I got a 92 accord ex coupe and i am going to install some pipe plugs in the egr ports and have watched the diy on here for the egr port cleaning. It sais to get 1/2 with 20 tpi which is fine threads. The problem is i can't find a store that has them in 20tpi. Even Fasteners ink don't have them. Is 14 tpi ok to use for this. I am assuming it is cause it is going to have to be but wanted to ask yall.
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EGR Ports using Pipe Plug Replacement Sizes?
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the 14tpi should be no problem, since it's a custom installation the thread choice is really up to you anyway. Just make sure you get a matching tap, of course.
- 1993 Accord LX - White sedan (sold)
- 1993 Accord EX - White sedan (wrecked)
- 1991 Accord EX - White sedan (sold)
- 1990 Accord EX - Grey sedan (sold)
- 1993 Accord EX - White sedan (sold)
- 1992 Accord EX - White coupe (sold)
- 1993 Accord EX - Grey coupe (stolen)
- 1993 Accord SE - Gold coupe (sold)
Current cars:
- 2005 Subaru Legacy GT Wagon - Daily driver
- 2004 Chevrolet Express AWD - Camper conversion
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Originally posted by cp[mike] View Postthe 14tpi should be no problem, since it's a custom installation the thread choice is really up to you anyway. Just make sure you get a matching tap, of course.
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^just from googling, it looks like 1/2-14 is pipe thread (NPT) and 1/2-13 is machine thread. I know you've mentioned pipe plugs afew times on here, so I kinda assumed you had your heart set on pipe thread. I would suggest on waiting til you have the correct tap + the fasteners that you want. Are you doing all 7 ports or just the top 6? W/ the IM yanked I did all 7 with 1/2-13, that size was based on the larger 7th plug that is facing the d/s shock tower. I used set screws wrapped with teflon tape and I've had zero issues. I also more recently did a set of runners for a friend using hollow hex plugs.
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Originally posted by Granite CB7 View Post^just from googling, it looks like 1/2-14 is pipe thread (NPT) and 1/2-13 is machine thread. I know you've mentioned pipe plugs afew times on here, so I kinda assumed you had your heart set on pipe thread. I would suggest on waiting til you have the correct tap + the fasteners that you want. Are you doing all 7 ports or just the top 6? W/ the IM yanked I did all 7 with 1/2-13, that size was based on the larger 7th plug that is facing the d/s shock tower. I used set screws wrapped with teflon tape and I've had zero issues. I also more recently did a set of runners for a friend using hollow hex plugs.
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ok i got 1/2 inch plugs and they cover almost entire egr port. This cant be right. I didn't realize until now that npt is different from nc in actual size. 1/2 14 npt is alot bigger than 1/2 13 nc. So i got a 1/2 13 tpi tap. I guess i have to go back to store again and try to figure this out. This american measurement system sucks. Too bad Jimmy Carter failed in his metric conversion. Would anyone happen to know what size pipe thread plug i need that converts to what i need. NPT to NC i guess.Last edited by zedjr10; 04-26-2017, 10:20 PM.
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^ugh man how did I not spot that, 1/2" NPT is freaking huge! Sorry about that, I kept thinking of my setup w/ the 1/2" machine thread. 1/4"-18 NPT should be right up your alley if you still want to do pipe thread or just continue on w/ the 1/2"-13
http://www.carbidedepot.com/formulas-tap-pipe.htm
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Originally posted by Granite CB7 View Post^ugh man how did I not spot that, 1/2" NPT is freaking huge! Sorry about that, I kept thinking of my setup w/ the 1/2" machine thread. 1/4"-18 NPT should be right up your alley if you still want to do pipe thread or just continue on w/ the 1/2"-13
http://www.carbidedepot.com/formulas-tap-pipe.htm
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Originally posted by Granite CB7 View PostYeah 7/16" sounds about right but does the packaging for the tap/on the tap itself say the correct drill size? I technically am using 1/2-13 set screws and I've even seen people use plain bolts too. As long as you don't have a vacuum leak when you're all done, it can be whatever you want
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I got tap but cant find slide hammer to rent except huge ones(5lbs) that wont work. I did find something that seems perfect. Even has sheet metal screws with it. I don't want to buy it unless i am sure it will work as i can't return it. Here is a link for it at autozone http://www.autozone.com/sandpaper-an...ller/61760_0_0 .
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