 70 2WD Blazer and hide bulkhead lines

So what Vintage Air system did you use and can you get lines running to run inside firewall to wheel well them to front?

[6600DURAMAX]

Wanted to revive this post a little with a couple questions in regards to keeping the firewall as smooth as you can

1. How are you mounting the lower AC bracket without drilling through the firewall? The upper looks to mount on the inside cowl piece where it wont be seen.

2. How is the "drain " hose routed if you only have the 4 bulkhead hoses ?

[6600DURAMAX]

thought I might as well add a pic as everyone loves pics

[Jason Banks]

When I did mine, I was going to weld a 1/4-20 screw to the firewall and grind it, but didn't end up doing it and just used a chrome, button head screw instead.

[scf100]

My builder and I figured out a way to run ac lines out the pass side cowl vent under the inner fender to hide the ac lines........
I am using Vintage Air front drive system and got the 90 degree elbows for lines to go staright down for lines to go under inner fender.

[6600DURAMAX]

SCF100- I wish I would have went this route as well- looks great

[6600DURAMAX]

Banks - I agree, thought about some button head stainless ones as last option. Was thinking today of making a 90 degree bracket and using the cowl to hide the bolts

[Jason Banks]

Here's how mine turned out. Spent lots of time making sure everything was flat, then tightening that top bolt sucked the metal in making a depression.

[Jason Banks]

Oh Yah, the factory vintage air hoses make spaghetti. Either get custom ones or have them modified.

[lolife99]

This is my firewall with Vintage Air.
Factory non-A/C box retrofitted by member n2billet.

[6600DURAMAX]

Jason - are you referring to the Vintage Air hoses under the dash ?

Your execution on the button head bolts look very clean

Also - what did you do with your drain ? Is that under the bottom outlet ? I am planning on buying the vintage air bulkhead keep clean look

[Jason Banks]

The underhood looks like spaghetti with the Vintage Air hoses. I wish I had done the bulkhead. Vintage air says the heater hose itself is the seal at the firewall, without the bulkhead. Kind of a joke.

Here's how I did my drain...

[Jason Banks]

If you look at page 14 of the instructions, it gives you an idea how they think the hoses should look.

https://www.vintageair.com/instructions_pdf/751170.pdf

The fittings on my vintage air hoses, had the fittings on the ends clocked in a way that it wasn't going to look near as clean as their drawing.

[6600DURAMAX]

I don t believe I ordered the "engine compartment" hoses from VA - I'll have to open the other box.

Assume the drain hose inside the cab gets hidden by the carpet allowing it to exit that low?

[6600DURAMAX]

Also - when I called VA about the bulkhead they suggested this kit to adapt their barb fitting heater hoses to the bulkhead - I'm not sure why there is so many fittings for just those two connections?

Any one use this kit ??

[Jason Banks]

I'll get you a picture of what I did inside tomorrow.

Figuring out how to adapt to the bulkhead, was one of the reasons I didn't order it...

Looking at that kit I'm not sure which pieces you would use. I couldn't figure out if the back side of the bulkhead was threaded or what was happening. I think I even called them one time and was still unclear, so I just went ahead and drilled the firewall.

[Jason Banks]

Here's what mine looks like inside.

My upholstery guy didn't like how I did it, but I wanted to make sure it drained. He was concerned with it getting kicked or seen. But, you'd have to be very far back to see it from outside and won't see it from inside. Maybe with a K5 that's higher than my lowered truck, it would be more visible.

I did break the little elbow fitting off the vintage air box and had to glue it back on.

[1971Stepside]

I welded a stud inside the firewall for the evaporator to mount to so the firewall would remain clean. If I were to do over I would weld something more substantial instead of just a bolt so it wouldn't flex as much during the install.

[6600DURAMAX]

Wish I would have thought that through a ton more - agree a welded stud would be best. I will try to use the upper cowl and a bracket somehow but not sure that will work - i'll give it a shot. If not a clean polished stainless button head bolt isn't the worst thing

[Grumpy old man]

One of the cleanest routing jobs I've seen is on dayj1 68 short bed , Tap on this link and scroll down to post 18 .

https://www.67-72chevytrucks.com/vbo...d.php?t=821945