cdavis Posted August 21, 2006 Posted August 21, 2006 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! Quote
dpaton Posted August 22, 2006 Posted August 22, 2006 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 Quote This is not a sig. This is a duck. Quack.
cdavis Posted August 22, 2006 Author Posted August 22, 2006 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!!! Quote
dpaton Posted August 22, 2006 Posted August 22, 2006 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 Quote This is not a sig. This is a duck. Quack.
cdavis Posted August 22, 2006 Author Posted August 22, 2006 The existing fuel lines are 3/8" (-6). The engine is an O-320e2d with carb. Quote
cdavis Posted August 22, 2006 Author Posted August 22, 2006 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 Quote
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