thread size of oil pressure sending unit?
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20BFD
Joined: Sep 2002
Posts: 506
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From: Winnipeg
thread size of oil pressure sending unit?
I just got an autometer oil pressure gauge and the compression fitting is too large and its standard. Does any one know the thread size for the stock location?
I have searched and also asked my local mazda dealer and they couldn't tell me.
Thanks
I have searched and also asked my local mazda dealer and they couldn't tell me.
Thanks
It's on here somewhere. It's a screwy size. 1/4" BST or something.
The search isn't working for me right now. Try later and I'm sure you'll find something
The search isn't working for me right now. Try later and I'm sure you'll find something
Last edited by poss; Feb 9, 2005 at 11:39 AM.
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Joined: Apr 2002
Posts: 1,336
Likes: 2
From: Dayton, OH
The correct size is 1/8"- 28tpi BSP (British Standard Pipe Thread). Some people have had luck screwing an NPT fitting in there with enough teflon tape, but the correct method would be to aquire a BSP to NPT adapter (yes, they are available).
Hope that helps,
-Rob
Hope that helps,
-Rob
Senior Member
Joined: Feb 2004
Posts: 321
Likes: 0
From: Raleigh, NC
Pegasus has a pretty good selection of BSP adapters: http://www.pegasusautoracing.com/gro...D=PLUMADAPTBSP
That's what I used when I installed a mechanical oil pressure gauge in my Miata - it looks like Mazda routinely uses BSP for these fittings - heaven knows why. BSP is tapered, NPT is not.
That's what I used when I installed a mechanical oil pressure gauge in my Miata - it looks like Mazda routinely uses BSP for these fittings - heaven knows why. BSP is tapered, NPT is not.
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