F Head heater vacuum fitting

Ok guys I need some help. I've been to 3 auto parts stores, one hardware store and looked online for the parts with no luck. I'm looking for the little 1/8 inch tube and reverse flare nut that comes from the "T" off the manifold as seen here

I looked at what I believe in an original jeep and it has the same set up. Anyone know where I can find a fitting and some 1/8 inch line or one already made up?

Thanks

 

Brake lines have inverted flares. Buy ready made or make your own.

But 1/8 inch? Perhaps fittings for oil pressure gages?

 

what is that used for. Mine goes from the pvc directly into the head/intake. No tee fitting. Where does the 1/8" tube go?

 

The 1/8 inch line goes to the heater control. It appears to be the same as a brake line and that's the path I already tried, but I cant find a reverse flare or line that small. Any other thoughts or ideas?

 

McMaster-Carr or Grainger. Industrial suppliers. Both have on-line catalogs. Otherwise I might look into aircraft or auto racing components.

 

I'd use a brake line or equivalent fitting, run the hose inside the cab, then reduce it down to what you need with a nylon fitting to the smaller size. No one but you would ever know............

 

Mine doesn't have a heater. So I am probably talking through my hat, but if that is the T fitting on the drivers side of the block, one goes to the PCV and the other goes to the bottom of the dual-chamber fuel pump. Or if you don't have the dual chamber pump, it goes to hose ( for flexibility) through a fairly good sized hole in the firewall, then another in the dash to either a hardline and up to the vacuum operated windshield wipers, or up to a T and then to the wipers. An installation kit for a mechanical oil gauge is the same size. The one I got from Checkers (now O'Rielly's) auto parts had enough copper line to put the gauge in the tail gate.

 

Looks like you can get the tubing from McMaster-Carr. The flaring tools for 1/8" don't appear to do a double flare. Since it's a vacuum line it propably doesn't need to be. My heater appears to operate by opening and closing the water line to the heater by way of a cable. These parts are still in boxes.

 

Pricey but here you go. http://www.speedwaymotors.com/steel-45-degree-inverted-flare-brake-line-kit,999.html

The fitting itself is weatherhead # 105x2

 

There are both vacuum guage and oil gauge kits on that site, mechanical, that are bunches cheaper. And easier to work with.

This one will do exactly what you want to do: http://www.speedwaymotors.com/Gauge-Tubing-Kit,4170.html

 

Plastic works....for awhile.

 

["This one will do exactly what you want to do: http://www.speedwaymotors.com/Gauge-...-Kit,4170.html"]

I believe he needs inverted flare, not compression fittings. I found this with one click, there must be more. <http://fittingsandadapters.com/inflartubnut1.html>

 

Correct Pete. I did a quick search when I looked it up. But this fitting should be available at NAPA #105x2 which is a weatherhead inverted flare tube nut for 1/8" tube. As for steel pipe I don't know where to look other than going with copper.

 

Ya would think if those fittings will hold 60 psi of oil pressure, that they would handle 22 inches of vacuum with no problem. But that is just me.

 

I agree! But plastic is not a strong against physical damage etc. I have had a plastic oil gauge tube break from stress. Copper also is more susceptible to vibration fatigue than steel - that's why it is not used for brake tubes.

For holding vacuum even a rubber tube works, as we know from wiper tubing etc.

 

Thought they were a type of nylon, but ok.

 

Thought they were a type of nylon, but ok.

Although, remembering back, the nylon gets brittle after time. Have no idea how long, but I had to replace the tubing between the block and the gauge about four years ago. I do not know how long it was there because it was on the JEEP when I got it back in 2006.