Fuel pressure regulator fittings

[SKINY]

looking at this last night to order new fittings, the rail feed adaptor at the end is 8 mm and i have a an8 fitting for it, the return line is 6 mm so do I need a an6 fitting and 6mm internal diameter fuel line for the return and 8mm internal for the feed ? 

[RobSR]

You won’t need a -8 line for fuel return, it’s overkill.

What FPR do you have? I can show you what you need. 

[SKINY]

There's no branding on it but has 3 ports with one blocked off

https://www.ebay.co.uk/itm/Universal-Adjustable-Fuel-Pressure-Regulator-Kit-160PSI-Oil-Gauge-AN-6-Fitting/152542375633?_trkparms=aid%3D555017%26algo%3DPL.CASSINI%26ao%3D1%26asc%3D53530%26meid%3D4c25b5a5ec3548d48e0ba58df60c399e%26pid%3D100507%26rk%3D1%26rkt%3D1%26%26itm%3D152542375633&_trksid=p2045573.c100507.m3226

It's exactly same as that only I have one 90 degree fitting that measures 8mm OD where the hose pushes on

Cheers

[RobSR]

13mm thread is a very odd size as per that picture. I’ve never seen a m13 > an-6 adapter unless they have their measurements wrong.

With all due respect, I wouldn’t fit that regulator to my car. I’d source a genuine Sard/FuelLab/Aeromotive etc that you can also get the correct fittings for. It’s not worth cutting corners on something that maintains a fuel supply.. 

[SKINY]

Thanks