Re: '71 440 HP VAPOR SEPARATOR experts please!
[Re: Morty426]
#2402349
11/12/17 02:39 AM
11/12/17 02:39 AM
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Joined: Jul 2005
Posts: 38 Western US
Furious440
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That's my understanding too from what I read in the 1971 parts catalog and chassis manual. I am replacing the fuel sender, sock, four rubber hoses and ground strap. However, many have encouraged me to put a universal 5/16" filter between the tank and pump. I guess as an extra ounce of prevention to protect a restored carburetor. Does anyone else do this? Why did they not use a filter on the B/RB cars when they did on the small V-8 & slant six cars?
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Re: '71 440 HP VAPOR SEPARATOR experts please!
[Re: Furious440]
#2402681
11/12/17 07:36 PM
11/12/17 07:36 PM
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Furious440
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Okay... So I bought a reproduction vapor separator off ebay. The nipple on it that goes to the vent hose appears to be the correct size. It has a very tiny opening as well. I have not measures it yet. Do I need to worry about the orifice???
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Re: '71 440 HP VAPOR SEPARATOR experts please!
[Re: Furious440]
#2403730
11/14/17 10:34 PM
11/14/17 10:34 PM
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Joined: Apr 2016
Posts: 356 Greenwood Lake, NY
fuelishnsilly
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I don't know if the 71 style is the same as the 69 or not but I put one on my roadrunner and I ended up soldering up the return line fitting and then hand drilled the fitting back open to the correct opening size.
inherited a 69 roadrunner from my grand pop.
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Re: '71 440 HP VAPOR SEPARATOR experts please!
[Re: Furious440]
#2403849
11/15/17 03:53 AM
11/15/17 03:53 AM
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Joined: Jan 2003
Posts: 27,421 Balt. Md
383man
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The opening of the nipple to the vapor return line on my reproduction separator is 1/16".
Is this OK? Well 1/16 is .0625 so it should work fine as the factory hole was about .060. Ron
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Re: '71 440 HP VAPOR SEPARATOR experts please!
[Re: Furious440]
#2404587
11/16/17 07:36 PM
11/16/17 07:36 PM
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Joined: Feb 2006
Posts: 267 New Jersey
69Chrgr
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I thought Franks had the screen, and the correct hole? I bought one from him for my 69 440 thinking it was, its already installed. I broke the cam in on a run stand, so I wouldn't have seen any problems from the hole being too large yet.
Duane
Last edited by 69Chrgr; 11/16/17 07:36 PM.
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Re: '71 440 HP VAPOR SEPARATOR experts please!
[Re: Furious440]
#2404714
11/16/17 11:55 PM
11/16/17 11:55 PM
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Furious440
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Thank you every body for your input. I guess I will know if there is a problem after I run the motor. The tattle tale I assume will be raw fuel exiting the vapor return nipple. Were these ever available in the auto parts stores or were they just dealer only???
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Re: '71 440 HP VAPOR SEPARATOR experts please!
[Re: biggE]
#2404897
11/17/17 11:39 AM
11/17/17 11:39 AM
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Joined: Feb 2006
Posts: 267 New Jersey
69Chrgr
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On ebay JS Brown or 521 Restorations sells the one that will work. His listing has a diagram of the separator. There are ones being sold that the vapor return size hole is to large and this allows gas to run back to the tank instead of vapor. I do know people that block the tube off which does eliminate the issue on the bad ones. They are suppose to be a return line, the system is suppose to work so that if you return fuel from a .060 line, it wont stay stagnant,heat up and vapor lock. when the extra supply is needed at the carb, it is easier to travel thru a 3/8 line than a .060, once the needle closes or cycles, it becomes a return line again. same as a modern fuel system. if the hole is too big, it will starve the carb. Duane
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Re: '71 440 HP VAPOR SEPARATOR experts please!
[Re: Furious440]
#2405864
11/19/17 11:20 AM
11/19/17 11:20 AM
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Posts: 6,406 Abilene, Texas
fastmark
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I bought some from rock auto and the return line hole is too big. I was going to modify them and make the hole to match my NOS one. I use a filter before the pump anyway. They were cheap. I bought one from year one and installed it before I checked the hole. I bet it is too big as well.
Last edited by fastmark; 11/19/17 11:21 AM.
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