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Post by oldsproject on Nov 20, 2009 13:02:40 GMT -5
RAM Z, looking at your finished frame I noticed you only have one fuel line? Mine has two, what's up?
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Post by Big Mike on Nov 20, 2009 14:00:13 GMT -5
RAM Z, looking at your finished frame I noticed you only have one fuel line? Mine has two, what's up? Do you have A/C? If not, it did at one time, A/C cars have a return line in the system.
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Post by oldsproject on Nov 20, 2009 14:13:53 GMT -5
Thanks Mike, it is an AC car. Curious, do you or anyone know why?
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Post by bubbasz1 on Nov 20, 2009 15:24:47 GMT -5
The AC cars have a return line, for the life of me I can't figure out why other than the extra heat from the system making the fuel expand and it has to have a return back to the tank. Thats my mechanical shot in the dark.
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Post by Deleted on Nov 20, 2009 17:40:51 GMT -5
I don't have air and my 66 has two lines. So does the assembly manual. Is this just true for 65?
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Post by RAM Z on Nov 20, 2009 18:06:52 GMT -5
As far was we know!
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Post by BR[] on Nov 20, 2009 18:14:54 GMT -5
Boy do I hate to do this, but all 66's had the return line........ I know, I'm a traitor!
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Post by bubbasz1 on Nov 20, 2009 19:37:24 GMT -5
The AC cars have a return line, for the life of me I can't figure out why other than the extra heat from the system making the fuel expand and it has to have a return back to the tank. Thats my mechanical shot in the dark. Quoting myself here, that's tough. Well made a few phone calls and my mechanical shot in the dark was correct. Return line worked bled off excess gas and fuel that expanded during high heat conditions to try to cure flooding, gas fires, and other difficulties dealing with gas expansion because of heat.
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Post by oldsproject on Nov 20, 2009 20:01:23 GMT -5
The AC cars have a return line, for the life of me I can't figure out why other than the extra heat from the system making the fuel expand and it has to have a return back to the tank. Thats my mechanical shot in the dark. Quoting myself here, that's tough. Well made a few phone calls and my mechanical shot in the dark was correct. Return line worked bled off excess gas and fuel that expanded during high heat conditions to try to cure flooding, gas fires, and other difficulties dealing with gas expansion because of heat. Where else but here can you get this depth of knowledge and help! Wish I'd found you boys much earlier
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Post by Mongoose on Nov 20, 2009 21:49:10 GMT -5
Not to further confuse things... but my '65 Cutlass convertible is an A/C car, and it only has/had a single 5/16 fuel line. So it appears that having A/C was not a definate that you'd have dual lines.
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Post by nickthefish on Nov 20, 2009 22:01:12 GMT -5
And the plot thickens...to be continued.
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Post by bubbasz1 on Nov 21, 2009 8:01:12 GMT -5
Not to further confuse things... but my '65 Cutlass convertible is an A/C car, and it only has/had a single 5/16 fuel line. So it appears that having A/C was not a definate that you'd have dual lines. I'm thinking that since according to Bro all the 66's had them that maybe 65 or during 65 is when they started using them, but who the hell knows. My vert had one, it has no air, I'm good. My post has no air and only has one line, >>> that gets two, the debate moves on.
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Post by bubbasz1 on Nov 21, 2009 8:09:48 GMT -5
Not to further confuse things... but my '65 Cutlass convertible is an A/C car, and it only has/had a single 5/16 fuel line. So it appears that having A/C was not a definate that you'd have dual lines. Something that come to mind, have you taken your car apart, perhaps during it's lifetime the line was replaced and they didn't put the second one back. Do you have an extra plug on the pump or a plugged line at the tank.(shot in the dark of course)
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Post by BR[] on Nov 21, 2009 9:45:37 GMT -5
I think we need to get all the build dates on the dual line cars and see if they were all late builds.
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Post by RAM Z on Nov 21, 2009 9:54:06 GMT -5
I do know the assembly manual shows one line for regular and two for A/C cars. Dated 1964.
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Post by Deleted on Nov 21, 2009 11:41:45 GMT -5
Boy do I hate to do this, but all 66's had the return line........ I know, I'm a traitor! Hi BRO, welcome to the 65 - 66 club!!!
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Post by Deleted on Nov 21, 2009 11:55:37 GMT -5
I have owned 4, 1965 Cutlass A/C cars with the 330. All were single fuel line. Of interest is the clips used to secure the fuel line are dual line capable. The two 442 cars are non A/C with single line. The second line, return, is to prevent the carb flooding issues with high underhood temperatures. I'll check on the build dates for the A/C cars.
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Post by mongoose on Nov 21, 2009 21:20:51 GMT -5
The fuel line frame clips on my A/C Cutlass were also dual line, although the car only had a single line.
We thought that maybe the factory didn't bother to make both a single and dual line clip, and just used the same clip regardless of whether a single or dual line was installed.
It's been a long time since my car had the mechanical fuel pump, but the fuel sending unit was also a single line... so unless someone went to extreme measures to convert from a dual to a single line on an A/C car... it was like this originally.
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Post by Big Mike on Nov 22, 2009 12:52:31 GMT -5
I believe that the dual fuel lines were only on A/C equipped 442's, not Cutlass'. The reason being that there is much less room in the engine compartment between an A-body with the 330 and the 400 engine.
I have a Cutlass with A/C and I will pop the hood and check if it has the dual lines, but i don't think it does. However, in answer to Bro's thought that it may be an early late build addition, my A/C Cutlass is a very early build if I'm not mistaken, I believe it was built in October of November of 64.
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