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Old 06-01-2012, 04:41 AM   #1
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I drilled and tapped my pan for 3/8" NPT, but what do you guys use to seal up the threads? Tig welding is out of the question, so i dont know if i should use loctite or some sealant or what?
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Old 06-01-2012, 04:46 AM   #2
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teflon tape.

NPT thread is technically self-sealing. however, it should always be used with teflon tape as it acts both as a sealant and lubricant and helps the threads seal better.
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Old 06-01-2012, 03:47 PM   #3
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Many here including myself have JBwelded the thing on. No leaks thus far..
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Old 06-01-2012, 04:13 PM   #4
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JB weld on the threads. teflon tape is a horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible idea
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Old 06-01-2012, 04:34 PM   #5
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+1 Teflon tape can come loose in your oil pan and clog oil pickups, oil ports, etc.
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Old 06-01-2012, 04:53 PM   #6
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Keep teflon tape away from your engine in general. The probability of it causing catastrophic damage (eg, by entering a lifter) is pretty low, but there's no sense tempting fate. Even overlooking that fact, it's not the best product available for this purpose.

A bit of JB-weld dressed into the threads just before you screw the fitting into the pan seems to work wonders. Not only does it seal well and resist heat and oil once cured, but it's pretty much the ultimate threadlocker.
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Old 06-01-2012, 08:16 PM   #7
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Quote:
Originally Posted by Braineack View Post
JB weld on the threads. teflon tape is a horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible horrible idea
Just so I'm sure, are you saying it is horrible then?
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Old 06-01-2012, 08:25 PM   #8
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He's just repeating the words his parents called him.
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Old 06-02-2012, 12:14 AM   #9
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Well fuсk you guys. Teflon tape is where it's at. If you use it right, pieces of it will not come off. If you're paranoid feel free to use teflon paste.

http://en.wikipedia.org/wiki/National_pipe_thread
Quote:
This means that NPT fittings should be burr free and lubricated using a lubricating material like lubricating paste or tape.
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Old 06-02-2012, 12:31 AM   #10
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Originally Posted by soviet View Post
Well fuсk you guys. Teflon tape is where it's at. If you use it right, pieces of it will not come off. If you're paranoid feel free to use teflon paste.

http://en.wikipedia.org/wiki/National_pipe_thread
The temperature limit of Teflon is usually around 200 deg C so I guess there is thermal concerns that might be valid too.

I'm not sure about JB Weld unless you never intend removing it... so I wouldn't unilaterally replace Teflon paste/tape with JB Weld either.
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Old 06-02-2012, 03:42 AM   #11
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Quote:
Originally Posted by gslender View Post
The temperature limit of Teflon is usually around 200 deg C so I guess there is thermal concerns that might be valid too.

I'm not sure about JB Weld unless you never intend removing it... so I wouldn't unilaterally replace Teflon paste/tape with JB Weld either.
If you remove it, then you have a hole in your oil pan. Why would you ever remove it? If you take off the turbo just cap it off with a rubber nipple.
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Old 06-02-2012, 11:50 AM   #12
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Quote:
Originally Posted by soviet View Post
Well fuсk you guys. Teflon tape is where it's at. If you use it right, pieces of it will not come off. If you're paranoid feel free to use teflon paste.

http://en.wikipedia.org/wiki/National_pipe_thread
By all means, teflon tape the ---- out of the oil feed for your EFR. Post results
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Old 06-02-2012, 01:50 PM   #13
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Quote:
Originally Posted by gslender View Post
I'm not sure about JB Weld unless you never intend removing it... so I wouldn't unilaterally replace Teflon paste/tape with JB Weld either.
The JB weld isn't that strong. Most hose barbs have a hex flange at the bottom -- put a deep well socket on it and a long ratchet and it comes right off.

--Ian
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Old 06-02-2012, 01:53 PM   #14
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yeah but it holds well if you dont touch it.
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Old 06-02-2012, 02:57 PM   #15
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Quote:
Originally Posted by soviet View Post
That article assumes that the male piece is being received by a female piece which is match-tapered and provides full thread engagement.

We're screwing it into a very thin oil pan with maybe 1.5 threads' worth of engagement depth.

This is like comparing a knowledgeable, rational, articulate person to Pusha.
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Old 06-05-2012, 10:48 PM   #16
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Teflon is a bad idea for automotive applications. It was never really meant for it. Permatex has what you need: http://www.permatex.com/products/Aut...t_Compound.htm
There's a few options, but this is really what you want. It is reusable too, in that you can back it out a bit, screw it back in, and it will keep the seal. Not something you can really do with tape
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Old 06-06-2012, 01:12 PM   #17
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jbweld i have used with success.

just dont touch it when you initially install it, let it cure for the day.
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Old 06-06-2012, 01:25 PM   #18
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JB weld just works. Use it!
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Old 06-06-2012, 01:44 PM   #19
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jbweld x2, did the same on all of my setup
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Old 06-06-2012, 02:23 PM   #20
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How has nobody mentioned RTV? I used RTV over a year ago and I haven't seen a drop of oil come from that fitting.
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