ramius665

Current 86 951 suffered an engine fire, one of the side results is oil cooler lines that are severely fire damaged and unusable. For the cost of replacement, braided steel hose and AN fittings are roughly similar in cost. Has anyone attempted this in the past? My concern is that the Oil Filter housing threads will not take the AN fittings and I'll be SOL before I even get started, except that I'm out $100 or so. Any engine builders, HELP!

Rogue_Ant

If you want to convert to AN lines, then you need a pair of these:

Click Me


-Rogue

Zuba951

Be careful with JIC and AN fittings they are very similar but not the same.

LR ones are 22MM-12JIC so you need JIC hose ends
You really need a 22MM-12AN if you are going to use AN hose ends


JIC fittings, or SAE J514, or MIL-F-18866, are a type of flare fitting having 37-degree flare seating surfaces and are widely used in hydraulic applications. The SAE J514 standard replaces the MS16142 mil-spec standard; some tooling is still listed under the old mil-spec name. JIC fittings are similar in size and threading to AN fittings. 45-degree flare SAE fittings are similar in thread, but not angle and are not interchangeable.

Brian
86 951

Rogue_Ant

Good to know - thanks

badcoupe

yes I did it hosesandfittings.com had all the adapters, this was 4 years ago or so.

theedge

Ive done it as well, but not with braided stainless steel hose the second time. First time I did it I used SS braided, so I can say the following from painful experience.... Dont use that. Its a giant pain in the ***, its horrible to work with, and doesnt flex worth ****. And you will pull your hair out trying to assemble it.

Use Earls Pro-Lite 350, its nylon braided (still very tough), its lighter, just as strong, and more flexible and about 1000 times easier to work with. It needs to go with Earls Swivel Seal fittings.

You will need 22MM to -12AN fittings, a total of four if youre using the stock cooler. I used these ones:
http://www.pegasusautoracing.com/pro...asp?RecID=4213

For the engine side fittings, you will need one 90 degree AN fitting and one 45 degree AN fitting. Those fit quite nicely. I bought the hose and fittings from www.summitracing.com, remember it HAS to be Earls Swivel Seal fittings if youre using the Pro-Lite 350 hose! Otherwise it will weep oil no matter what.

I will find some pictures of how mine is done right now.

Jeff N.

A few maybe helpful notes for your planning. I've just had to come to grips with hose planning and metric to AN conversions for adding in a second oil cooler.

- All the porsche fittings on the cooler, lines, block are metric fittings. To swap to an AN based system, you need to carefully plan the metric to AN conversion at both ends.

- The factory oil cooler output fitting is 26 x 1.5 male. You can replace this with 22 x 1.5 to 12AN fitting as noted above. BAT inc has some 26 x 1.5 to 10 AN barbed hose metric fittings that will attach to the factory cooler port but as noted above the factory size is 12AN.

- Factory hardpipes and oil lines are either 26 x 1.5 male or female. Key note if you are somehow connecting to factory oil lines - the standard 26 x 1.5 to 12AN conversion fitting will not work! The 'underhead' length required by the porsche oil line is longer than the fitting length; won't seal. This is only an issue if you need to connect to the factory lines!

- I used oil system rated rubber hose with barbed fittings and oetecker clamps vs. the sexier s/s braided hose. I liked it. Very easy to cut and fit; only needed a kitchen knife and some hot water to assemble the hoses (and a set of oetecker clamping pliers). I can't see the value of the s/s braided hose...all reports seem to suggest it's a pain in the **** and it costs more.

I don't have any information on connecting to the engine port as I connected to the factory oil lines.

I found that BAT inc (batinc.net) had the best selection of metric / AN fittings. I suggest trying them.

Hope this helps. Was a bit of a learning experience for me.

Jeff

reno808

SEARCH

RolexNJ

Be nice, and try helping a bit...

SamGrant951

I have Setrab M22 to AN10 fittings and some 90/45 degree fittings, didnt reuse stock cooler - I used SS lines but it is a pain to work with.

badcoupe

SSaren't hard to work with you just have to know how to do it. Thats all I've evr used on all the race cars, it does take a little doing, duct tape and a chopsaw are your friend.

ramius665

Thanks for all of the advice, it's greatly appreciated. I've had to try really hard not to make a "this is my engine rebuild" thread, but instead just search for answers to the questions I've had an make a new thread when I can't find the info.

My intention is to re-use the stock oil cooler and just replace the lines. I think I've found the metric to AN fittings that I'll need. I think I'll probably go with rubber lines just because I don't have the financial luxury of screwing up the SS lines and starting over again.

Jeff N.

Another option is used lines. Check these guys out.

http://dcauto.gotdns.com/?mode=model&model=944-2

V2Rocket

for the record, aeroquip lists the same fittings as being useable for JIC or AN fittings in their catalog:

http://www.aeroquip.com/media/A-SPPE-MC0001-E.pdf

see pages 6 and 7

TRP951

good explanation of AN vs JIC http://www.mechanicsupport.com/articleStronger.html