Pictures NPT bushings...first selection.... normal shouldered bushings,
scan down to 2nd selection "face" or "flush" bushings.
_http://www.fastfittings.com/brass-bushing_
(http://www.fastfittings.com/brass-bushing) .
With talk of using pipe dope or teflon to seal.....does the sender have to
be grounded? If so, will the sealant interfere with proper electrical
contact? I don't think I used any sealant on mine and have no leaks.
Plumbing requires sealant because it's under 40-100 psi. Car's cooling is
pretty
low pressure.
Mark L
In a message dated 4/5/2011 12:29:08 A.M. Eastern Daylight Time,
JCMC2006@suddenlink.net writes:
Pipe fittings aren't designed to sit flush when installed. Now if you
wanted it to set down more flush you have to use the proper pipe tap to
make
the hole a little bigger so the fitting screws down further. This can be a
very slippery slope, because pipe connections are tapered and if you start
going deeper you take the chance of going too deep then your fitting will
never seal. The only option then is to start over with the next larger size
pipe size. If you are familiar with pipe tapes you know there is a BIG
difference in the sizes, going from 1/8 to 1/4 to 3/8 to 1/2 there are big
jumps in the sizes.
Any time I have ever seen a pipe joint flush is because someone has done a
very bad job of tapping the hole, going far too deep. The very principal of
a pipe joint is the taper effect where the deeper the fitting goes the
tighter it gets.
Now, it's true that if you were very "careful" and taped it just the right
depth, so that when the fitting got to the tightest point and you were
flush
it would work. But I'll say it again they aren't design to be flush like
something that has straight threads.
Also be sure to use "pipe joint compound" on the threads available at
pluming supply stores made by Oatey Great White with Teflon (TPFE).
Jerry Christopherson
9473187
-----Original Message-----
From: tigers-bounces@autox.team.net [mailto:tigers-bounces@autox.team.net]
On Behalf Of Samouce's
Sent: Monday, April 04, 2011 5:32 PM
To: tigers@autox.team.net
Subject: [Tigers] Stinkin NPT adapters....@ wits end.
Hello again,
So I have been waiting on two adapters so I can get the intake manifold
bolted down, they arrive and are completely the wrong size.
I run down to the auto parts store and get some that fit (should have done
that in the first place).
Here is my problem, they will not thread flush with the manifold. The
adapter for the water temp sensor has to be fully seated for the sensor to
clear the distributer.
The heater return looks just stupid.
http://i796.photobucket.com/albums/yy249/samouce/Tigers%20Teeth/006-4.jpg
The fittings are NPT 3/8 X 1/8 and 1/2 X 3/8. Due to the NPT flair, then
will not screw in all the way. Who makes a fitting that will fit flush?
Can
find nothing in Summit or Jegs.
Thanks for any help!
Duke
B382002037
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