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I need help installing an oil pressure gauge. I thought the port in the engine block was 1/8" NPT, because the sender unit will screw into an 1/8" NPT port...so I bought an 1/8" NPT tee fitting to allow me to hook up a gauge and still keep the oil light. However, it appers the the thread is actually metric or mybe British Pipe? Has anyone done this...and where did you get the fittings?
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Brian
93L - 5SP, FMS springs, 323 alloys, 1st gen B6, ported head & intake, FMS cam, ported exhaust manifold w/2-1/4" head pipe.
04 Mustang GT, 5SP, CAI, TFS plenum, 70mm TB, catted X, Pypes 304SS cat-back, Hurst Billet+ shifter, SCT/Bama tuned....4.10's & cams coming soon
62 Galaxie 2D sedan project- 428, 3x2V, 4SP, 3.89TLOC
1 wife, 2 kids, 9 dogs, 4 cats......
Not enough time or money for any of them -
is this on a stock 1.3?
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I believe it is metric pipe thread. Can anyone verify this?Comment
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To match threads I hold the old bolt or whatever against the new and see if the threads interlace.
If possible I take the old part to the store.Last edited by WmWatt; 10-03-2012, 06:21 AM.Original owner of silver grey carburetted 1989 Festiva. 105k km as of June 2006. 140k km as of June 2021.Comment
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Guessing M12 x 1.5T1963 Fairlane - future NSS drag car
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2003 Sport Trac - 180k, 130k on replaced motor with new timing chains - F/S soon.
2005 Accord - wife's DD
2008 Mountaineer - step daughter's DD
2015 F150 SCrew - DDComment
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Try NAPA. I think that's where I got my adapter fitting although I've seen them online, too. There is one thread difference between the American 1/8" NPT and the hole in the B3 block. The American 1/8" NPT is 27 threads and the engine block is 28 threads. If you go to NAPA, ask them to look up an oil pressure sending unit for your Festiva. After they have the part number, ask if they have a catalog with a picture of the oil pressure switch. If they have the catalog, the picture of your switch should also give a description of the thread size. Tell them you need an adapter that is the same thread size as the switch and will adapt to a regular 1/8" NPT.You gonna race that thing?
http://www.sdfcomputers.com/Festivaracing.htmComment
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Just pulled it up from NAPA, thread is 1/8" x 28 BSPT. So yes, British, and 28. Hope this helps
No festiva for me ATM...Comment
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Thanks guys! I suspected it may be BSPT. I occasionlly run into it at work...mostly on european food processing equipment. The thread is slightly smaller on the OD. It will screw into NPT, but not vice-versa. I think I can order an adapter through work (we re an Aeroquip Distributor) now that I know what it is.
Thanks to all!Brian
93L - 5SP, FMS springs, 323 alloys, 1st gen B6, ported head & intake, FMS cam, ported exhaust manifold w/2-1/4" head pipe.
04 Mustang GT, 5SP, CAI, TFS plenum, 70mm TB, catted X, Pypes 304SS cat-back, Hurst Billet+ shifter, SCT/Bama tuned....4.10's & cams coming soon
62 Galaxie 2D sedan project- 428, 3x2V, 4SP, 3.89TLOC
1 wife, 2 kids, 9 dogs, 4 cats......
Not enough time or money for any of themComment
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I just retapped mine to 1/8npt. Makes life easier.Im not driving a Festiva because I'm poor. I drive a Festiva because i want to!
Dennis
93 L Advancedynamics suspension mod, awaiting B6 swap
91 GL B6 sohc, currently in the hands of DAE undergoing top secret work. Soon to be cable G, with stage 3 F1 Kevlar clutch... To be continued
93 GL In progress BP/hydro G
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88 Dakota tow pigComment
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