MainePorsche

Guys,
Can anyone recommend a link to where I might find a guide, or glossary, that can educate me on fuel line fitting types and how to take measurements so I can make an educated choice on obtaining the the part the I need.
Thanks in Advance.
Craig

kaelix

Something like this?

http://members.rennlist.com/sharkski...-FuelLines.htm

MainePorsche

Thanks.
But what I'm posting for is a link to a guide that speaks of ANSI type of descriptions/nomenclature of pipe fittings for fuel lines. For example, at the ends of the threaded male ports on a FPR how would one technically describe or measure the angle of the bevel that the female end that attaches to it. How does one measure thread numbers or pitch when choosing from the NPT values out there. Do I have an AN number so that I can choose the appropriate one ? I have no idea, but I do want to get educated correctly, and quick.

jpitman2

AFAIK all tube/piping fittings of any given type will have a std defined angle for seats, thread forms etc. Once you start with one type (AN, ANSI, SAE, metric etc) , anything of the same code will fit. See this page for a sample :- http://www.ryco.com.au/index.php?id=225
On the left side is a list of other types of connectors. If you are looking at changing from a std metric fitting to something more readily available in USA, maybe you are making it harder than it needs to be.
Imperial (US) threads are written as OD and type - eg 1/4 UNC (united National Coarse) or 1/4 UNF (UN Fine) - mostly the thread pitch is not given.Other imperial types are BSPT (Brit std pipe- tapered), Metric are conversely written as an OD and a pitch - as in M8x1.25 - 8 mm OD, each thread 1.25mm to one turn. Where M6 (eg water pump bolts) only comes in one pitch, M8 and M10 come in up to 3 different pitches.
Download the Adaptor catalog from the Ryco site above, and you will see many different thread types\, pictures of the different types of connectors, and things like cone/taper angles. While this is a general hydraulic parts catalog, many of the fitting types will be relevant. A thread gauge like this below would be a huge help to identify things.
http://www.ebay.com.au/itm/Metric-Wh...-/400537114334
jp 83 Euro S AT 55k

MainePorsche

That's perfect.
Thanks so much.
Craig

jpitman2

One other thing that may be worth knowing about hose sizes. Most are referred to by a number indicating ID - its in 1/16" units. eg a -6 hose has a 3/8" bore, which is close to 10mm. In US/Imperial fitting sizes, AN-6 should fit with a 10mm hose. Elbows or adaptors (ie things with 2 threaded ends) for 3/8 would have 0606 in their name/id somewhere; T pieces will have 3 numbers and so on. If there is a size change ion an adaptor the numbers will be different, as in 0608 will go from 3/8" to 1/2" etc.

I was looking at Sharkskin's page on fitting new hoses with clips to his engine bay CIS hoses, and wondering if I would do that, rather than crimped hoses. If we assume these are 10mm ID hoses (I suspect more likely 8mm) operating at 75psi (CIS system pressure) on the delivery line, the area of the hose ID is 0.121 Sq Inches. Times 75psi, we get a force trying blow the connection off, of a whole 9lbs. So I would suggest that the clips are quite safe is everything is done properly. I have used push on 1/16" nylon tubes at 100psi and never had one come off unless I pulled it off.

hth
jp 83 Euro S AT 55k

GregBBRD

Those metric male fittings on the end of fuel pressure regulators/fuel rails seem to mostly be a German Metric thing....not very common, outside of Germany. Certainly nothing close to or anything to do with AN specifications and the Japanese generally do it differently.

The fittings, that I have (which attach directly onto those male threads) are made, for me, in Germany. I have them to accept both Goodridge's Teflon lined AN hose (crimped on hose) and regular AN hose (These ends accept "standard" stainless or nylon covered AN hose, which can be replaced when the hose deteriorates. These can be assembled, at home.) The "unique" thing about both of my fittings is that they are metric on one end (to bolt directly to the German males) and accept "standard" American AN hose on the other (instead of requiring metric sized hose.)

MainePorsche

Unforeseen things do occur.
The union of the line at the cooler from the regulator was 'non standard' in that I have an early 87 (DOM 12/86).
At the cooler is a female attachment as I'm told is seen in MY 86.
I was investigating applying an adapter to this union.
However, Roger tells me the matter will be remedied today and shipped express.

GregBBRD

Yes. That is completely correct.

Roger works double time to solve these issues. Quite a guy....we are all really lucky to have him. He was communicating with me at about 9pm, his time, trying to figure out how to solve your specific problem.

The "early" '87 models used the same regulator "design" as the '85/'86 models did. And they used the same fuel cooler that the '85/'86 models did, with the female threads. I was never able to ever find a male fitting (or adaptor) that went into that cooler and adapted to anything. Deep 16 x 1.5 female threads with a convex thread.....crazy. I finally had a small run of custom adaptors made (hundreds of them required to do a custom run)....exclusively for that application.

I'll break "even" on them about 2025.....

MainePorsche

To Greg and Roger,
See new posting.