Well, I found out totally by accident that
there are different type of tapered pipe threads,
NPT, and BSPT. To quote some Web site:
British taper pipe threads (BSPT) and American pipe
threads (NPT/NPTF) have some similarities and some
differences, but there are two sizes, 3 /4, that are
difficult to distinguish with the naked eye. The two
have the same nominal size and pitch, and sometimes
can be differentiated only through deductive
reasoning.
So I probably used the wrong type of oil plug.
In its size, the American and British pipe threads
have the same diameter and thread pitch, so the
difference must be in something more subtle liek
the angle of the threads.
Anyway, before I change the oil again, I'll get
a genuine British plug. I good industrial
supply house like McMaster sells both NPT and BSPT
fittings. But since I change the oil once a year,
I'm not going to worry about it right away...
Doug Braun
'72 Spit
--- Doug Braun <doug@dougbraun.com> wrote:
> I got a plug from Home Depot (85 cents), and it
> looked well made (no burrs, etc), the thread
> matched the old one, and it fit just fine.
>
> Doug Braun
> '72 Spit
>
> --- cat_tail@comcast.net wrote:
>
> >
> >
> > "I ought to replace my oil pan plug (the
> > tapered-plug style). Will
> > a generic pipe plug from the plumbing section of
> the
> > hardware store
> > work OK, or would I be better off ordering one
> from
> > a Spit parts vendor?"
> >
> > So, you're one of those DPO (Dreaded Previous
> > Owners) that screws up the cars we end up with...
> > :)
> > Seriously, Doug, although the thread size and
> pitch
> > *could* be a match for the female threads on your
> > oil pan, it's highly doubtful. If it's not, the
> > hassle/ expense of getting it right after the
> damage
> > is done would far exceed the expense of a proper
> > drain plug.
> > Cheers..
> >
> > -Rick
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