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Scott - Roger will have that stock line. He's on vacation right now, but will be back in a week I think. The folks at his shop may be able to help. If Sean is checking in, he can tell you the correct hose that you are looking for.
Ed- Thanks. I've been in touch with Roger's staff, they aren't quite as knowledgeable on the subject as Roger himself. I understand he'll be back on the 11th, which is a little too late for me. My shop went on the market yesterday and might sell at any time so I'm pressed to get this finished before that happens. I've located two of the three lines I need, the rear "U" and the front line coming off the rail. I need to either fabricate the third or possibly find one of Greg Brown's reproductions, I'll know more about the GB alternative next week.
I don't know if I said it already, but this project is purely preventative. I'm installing PorKen's S300 fuel map and the 1987 fuel pressure regulator as part of the bargain, which is why it's highly recommended I replace all the high pressure fuel lines in the engine bay.
Meantime, if anyone has the specs and possibly a source for that line, I'll pursue fabrication.
I wonder, in the name of scientific inquiry: could one conceive of a test to add some sample data to this discussion? Perhaps an accelerated aging test, or an over-pressure test — I guess my question would be: is there an appropriate test one could (at least theoretically) perform to generate comparable results between the two approaches? I'm not qualified to suggest one; just wondering if it is possible.
And then there are people like me that buy an out of production "U" fuel line for the rear fuel rail/regulator connections as new old stock off of eBay for $25,
Yes, I will put it on my car, The first one has lasted 27 years without a problem and still looks just fine.
I wonder, in the name of scientific inquiry: could one conceive of a test to add some sample data to this discussion? Perhaps an accelerated aging test, or an over-pressure test — I guess my question would be: is there an appropriate test one could (at least theoretically) perform to generate comparable results between the two approaches? I'm not qualified to suggest one; just wondering if it is possible.
Odd you might ask John, matter of fact, yes
I just happen to be a retired industrial statistician/experiment designer with some ability in that area and I could, without a doubt, design such an experiment. I'm even versed in Taguchi's methods and can optimize to reduce costs.
All we need now is someone willing to fund the project. I expect it would only require a modest lab, we could probably do it for less than $250,000.
Of course. Because of all the variants, I generally sell all hoses separately.
Great news. I have the rear "U" and the front line off the rail arriving from LA early next week. I've been told there may be as many as two other lines I need on a 1985 928 S3, some say one other line, others two. I'm afraid I'm unable to decode all the variations in the PET and I'm in need of an expert on this car. If you think you can help I'll give you a call next week after the LA parts come in and I can be certain of what I already have.
That is how Porsche does it on the 928 if you buy their kit - even comes with EFI clamps for double redundancy.
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Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission? George Layton March 2014
928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
Gates Hose... Barbed fittings x24... No Clamps.... v12 Jag XJS...
What's a guy to do?
I can't count how many times I've explained how to do this correctly, on this forum.
Not again.
It appears that a supplier has convinced you that the SAE hose, rated for "carb" use, is going to work on the 12 cylinder injection application, as shown in the pictures.
......Just make sure that your fire insurance on the car is up to date, and your insurance company knows what the car's actual value is.....
Semi-retired, as of Feb 1, 2023.
The days of free technical advice are over.
Free consultations will no longer be available.
Will still be in the shop, isolated and exclusively working on project cars, developmental work and products, engines and transmissions.
Have fun with your 928's people!
I want to replace my fuel line from my fuel pump to the fuel accumulator. I measured my steel tubing and it is 10.3 mm O.D. and the hose is 2.5 miters long. Do you have fuel line and clamps for this? I called but was placed into voice mail.
Ed- Thanks. I've been in touch with Roger's staff, they aren't quite as knowledgeable on the subject as Roger himself. I understand he'll be back on the 11th, which is a little too late for me. My shop went on the market yesterday and might sell at any time so I'm pressed to get this finished before that happens.
Couldn't pass up the irony on this one. Here it is, year to the day, and my shop is still for sale.
Sorry to resurrect such an old thread (again), but I want to redo my fuel lines and I came across it after a Google search. Great info, but clearly this is a divisive topic and I don't want to start an argument
I did some further googling into Cohline and Gates lines, and I think I have a couple of options there. Regarding the use of Gates Barricade on a barbed fitting, it seems like there are conflicting views out there.
These: https://www.rotax-owner.com/en/gener...rricade#p29886 https://www.ctflier.com/topic/6358-g...#comment-88436
...vs...
the comments above.
What is the *real* reason for not using it on a barbed fitting?
No mention of the word barb on Gates' Barricade FI web page. In fact, the data sheet says "barb must be suitable for rubber hose", so I'm guessing the statements in this thread about rounding off the barbs are valid
The one thing it doesn't mention is minimum bend radius. I don't want to end up with kinks or restrictions. Is this a valid concern?
My other question (and I did search) is regarding AN Lines. Searching for "an line" just doesn't work because "an" is so generic and "line" matches all sorts. So... is there a reason *not* to use AN Lines? Just curious
Last edited by heyadamhey; 03-27-2024 at 12:42 PM.
The original Cohline hose has a PTFE sleeve which is very tough to work with. Requires a special and expensive crimp tool. Larger bend rad so tighter rads had to be preformed.
We use Cohline for all our hoses. More modern hose material readily available from Cohline and easy to crimp onto Cohline fittings.
Each hose costs circa $100 - brand new complete fuel hose which exceeds the parameters of the original style Cohline hose. Made in Germany helps as well.
I have a lot of trouble with ethanol absorbing water, turning to acid and eating my hoses here in Honolulu. So fuel hoses are a big concern for me. Where Roger and Greg both have solutions I generally go with Roger because the price is a lot easier for me to swallow, although I think Greg's are the supreme solution. Where Roger or Greg don't have solutions, I am currently trying the Barricade hoses. I am not super confident in it ,but we will see in time.
There is a guy on the 914 world forum with a thread about heating the Barricade hose in boiling water to bend it. It might also be helpful for getting them onto the salvaged stock barbs. I was able to get the Barricade hoses on to the barbs, but not all the way, and I am not satisfied with that. I have not tried the hot water, yet myself, but I expect I will.
Last edited by karl ruiter; 03-28-2024 at 08:50 PM.
06-29-2018, 03:15 PM
George Layton March 2014
