Buickrat
New member
- 28
- 1
- 1
- Location
- New Hampshire
Well, after buying every brand out there: wix, napa, hastings, Baldwin, fleetguard etc etc, I still could not figure out how to adapt the drain to accept the military style that was stock on these units(that allows the fuel to drain outside the unit). Wix seemed to be the closest, but drain would only thread in 1/2 turn, and by 3/4 turn it would stop. Hmmm.
I thinks to myself, that sure looks like 1/4npt thread, so I get my 1/4 npt tap to open it up some. Tap goes in 3 turns, stops. dead. so much so that the insert in the filter started to turn. I junked 3 filters trying this. Contact Wix both by phone and email. Guy in the email says its 1/4 npt. guy on the phone says it's 1/4 npS.
Hokay, who's right? I explain the situation to the email guy, who immediately turns into a keyboard warrior, asking why would I try to modify the filter, I'll void the warrantee etc. Even emailed me a copy of their warranty!?! I emailed back politely (ok maybe not so politely) that I don't give a rats butt about warranty on the part, just want him to verify what the actual thread is. He emailed back saying he'd typo'd the wrong info, it is actually npS thread.
OK. Seems easy enough, need a male 1/4 nps to female npt adapter and I will be all set. Wrong again. Seems no one in the developed world has ever needed to adapt from nps to npt in 1/4. N O body!
Seeing as I had already procured a 1/4 npt fuel shut off that I could put a nipple on to accept the drain tube, I explained my woes to our mailman, who is ex navy and just so happens to have a machine shop in his basement where we could, if need be, cut down the shutoff so we can thread it nps. Or we could make an adapter ourselves which we may still do.
I decided, against my better judgement, to search out a fram (yeeuuck) p8043, not easy to get as most parts stores don't carry fram any more (big surprise).
Well, lo and behold, picked one up at autozone today and removed the petcock drain and presto, 1/4 npt, fits the stock drain perfect. Some white tape, 1/2 hour wrestle and 20 scratches on my arm to get the stock filter off, (King Kong musta had Wheaties that day). She is now sporting an ugly orange water separator with the factory drain with no leaks!!!
I am by no means a fram supporter, as their oil filter efficiency ratings are as bad as motorcrafts are (near the bottom in both single and multiple pass tests), and may pursue making the fittings so we can put a quality wix or napa gold filter on these units.
I thinks to myself, that sure looks like 1/4npt thread, so I get my 1/4 npt tap to open it up some. Tap goes in 3 turns, stops. dead. so much so that the insert in the filter started to turn. I junked 3 filters trying this. Contact Wix both by phone and email. Guy in the email says its 1/4 npt. guy on the phone says it's 1/4 npS.
Hokay, who's right? I explain the situation to the email guy, who immediately turns into a keyboard warrior, asking why would I try to modify the filter, I'll void the warrantee etc. Even emailed me a copy of their warranty!?! I emailed back politely (ok maybe not so politely) that I don't give a rats butt about warranty on the part, just want him to verify what the actual thread is. He emailed back saying he'd typo'd the wrong info, it is actually npS thread.
OK. Seems easy enough, need a male 1/4 nps to female npt adapter and I will be all set. Wrong again. Seems no one in the developed world has ever needed to adapt from nps to npt in 1/4. N O body!
Seeing as I had already procured a 1/4 npt fuel shut off that I could put a nipple on to accept the drain tube, I explained my woes to our mailman, who is ex navy and just so happens to have a machine shop in his basement where we could, if need be, cut down the shutoff so we can thread it nps. Or we could make an adapter ourselves which we may still do.
I decided, against my better judgement, to search out a fram (yeeuuck) p8043, not easy to get as most parts stores don't carry fram any more (big surprise).
Well, lo and behold, picked one up at autozone today and removed the petcock drain and presto, 1/4 npt, fits the stock drain perfect. Some white tape, 1/2 hour wrestle and 20 scratches on my arm to get the stock filter off, (King Kong musta had Wheaties that day). She is now sporting an ugly orange water separator with the factory drain with no leaks!!!
I am by no means a fram supporter, as their oil filter efficiency ratings are as bad as motorcrafts are (near the bottom in both single and multiple pass tests), and may pursue making the fittings so we can put a quality wix or napa gold filter on these units.
Last edited: