EGT installed, but how do I seal the threads? They leak!

adamsrs · 06-13-2002, 02:16 PM

HYey guys, just a quick and easy question! What did you guys use to seal the threads of your EGT probes? Mine screwed in but it has a bit of leak thus giving a wavy and false reading! Thanks! Any info would be GREAT!
adamsrs

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wcbjr · 06-13-2002, 03:05 PM

Home Depot, teflon tape. $0.89. But, I don't know if it could withstand the heat.

Loctite?

8Complex · 06-13-2002, 03:12 PM

Hey, be more vague next time.

What kind of probe? What kind of fitting? What are you currently usingn to seal it? How much torque did you give the fittings?

Teflon tape will work, but a good anti-seize will work better. Just gotta torque it down pretty good and make sure it seals, though not strip the hell out of it. I don't know a real number, though, sorry.

North Ursalia · 06-13-2002, 04:49 PM

I may be way off here, but unless the amount of leakage is *huge* I can't see the reading being that off- the leakage is around the probe after all. Is something wrong with the sender? I've had 3 go bad on me thus far (I'll install #4 one of these days

).

Brian
http://www.northursalia.com
http://www.imprezamods.com
http://www.scoobymods.com
http://www.deniedmywarranty.org

Impreza Rider · 06-13-2002, 06:22 PM

Sorry for hijacking the thread, but how did you know the senders went bad?

North Ursalia · 06-13-2002, 06:45 PM

To continue the hijacking, the needle on the gauge started fluctuating wildly, and eventually just stopped moving and pointed straight down (between 0 and 1600 deg F on the Autometer Phantom). The whole gauge was replaced and it still happened- replaced the sender (the probe) and it worked fine again. This has happened with one competition probe and two "regular" probes thus far. I have another competition probe to replace the presently broken probe with, I just have to get around to doing it. They have no idea why they keep blowing- it never sees temps over 1400-1450 deg F.

Brian
http://www.northursalia.com
http://www.imprezamods.com
http://www.scoobymods.com
http://www.deniedmywarranty.org

Austin · 06-13-2002, 07:53 PM

I'm assuming you're using either a BSPT or NPT screw in bung. If you want a tighter seal, you screw the bung in more. If you've reached the end of the bung's threads, then you tapped the hole too far.

adamsrs · 06-13-2002, 09:58 PM

Sorry, Defi gauge and bung and sender and everything...it is 1/8" pipe thread i think.....and hmmmmmm, it is in there pretty tight...the needle DOES fluctuate a lot though...from like 1400-1500 and like 800-1000...seems weird.
Thanks Austin!
adamsrs

Eric SS · 06-13-2002, 11:06 PM

The fluctuations could be your computer doing a timing dance and causing different EGT's

And if you are using pipe thread (NPT) and you have leaks, you did something wrong. I would get a crush washer (Like on certain spark plugs) and use that.

anyway, just a few thoughts

Eric

Ethan · 06-14-2002, 03:34 AM

Quote:

Originally posted by Impreza Rider
Sorry for hijacking the thread, but how did you know the senders went bad?

I'm not too sure about them Autometer Comp probes. Every once in a while my probe will just stop reading for a while. I have no clue what the problem is, though I never got around to sending it in for a replacment. BUt I seem to read a lot of people have problems with this probe

06-13-2002, 02:16 PM	#1
adamsrs Scooby Specialist Member#: 3768 Join Date: Jan 2001 Location: Seattle, WA	EGT installed...but how do i sela the threads? They LEAK! HYey guys, just a quick and easy question! What did you guys use to seal the threads of your EGT probes? Mine screwed in but it has a bit of leak thus giving a wavy and false reading! Thanks! Any info would be GREAT! adamsrs * Registered users of the site do not see these ads.

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06-13-2002, 03:05 PM	#2
wcbjr Scooby Guru Member#: 4001 Join Date: Feb 2001 Location: I love spherical bearings! Vehicle: 2006 Legacy GT Obsidian black	Home Depot, teflon tape. $0.89. But, I don't know if it could withstand the heat. Loctite?

06-13-2002, 03:12 PM	#3
8Complex Moderator Member#: 922 Join Date: Feb 2000 Chapter/Region: MWSOC Location: Schaumburg, IL Vehicle: 04 FXT Red	Hey, be more vague next time. What kind of probe? What kind of fitting? What are you currently usingn to seal it? How much torque did you give the fittings? Teflon tape will work, but a good anti-seize will work better. Just gotta torque it down pretty good and make sure it seals, though not strip the hell out of it. I don't know a real number, though, sorry.

06-13-2002, 04:49 PM	#4
North Ursalia Miss You Mom Oct 1940 - Feb 2008 Super Moderator Member#: 809 Join Date: Jan 2000 Chapter/Region: NESIC Location: NH, Land Of Many Trees Vehicle: 2000 2.5 RS, '14 For 92 5MT SVX	I may be way off here, but unless the amount of leakage is huge I can't see the reading being that off- the leakage is around the probe after all. Is something wrong with the sender? I've had 3 go bad on me thus far (I'll install #4 one of these days ). Brian http://www.northursalia.com http://www.imprezamods.com http://www.scoobymods.com http://www.deniedmywarranty.org

06-13-2002, 06:22 PM	#5
Impreza Rider Scooby Specialist Member#: 756 Join Date: Jan 2000 Chapter/Region: MAIC Location: Ashburn, Va Vehicle: 2003 Legacy L wagon 2009 Kawasaki C14	Sorry for hijacking the thread, but how did you know the senders went bad?

06-13-2002, 06:45 PM	#6
North Ursalia Miss You Mom Oct 1940 - Feb 2008 Super Moderator Member#: 809 Join Date: Jan 2000 Chapter/Region: NESIC Location: NH, Land Of Many Trees Vehicle: 2000 2.5 RS, '14 For 92 5MT SVX	To continue the hijacking, the needle on the gauge started fluctuating wildly, and eventually just stopped moving and pointed straight down (between 0 and 1600 deg F on the Autometer Phantom). The whole gauge was replaced and it still happened- replaced the sender (the probe) and it worked fine again. This has happened with one competition probe and two "regular" probes thus far. I have another competition probe to replace the presently broken probe with, I just have to get around to doing it. They have no idea why they keep blowing- it never sees temps over 1400-1450 deg F. Brian http://www.northursalia.com http://www.imprezamods.com http://www.scoobymods.com http://www.deniedmywarranty.org

06-13-2002, 07:53 PM	#7
Austin Scooby Guru Member#: 7089 Join Date: May 2001 Chapter/Region: NWIC Location: Moscow, ID Vehicle: 05 Legacy GT Sedan 07 4Runner Limited	I'm assuming you're using either a BSPT or NPT screw in bung. If you want a tighter seal, you screw the bung in more. If you've reached the end of the bung's threads, then you tapped the hole too far.

06-13-2002, 09:58 PM	#8
adamsrs Scooby Specialist Member#: 3768 Join Date: Jan 2001 Location: Seattle, WA	Sorry, Defi gauge and bung and sender and everything...it is 1/8" pipe thread i think.....and hmmmmmm, it is in there pretty tight...the needle DOES fluctuate a lot though...from like 1400-1500 and like 800-1000...seems weird. Thanks Austin! adamsrs

06-13-2002, 11:06 PM	#9
Eric SS Sooby Guru Member#: 1914 Join Date: Jul 2000 Chapter/Region: SWIC Location: 2013 335i, 2011 G37 coupe Vehicle: 2000 2.5RS w/ EJ22T swap and N20. gone. : (	The fluctuations could be your computer doing a timing dance and causing different EGT's And if you are using pipe thread (NPT) and you have leaks, you did something wrong. I would get a crush washer (Like on certain spark plugs) and use that. anyway, just a few thoughts Eric