When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Hello,
Getting ready to replace the 3 rubber lines on my stock 1968 ac system.
I've located the barrier hose on line just not sure of the 3 sizes required.
1 hose had been replaced and was marked 5/8 so one is a given.
I'm just not sure what diameter I need for the other two lines.
I am staying with R-12
Thanks,
Marshal
Thanks for the response.
I have purchased from Wilcox in the past and received a nice discount by being a forum member.
The problem is I have a one year wonder, 1968.
Most vendors carry a generic ac hose set for 1969-1972.
In 1968 it was a cross breed from old ideas carried over from the mid year ac system and a first year change.
My hoses are not one piece. The fittings are ribbed and pressed into the hose like the heater hoses. Then are clamped with a special hose clamp.
Aside from a more modern compressor, I am keeping the system stock.
I need to buy the barrier hose by the foot and still need the correct diameters if anyone knows?
Thanks,
Marshal
I'm confused- If your car already had A/C and you're just replacing the compressor/hoses, can't you measure the diameter of the hoses you have currently?
I really don't like guessing.
There are 4 avail hose sizes and I only need 3 and I'm a really bad guesser.
Anyway since posting, I found the correct sizes listed on DocRebuild's site. Good info there.
For any 68 owners, you need 2 ft of 5/8th, 3 foot of 1/2" and lastly 4' of 13/32nds.
The 5/8th goes from the muffler suction side to the bottom of the POA.
The 1/2" hose runs from the muffler to the top of the condensor.
The 13/32nds line runs from the top of the receiver dryer to the expansion valve.
Thought I'd share what I learned.
Since no one else knew there it is
Marshal
Updating an old useful thread. I am replacing my hoses and measured them. I don't know if they are original, but they could be. NCRS judging guide says hoses are to be installed with little to no slack or bends; in one case that is contradictory to the 5/8" hose as indicated below.
5/8” – actually ~50" - muffler suction to bottom of POA - as Doc’s says, there is a ‘long loop behind compressor’ - perhaps to ease installation
AIM Excerpt - 1968
1/2" – actually more like ~31" - muffler to condenser
13/32” – actually more like ~35" - receiver dryer to expansion valve
Ac hose sizes?
