EGT-Install problem!!!
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EGT-Install problem!!!
OK, so i was installing my egt into my manifold yesterday and bought a 1/8 npt tap from auto zone. I think that was the problem. Now I got a hole in my manifold and no threads. Is there anything I can do to fix it. Maybe take it to a muffler shop and get them to weld in the egt?? Any help would be greatly appreciated.
Laughing Gas
Joined: Jul 2003
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From: Littleton, Colorado
You can get a threaded bung or bushing in a larger diameter. Then just screw the thermocoupler into it. Just make sure you will have the proper depth for the thermocoupler and you'll be good to go.
I know Autometer makes them. You can find them here:
http://www.autometer.com/cat_accessories.aspx?sid=47
Good luck,
Austin
I know Autometer makes them. You can find them here:
http://www.autometer.com/cat_accessories.aspx?sid=47
Good luck,
Austin
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The tap that i bought from autozone seemed to break threads on the tap itself when i was using it. Hopefully that makes sence. I could get about a half turn with the tap and it would get real tight like it was cutting some threads and then it would come lose when turned some more. The tap was supposily made of tungsen.
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From: Bobcaygeon Ont.
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From: Round Rock, TX
okay I think what you're doing is actually stopping as you tap. It does have to cut the metal and that takes some pressure. It's not like just screwing in a bolt or screw into a threaded hole, you're making the threads so it's some work. You need to make sure you keep pressure on the tap as you turn it. You also need to make sure you keep putting oil on it to lubricate. The hardest part is getting that initial "bite" on the tap to get it going in.
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From: NorCal
Originally Posted by lancer
Actually i think the drill size i used for an 1/8" npt was 11/64". Hope this helps!
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5/16 is what the instructions said it should be a 21/64? guess i'll get some of those heli-coils and pray that works, but first try a "R' bit or a 21/64 bit (that is if i can find one) and a new 1/8 NPT tap but if that fails then the heli-coil. the tap i am currently using looks like a few of the first threads are missing i mean parts of the threads are broken off, i know this isn't good, so i'll get a new one.
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From: NorCal
Originally Posted by 03_PSD
5/16 is what the instructions said it should be a 21/64? guess i'll get some of those heli-coils and pray that works, but first try a "R' bit or a 21/64 bit (that is if i can find one) and a new 1/8 NPT tap but if that fails then the heli-coil. the tap i am currently using looks like a few of the first threads are missing i mean parts of the threads are broken off, i know this isn't good, so i'll get a new one.
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From: Chicago suburbs
When you tap the threads, you have to add oil to help them cut, plus you have to reverse out to clear the just cut threads, and then do another 1/4 turn or so, back it out a little, etc... I thought I would never get the tap to start cutting the threads and it just kept popped out. Eventually it does start and cut the threads... Then you have to figure when to STOP. To me that was the hardest part, did I cut enough threads to hold. You got to have at least 4 (or more) turns of the thermocouple adapter. If you go too far (tapping the threads), then the adapter bottoms out and you do not have a seal.
Dave
Dave
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From: Concord NC
Originally Posted by 03_PSD
......seemed to break threads on the tap.....get about a half turn with the tap and it would get real tight like it was cutting some threads and then it would come lose when turned some more...........
Good luck and take your time.
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From: NorCal
Originally Posted by IDPisan
Don't forget to suck out the metal shavings from drilling and tapping before you put your thermocoupler in 