Vacuum reservoir?

[Norwester]

Ok....I've been gathering fittings and hose to install a vacuum fitting in the manifold and run hoses to the reservoir and the HVAC system. Nothing is easy. I bought a fitting with a right angle barb and I can't install it because there is a hard line going from the carb to the brake booster that's in the way. Won't allow me to install the fitting.

Is there another vacuum line that I can tap into or should I pick up a fitting with a straight barb?

 

[Georgeb]

Ok....I've been gathering fittings and hose to install a vacuum fitting in the manifold and run hoses to the reservoir and the HVAC system. Nothing is easy. I bought a fitting with a right angle barb and I can't install it because there is a hard line going from the carb to the brake booster that's in the way. Won't allow me to install the fitting.

Is there another vacuum line that I can tap into or should I pick up a fitting with a straight barb?[/QUOTE

That line would be easy to move temporarily so you can spin your fitting in. It's just a flare fitting and a bracket right.

 

[Norwester]

Yeah, I tried to take it off, thinking I could install the vacuum fitting and then put it back. I put a wrench to it and the hard line started to twist. I stopped before it did any damage. I did find a 3/8 fitting with a straight barb online that ought to work and also a low profile fitting that's outrageous in cost ($30.00). Just looking for a better way before I send away for more parts.

On a good note, I got under the dash and was able to see the control valve. I found the gray line and it led me right up to the opening in the firewall. It had a piece of hose still attached to it and was lying just inside the opening. I taped it to a piece of wire and fished it through from the engine side.

I'm still missing the piece of duct that runs under the column but found a fellow that has one he'll give me.

Making progress

 

[Georgeb]

If I am not mistaken the steel line has a flare and nut and it threads into a fitting that connects to the carb via 1/4" NPT pipe thread. You may need to use two wrenches. One to hold the fitting and one for the flare nut. Unless its rusted tight it should come apart.

 

[Norwester]

That's pretty much what mine looks like. I tried to turn the nut on the steel tube. The fitting in the carb didn't move, only started twisting the line.

I might have to buy the 3/8 fitting with the straight barb. Ought to work.......and it's only $3.00

I'm guessing by your response that you're not recommending tapping into another line.

I do appreciate the input. Amazing what I'm learning as I bring some glory back to this ole girl.

 

[Georgeb]

That's pretty much what mine looks like. I tried to turn the nut on the steel tube. The fitting in the carb didn't move, only started twisting the line.

I might have to buy the 3/8 fitting with the straight barb. Ought to work.......and it's only $3.00

I'm guessing by your response that you're not recommending tapping into another line.

I do appreciate the input. Amazing what I'm learning as I bring some glory back to this ole girl.

Oh, sure you could tap another line. You just need to tap into a manifold vacuum or non-ported vacuum. Dont forget your check valve.

 

[Norwester]

I'll have a look and see where the non-ported fitting is on my Edlebrock

 

[Norwester]

Time to pay attention to the wife.......sigh

 

[Georgeb]

Yeah, I forgot you have an Eddy.

 

[Norwester]

Alright! Success is mine....or ours if you consider the help I received. I've been involved with several issues at once but I kept coming back to my HVAC problem.

I finally got the vacuum into the dash area but when I cranked it up, I only had heat, no defrost. I hate to think how many hours I spent looking at the various threads that showed diagrams of the system

I finally pinpointed the problem. The flapper controlled by the rod was not opening....the one that has the white plastic part that apparently is known for breaking. When I selected "defrost", I could see the rod was moving ever so slightly. Screwing around with it, I found that the door was jammed up. Somebody had pressed on the door and wedged it into the housing. I fooled with it and got it to release. When I hit defrost, the door opened and closed as it should.

I only have to reattach the ducting and I'm good to go.

I want to thank you fellas for all the information.

The only larger project I have in front of me is replacing both of the wing windows. I have the parts, only need to get to it.

 

[DoubleDingo]

Glad you got it fixed. Sometimes it is just the simplest thing that causes such a big headache.

I need to remember this thread when I get into my system. Luckily I have heat and defrost, but there is some good info in here for tracking down other stuff.