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I often reference Alan71 photos for accurate wire/hose routing. In this case, I found a conflict in his photos. Does the heater hose go up and over the fuel line, or under the fuel line?
The hose I am replacing went up and over, but it was a replacement hose and not necessarily correct.
FWIW, in the "incorrect" picture, the wiper door mechanism, ignition shielding and a handful of other things aren't on yet so I'm guessing that was "in-process" (also no date info on in the file so I can't tell but it's the only single one I see with the fuel line that way)
M
Thanks Mooser and DKM-106. I came across some photos of a 72 NCRS 5-Star Bowtie car, and the heater hose is going over the fuel line, so I guess that's how I'll leave it for now.
I appreciate the feedback.
im in the middle of an engine bay resto. I’m not after a 100% correct result, more like 90-95%. The one thing I changed was the upper heater hose manifold connection. I just didn’t like the way it kind of went up and over the valve cover, so I used a 90 degree hose connector to replace the factory unit. I plan to install the fuel line later this week. See how it works out.
Some photos of unrestored originals. First 1970 then a 1972 on the 72 as you can tell you can see the hose but over the fuel line. final photo is the mileage on the 1972 the 1970 has less then 10K mileage. These Corvettes are original unmolested the 1970 is a 5 Star Bowtie and the 1972 also would become a 5 Star Bowtie.
I think it depended on 'who' did that assembly job on the day the car was built. There was a "plan" defined by the AIM. But sometimes folks would 'do their own thing' if it made the job easier or faster for them. I have seen that hose routed both "over" and "under" the A/lC compressor. I have never seen the hose run "under" the fuel line.
I have never seen the hose run "under" the fuel line.
I've been thinking about this post along with my own routing challenges of late. I think one of the determining factors is the order of assembly. The engine and chassis components were a complete assembly when the body and its components were lowered onto it. The fuel pump, line, and carb would already have been installed when the time came to connect the heater hoses. Logically speaking, and as long as the components are positioned correctly, the hose would go over anything else already assembled. The problem with looking at photos of current engine bays is that you don't know if the fuel line has been changed out and may have a different shape than original. None of the repro steel lines I've gotten have mirrored the "tightness" of the original lines I've replaced.
I've been thinking about this post along with my own routing challenges of late. I think one of the determining factors is the order of assembly. The engine and chassis components were a complete assembly when the body and its components were lowered onto it. The fuel pump, line, and carb would already have been installed when the time came to connect the heater hoses. Logically speaking, and as long as the components are positioned correctly, the hose would go over anything else already assembled. The problem with looking at photos of current engine bays is that you don't know if the fuel line has been changed out and may have a different shape than original. None of the repro steel lines I've gotten have mirrored the "tightness" of the original lines I've replaced.
Very good point! I'm thinking that Mooser was right. Alan71's photos show 2 different fuel lines as well, so the heater hose that's routed "under" the fuel line must have been a temporary set-up. I don't doubt that cars left the factory with a variety of things installed differently based on who was working the assembly line. I'm sure everyone had their short cuts.
"Up and over" it goes!
Last edited by fastimes; Oct 27, 2020 at 10:01 AM.
judging by the pics.. i would route as the fuel line allows.. seems different routings allow or not allow how the steel line is ran? are they 2 different lines?
judging by the pics.. i would route as the fuel line allows.. seems different routings allow or not allow how the steel line is ran? are they 2 different lines?
Looks like Alan had two different fuel lines in these examples
I think the first one was not a reproduction part; I'm guessing that he may have made that one. And, as the picture shows, he probably wasn't happy with the protruding fuel line and the 'odd' routing of the heater hose. The later shot shows a 'proper' fuel line configuration and the 'over-the-top' routing of the hose.
Heater Hose routing
