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ancient vacuum lines... |
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tfhofstad
AMC Apprentice Joined: Jul/28/2007 Location: California Status: Offline Points: 50 |
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Posted: Feb/01/2023 at 3:19pm |
I have a 80 Concord with the GM 2.5 and the miles of black spaghetti are rock hard and leaky. By chance does anyone know the size(s) used? I want to buy enough to replace all the vacuum hoses but there seems to be sae and metric sizes as well as rubber and vinyl/silicone. Thanks for any info
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***68 Ambassador SST
***79 Concord 25yr edition ***80 Concord D/L |
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ramblinrev
Moderator Group Joined: Dec/28/2008 Location: Wisconsin Status: Offline Points: 11542 |
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You are going to have several sizes! Just buy a bunch and good luck!
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74 Hornet Hatchback X twins (since 1977)
62 American Convertible (still worth the $50 I spent in 1973!) AMCRC #513, AMO #384 70 AMX 360 4-speed (since 1981) |
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FSJunkie
AMC Addicted Joined: Jan/09/2011 Location: Flagstaff, AZ Status: Offline Points: 4742 |
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It's probably mostly run with 1/8-inch (dash-2) nylon plastic line with rubber hose pieces used for connections at the ends.
Most any auto parts store 1/8-inch nylon tubing for medium and heavy duty truck air brake use. It's cheap and is more reliable long-term than running rubber hose everywhere. Looks cleaner, too. You can bundle it and make it look neat. Otherwise, the rubber lines will mostly be 5/32-inch with some 1/4-inch mixed in. PCV is nearly always 3/8-inch. Silicone hose will last a whole lot longer than rubber. Like, 50 years longer. AMC actually used quite a bit of silicone hose as OE. You can buy it at auto parts stores. Gates makes it. It's orange.
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1955 Packard
1966 Marlin 1972 Wagoneer 1973 Ambassador 1977 Hornet 1982 Concord D/L 1984 Eagle Limited |
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Trader
AMC Addicted Joined: May/15/2018 Location: Ontario Status: Offline Points: 6909 |
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And remember to replace one at a time. DON"T remove them all a once or you will be hours with the TSM that in some cases, will still leave you questioning.
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MIPS
AMC Nut Joined: Mar/11/2019 Location: Kamloops, BC Status: Offline Points: 347 |
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I'm fairly certain that when I re-tubed the Eagle I only used two different sizes and a bit of fuel-rated line for the carb vents and PCV. I do not have those sizes written down in front of me.
One thing I do remember was that there was at least one inside diameter I could not source, but determined that unless I was running lengths ten feet long the smaller diameter tubing I ordered did not cause flow restriction issues. |
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