Thanks for pointing out the difference! Mike, I retract my suggestion - the
two ARE different enough that you wouldn't want to use the 1/8 NPT switch
with the stock "T".
On the "R", I replaced the entire hydraulic system, including switch and the
"T" it threads into, so I didn't notice the difference. The brass "T" I
used was 1/8NPT for the new switch, with female inverted flare in and out.
If a stock replacement switch proves difficult to find, or too pricey,
Summit, Pegasus, or any chain auto parts store will stock a "T" as described
above for a few bucks, which can be installed in place of the original and
allow the use of the 1/8 NPT switch.
Cuyahoga Falls OH
66 1600 http://www.mildevco.net/chevypowereddatsuns/
77 280Z http://www.mildevco.net/chevypowereddatsuns/
----- Original Message -----
From: "Stan Chernoff" <firstname.lastname@example.org>
To: "Mark Sedlack" <email@example.com>; "Mike H."
Sent: Thursday, September 29, 2005 11:03 AM
Subject: Re: 67-1600 Brake Switch
> Be careful about the threads. The threads on the original switch are
> 1/8 BSPT and have 28 threads per inch and a different thread form than the
> 1/8 NPT that have 27 threads per inch as described below.
> May leak and may not leak?
> At 09:57 AM 9/29/2005 -0400, Mark Sedlack wrote:
> >www.summitracing.com part# PRF-80171
> >either will work - 1/8NPT brake fluid pressure switch
> >Mark Sedlack
> >Cuyahoga Falls OH
> >66 1600 http://www.mildevco.net/chevypowereddatsuns/
> >77 280Z http://www.mildevco.net/chevypowereddatsuns/
> >----- Original Message -----
> >From: "Mike H." <firstname.lastname@example.org>
> >To: <email@example.com>
> >Sent: Thursday, September 29, 2005 8:16 AM
> >Subject: 67-1600 Brake Switch
> >> Hi Guys,
> >> Any of you know of a part interchange number or aftermarket replacement
> >for early
> >> 67-1600 single cyl. brake light switch?
> >> Thanks,
> >> Mike H. '67-1600