Windex Posted January 12, 2006 Share Posted January 12, 2006 Ok, So I have the boost and oil pressure gauges installed in the center cubby (stealth mode) and I am sick of looking the oil gauge not move. So I decide it's time to finally install the sending unit. But... having seen a wonderful walk through here: http://legacygt.com/forums/showthread.php?t=24956 I am reminded that the Subaru Adapter comes in BSPT, and not NPT like the gauge. (BSPT = 28tpi, NPT = 27tpi) Somehow I just can't make myself teflon the hell out of the fitting and ram it in there, so I relegate myself to searching for a BSPT male to NPT female adapter. Ugh...Can't friggin find one up here! (after looking in several industrial supply shops and machinist facilities), and I'm too impatient to wait for one of of EBAY. So I figure I'll go home and use my NPT tap to "ream the adapter a new one" by chasing the existing BSPT threads with my npt tap, and hope there are no leaks. What do I find when I look at the tap? that it was BSPT all along... came out of a metric tap n die set I've had for eons... http://www.saturnfans.com/photos/data/500/NPTBSP.JPG So, I used the matching die (also bspt), and now, having re-threaded one end of the above nipple, I have an adapter which cost me all of a $1.25 - not bad. If any GTA LGT owners are contemplating an Oil gauge install, PM me, grab a brass nipple from Home Depot, and I'll be more than happy to re-thread it for ya. For reference - the gauges (oil pressure on the right which is now finally functional): http://www.saturnfans.com/photos/data/500/gauges1.JPG Cheers. Link to comment Share on other sites More sharing options...
sportwagon Posted January 12, 2006 Share Posted January 12, 2006 good work man! Link to comment Share on other sites More sharing options...
sportwagon Posted January 12, 2006 Share Posted January 12, 2006 I've never heard of bspt... I've heard of BS obviously... but I know that's not what you're slinging here! This adapter from subaru, that you are using, it doesn't happen to be a subaru part(#11024AA210) for the oil gallery plug? Link to comment Share on other sites More sharing options...
Windex Posted January 12, 2006 Author Share Posted January 12, 2006 This adapter from subaru, that you are using, it doesn't happen to be a subaru part(#11024AA210) for the oil gallery plug? Yes. That's the one. If you thread an NPT (National Pipe Thread - almost all N. Am. fittings and sending units) fitting into a bspt (British Standard Pipe Thread) "hole" it will likely leak, as the threads are not the same. They're close (27 vs 28 tpi) but not the same. Link to comment Share on other sites More sharing options...
sportwagon Posted January 12, 2006 Share Posted January 12, 2006 going into this hole here: with this type of set-up? hmmm... by what manufacturer is your gauge made? Link to comment Share on other sites More sharing options...
impostor Posted January 12, 2006 Share Posted January 12, 2006 I dont know if you saw the link in the second post in that walkthrough thread, but you can get a kit or just the adapter at www.wrxtra.com. Jim Link to comment Share on other sites More sharing options...
NutBucket Posted January 12, 2006 Share Posted January 12, 2006 http://www.egauges.com/ also sells the correct adapter. I used in on my previous Honda. Link to comment Share on other sites More sharing options...
Windex Posted January 12, 2006 Author Share Posted January 12, 2006 going into this hole here: with this type of set-up? hmmm... by what manufacturer is your gauge made? The set up is similar, but I am not mounting the sender remotely via the hose. I am just leaving it right at the block under the throttle-body. Minus the hose, the setup is almost the same. The gauges are Stewart Warner, http://www.racerpartswholesale.com/swindex.htm and were just what was available at the local speed shop up here for a decent price (Defi are too rich for my blood). Black surround, white face, red needles. Don't match during the day, but with white LED peanut bulbs illuminating at night, they match pretty good in the dark. Link to comment Share on other sites More sharing options...
sportwagon Posted January 12, 2006 Share Posted January 12, 2006 cool... I think I'm all set with my defi set-up... I hope! However, the same set up in the picture was in both my 'ole W and now my legacy... no leaks! Anyway, good job with the tapping of the thread, maybe someone will take you up on your offer! enjoy the gauge movement! Link to comment Share on other sites More sharing options...
al-gorithm Posted January 12, 2006 Share Posted January 12, 2006 Dude, Can you help me out with that? I have the adapter already and I am in Oakville. Thanks, Al. Link to comment Share on other sites More sharing options...
Windex Posted January 13, 2006 Author Share Posted January 13, 2006 al-gorithm - check your PM Link to comment Share on other sites More sharing options...
1max2nv Posted January 13, 2006 Share Posted January 13, 2006 Autometer makes a male BSPT to female NPT adaptor. I used it before. Oil Pressure 1/8" NPT to 1/8" BSPT Product # 2269 I used it on my other car. http://images4.fotki.com/v45/photos/5/55372/527076/DCP01032-vi.jpg Link to comment Share on other sites More sharing options...
PhilT Posted January 13, 2006 Share Posted January 13, 2006 Nice work, you'll have to show me how to do that soon Double Award Winning Legacy GT Wagon Link to comment Share on other sites More sharing options...
Windex Posted January 15, 2006 Author Share Posted January 15, 2006 Sure, but only because you're in the same city Next time I'm at Home Depot (tomorrow likely) I'm gonna pick up a few brass nipples to convert to adapters. you know, just in case... Link to comment Share on other sites More sharing options...
sgt Posted January 15, 2006 Share Posted January 15, 2006 Be very careful with a brass tube, especially one that long. Brass is not very good at standing up to engine vibration. Link to comment Share on other sites More sharing options...
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