Flow Ezy Fuel filters

[cdavis]

I ordered a Flow Ezy fuel filter from AC Spruce with 3/8" NPT thread size.

 

When it arrives, the holes measure about .565 and a 3/8" AN fitting is way too small. I assume AC spruce sent me a 1/2 fitting, so I call. They say, no, you need an adapter.

 

Wanting to avoid an adapter, I get an RMA and order direct from the factory, a 4ILA-03-25-F3-B to be exact; should be a 3/8" fitting.

 

It arrives: same thing!

 

What gives? Do I need to order a 1/4" fitting to get a 3/8 NPT?

 

Thanks for any insight!

[dpaton]

AN and NPT aren't measurement compatible. One deals with ID, the other with OD. See this link:

 

http://216.242.145.16/products/content_p.phtml?pk=68

 

-dave

[cdavis]

Thanks for the excellent link. I was going nuts. That makes it all make sense now.

 

It looks like I need a 9/16-18 NPT to AN -6 line adapter....

 

 

Or, exchange the filter for one with a 1/4" NPT thread and use a 1/4 NPT to -6 hose fitting????

 

How have other people done this?

 

THANKS!!!

[dpaton]

Depends on what your existing fiel line size is. To match the filter, you should be using -8 AN fittings and line. If you want to match to what I think you have already (-6 AN) you should order the 1/4"NPT version of the filter.

 

The real question is, which size is right for the fuel flow for your engine?

 

-dave

[cdavis]

The existing fuel lines are 3/8" (-6). The engine is an O-320e2d with carb.

[cdavis]

Ok, I think I have it now.

 

To go from a 3/8" NPT (which is a 9/16" thread) to a 3/8 fuel line (which is a AN -6 fitting), you need the following Aeromotive part number adapter (p/n 15615).

 

http://www.shopatron.com/product/product_id=AER15615/415.0

 

The PN of the FlowEZ filters indicate the gpm flow through. Cozy recommends a 61L (6 gpm).

 

Thanks for your patience and help.

 

The people at Flow Ezy are very helpful.

http://198.170.245.162/home.html