A Replacement for a NLA Fuel Line
#61
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Originally Posted by the flyin' scotsman
The steel braid protects the outside of the hose; can't see how there's any prevention of interior collapse......
That’s not necessarily true. The braiding also guides and keeps the hose from internally collapsing. For the hose to collapse internally, the outside would have to also deform and the braiding keeps the outside from deforming.
#62
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Originally Posted by Bill Ball
The loop that goes between the dampner and FPR is high-pressure. That's the main piece at issue in this thread. The original S4+ version appears to be a semi-rigid molded core.
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#63
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Originally Posted by Imo000
That’s not necessarily true. The braiding also guides and keeps the hose from internally collapsing. For the hose to collapse internally, the outside would have to also deform and the braiding keeps the outside from deforming.
#64
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Originally Posted by H2
An engineer could verify, but I'm pretty sure that Imo000 is correct. Makes total sense.
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There's enough interest and folks involved Harvey I'm sure we'll get it figured.
Has anyone cut the U shaped hose open and examained it for structural make up?
#66
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And why is circumventing the idiotic engineering to route the hoses this way in the first place not a good idea?
#67
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Originally Posted by Sterling
Why coudnt we just have the material analyzed... for the factory construction, it looks to have a bit of a bend/shallow kink when new. I personally think the reasoning for the hose and the bend is for installation and removal. If it was a solid line, you would have to crack the bolts for the mounts to the dampners and move them outward.... it appears to be the same plastic type compound for the return line that goes over the passenger cam cover...... if we knew exactly what it was, then like everything else I bet there is a source for it. the bugger of it going to be shaping it and getting it onto the metal fittings. (sorry for the bugger reference... been hanging out with roger too much lately.... at least we have him saying Ya'll now which is humorous with an english accent)
#68
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The orginal fuel hose, as Rog100 and others have pointed out, is a "hose within a hose"....perhaps the outer hose is to give some leeway support for bending....similar to the outer SS covering shown above?
Also, I suspect that the brass "crimp" fitting on the old hoses appears to be loose on dissection because the hose has shunk with age. I have a new hose and it's tight.
H2
Also, I suspect that the brass "crimp" fitting on the old hoses appears to be loose on dissection because the hose has shunk with age. I have a new hose and it's tight.
H2
#69
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I just wanted to make sure of something before I responded - so it has taken me a moment to find another of the "U" lines and cut it up. There is no plastic reinforcement substrate within as has been said on this post. I did not think so (I have rebuilt a coule) but just wanted to look again to be sure.
Again - there is no plastic inner liner in that U-shaped hose in any of the ones I have cut up.
Again - there is no plastic inner liner in that U-shaped hose in any of the ones I have cut up.
#70
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Originally Posted by Dr. Phil
Buddy, sumthin's goin' on here ... You godda look DEEP inside your fuel hoses ... and ask yourself .... I mean what, what ... what is it exactly that we're lookin' at here .... I mean ... there's just no two ways aboudit .... You know whaddamsayin? Cause ... cause change comes from within ... I can sit here and redesign your fuel hoses for you all day ... and .... and in the end ... the answer lies with you .... It's up to YOU to become less rigid ... It's up to YOU to take the first step and become more flexible ... to GIVE a liddle ....
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#71
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Originally Posted by Carl Fausett
I just wanted to make sure of something before I responded - so it has taken me a moment to find another of the "U" lines and cut it up. There is no plastic reinforcement substrate within as has been said on this post. I did not think so (I have rebuilt a coule) but just wanted to look again to be sure.
Again - there is no plastic inner liner in that U-shaped hose in any of the ones I have cut up.
Again - there is no plastic inner liner in that U-shaped hose in any of the ones I have cut up.
Either way, it doesn't matter to me as long as a suitable substitution is found.
Harvey
#72
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Originally Posted by Carl Fausett
I just wanted to make sure of something before I responded - so it has taken me a moment to find another of the "U" lines and cut it up. There is no plastic reinforcement substrate within as has been said on this post. I did not think so (I have rebuilt a coule) but just wanted to look again to be sure.
Again - there is no plastic inner liner in that U-shaped hose in any of the ones I have cut up.
Again - there is no plastic inner liner in that U-shaped hose in any of the ones I have cut up.
Perhaps for absolute clarity Roger or Heinrich who have multiple models could post some pics.
#73
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85-86 on left, 87-up on right
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#74
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Thx Dave...........now how do we build the version on the right?
Or.......can we use the 85-86 version on newer cars; seems like they'd be easier to replicate.
Or.......can we use the 85-86 version on newer cars; seems like they'd be easier to replicate.
Last edited by the flyin' scotsman; 04-05-2007 at 08:30 PM. Reason: another thought?
#75
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Originally Posted by Carl Fausett
Again - there is no plastic inner liner in that U-shaped hose in any of the ones I have cut up.
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Glenn