A Replacement for a NLA Fuel Line
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From: Horicon, WI
Everybody else - sorry to get irritated here. Just over-tired and over-whelmed. We made a significant investment in a swadging machine and I thought that would be a GOOD thing to announce and be received as a plus. And YES if you look at the pictures back on page 1, it crimps around the entire diameter of the swage, even better than the uncrimped OEM part.
I'm happy to have Q & A and open dialogue of design ideas. I do it myself.
I'm happy to have Q & A and open dialogue of design ideas. I do it myself.
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From: Seattle
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Originally Posted by Bill Ball
Oh, and as to the kink, here is a photo of the line held approximately as the Supermodel SC configuration compresses the loop. I don't know if DR has redesigned the manifold so the fuel rails are not moved inward, but for other Supermodel SC owners, this could be a problem. The fuel flow is a ring around the fuel rails, so even if this line kinked there still is communication across the front of the rails. The kink is not 100% occluded and the line looks like it not about to split; however, I immediately replaced it with new. This is some tough fuel line material. The earlier fuel line design would appear to be more compatible with having the fittings closer together.
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From: Double Oak, TX
Carl,
I am real sorry if I offended you in any way - that was never my intention.
I read back through my posts and have always been courteous and friendly towards you and your product. I even congratulated you on your product and investment.
I have a passion for our cars and have a real need to replace the U hose on my own cars.
You said you had a solution but were not prepared to back it up with facts, that as an engineer I need, to feel assured that the hose will do what it is supposed to do in the application.
Because of this I continued to search for a solution for myself and the 928 community.
I will not be offering a guarantee as you say but when asked I can reply with a level of certainty that the product is fit for the job in question. I am also not selling an assembly.
Again I apologize unreservedly and only wish you had made your "irritation" known to me two weeks ago.
Roger
I am real sorry if I offended you in any way - that was never my intention.
I read back through my posts and have always been courteous and friendly towards you and your product. I even congratulated you on your product and investment.
I have a passion for our cars and have a real need to replace the U hose on my own cars.
You said you had a solution but were not prepared to back it up with facts, that as an engineer I need, to feel assured that the hose will do what it is supposed to do in the application.
Because of this I continued to search for a solution for myself and the 928 community.
I will not be offering a guarantee as you say but when asked I can reply with a level of certainty that the product is fit for the job in question. I am also not selling an assembly.
Again I apologize unreservedly and only wish you had made your "irritation" known to me two weeks ago.
Roger
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Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission?
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928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission?
George Layton March 2014928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
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I'm thinking we all get irritated and tired once in awhile. No biggie. Rog, I know you'll share the product info with Carl so he can use it in his products if he wants. Carl, Rog is a good guy, like you. And I'm thinking Carl, you can take that U and build a complete hose with it, maybe crimp and not use clamps.
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From: Horicon, WI
I called my Supplier and they were able to tell me this: that is it made by Continental in Germany for Porsche and BMW. This is the OEM HP fuel hose. 215 psi working pressure, 430 psi test pressure, and 850 psi burst pressure. I asked him what the minimum bend radius was and he said "no f&%ng idea".
There are only two suppliers that import this OEM fuel hose from Germany into the US, I am told.
Again, if I am installing it in the same arc as Porsche did, (and I am) and its the same hose Porsche used (and it is) I do not think we need to know this. We are not changing or reducing the bend radius.
Anyway - I made the call, there you go.
There are only two suppliers that import this OEM fuel hose from Germany into the US, I am told.
Again, if I am installing it in the same arc as Porsche did, (and I am) and its the same hose Porsche used (and it is) I do not think we need to know this. We are not changing or reducing the bend radius.
Anyway - I made the call, there you go.
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From: Double Oak, TX
Hi Carl,
After you told us the size and manufacturer I spoke to them and received the spec sheets and the MBR is 60mm on the low pressure and 70mm on the high pressure - which is what you say you are using. See post #100.
Hope that helps your quest.
Best,
Roger
After you told us the size and manufacturer I spoke to them and received the spec sheets and the MBR is 60mm on the low pressure and 70mm on the high pressure - which is what you say you are using. See post #100.
Hope that helps your quest.
Best,
Roger
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From: Horicon, WI
Thank you Rog, good to know, but uneccesary to know unless you are designing or engineering a new fuel line. We are not. Just a repair of a previously engineered part. You use the right replacement hose that has the right specs, and you are good-to-go.
I measured the bend radius of the 85-86 "U" hose (which is what my post was originally about) and it is 70mm. Not surprised. I trust the Porsche engineers to know what the MBR was when they engineered it. They are excellent engineers. Looks like they new this when they designed it (imagine that!)
This is not to say that John Q Public Amateur Mechanic-at-large couldn't grab generic fuel hose #1 from the Autozone shelf and totally screw this up.... and that is I think where ROG got focused. You have to spec and use the right replacement hose.
I measured the bend radius of the 85-86 "U" hose (which is what my post was originally about) and it is 70mm. Not surprised. I trust the Porsche engineers to know what the MBR was when they engineered it. They are excellent engineers. Looks like they new this when they designed it (imagine that!)
This is not to say that John Q Public Amateur Mechanic-at-large couldn't grab generic fuel hose #1 from the Autozone shelf and totally screw this up.... and that is I think where ROG got focused. You have to spec and use the right replacement hose.
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