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Hi Michael, the threads on the fuel pump are 14 x 1.5 with a concave seat in the top (opposite of AN fittings). The engine fuel rail fittings are the same. The oil lines are 18 X 1.5.
I've found Stauff and many others.
I can get aluminium billet adapters to AN for everything but the clearances on the fuel pump mounting look a little tight according to what I can see in the images on the Skytek website.
For those Two fittings I looked for replacement 90 degree replacements for the AN fittings.
However, once I did that I discovered that there are at least Eleven families of connection styles with an infinite number of variants for differene those tails, O rings etc. As anyone who has done stuff with cars, hydraulics., etc. just because Two connectors screw together doesn't mean they will seal properly and a leaking or broken fuel or oil line can be a death sentence in an aircraft.
Hence my question which has yet to be answered: exactly what DIN or ISO standard does Rotax employ for its metric fittings and where can I find some?
If I can't find metric fittings that will exactly fit the Rotax Metric fittings (I've been trying for Two days now) then I think I'm going to order Rotax AN replacement parts for the oil lines and fuel return line. I may have to use adapters elsewhere. If that isn't going to work its a new fuel pump and Fuel rail assembly.
do you have the diameter and thread pitches?
Stauff make a range of metric adaptors
there is also a company here in western Australia called Alpha engineering that manufacture odd adapters etc.
good luck
mike
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