Jump to content


Welcome to Ultimate Subaru Message Board, my lurker friend!

Welcome to Ultimate Subaru Message Board, an unparalleled Subaru community full of the greatest Subaru gurus and modders on the planet! We offer technical information and discussion about all things Subaru, the best and most popular all wheel drive vehicles ever created.

We offer all this information for free to everyone, even lurkers like you! All we ask in return is that you sign up and give back some of what you get out - without our awesome registered users none of this would be possible! Plus, you get way more great stuff as a member! Lurk to lose, participate to WIN*!
  • Say hello and join the conversation
  • Subscribe to topics and forums to get automatic updates
  • Get your own profile and make new friends
  • Classifieds with all sorts of Subaru goodies
  • Photo hosting in our gallery
  • Meet other cool people with cool cars
Seriously, what are you waiting for? Make your life more fulfilling and join today! You and your Subaru won't regret it, we guarantee** it.

* The joy of participation and being generally awesome constitutes winning
** Not an actual guarantee, but seriously, you probably won't regret it!

Serving the Subaru Community since May 18th, 1998!

Guest Message by DevFuse
 

Photo
- - - - -

Oxygen sensor thread size?


  • Please log in to reply
10 replies to this topic

#1 GeneralDisorder

GeneralDisorder

    Elite Master of the Subaru

  • Members
  • 20,279 posts
  • Portland

Posted 23 October 2006 - 09:03 PM

What size tap am I going to need to clean out the threads on the stock EA82 y-pipe? I've got to do two of these things tommorow. I shattered the first one, and took an impact to it. The sensor threads just disintigrated - left all the thread metal in the cat. So I'm going to have to buy a tap for it since my set doesn't go quite that big....

GD

#2 torxxx

torxxx

    I void warranties

  • Members
  • 2,914 posts
  • Fairbanks

Posted 23 October 2006 - 09:12 PM

12x1.0 IIRC. If no one else posts up an answer I will check one at work tommorow for ya

#3 NorthWet

NorthWet

    Eeyore Incarnate

  • Members
  • 5,039 posts
  • Bremerton, WA

Posted 23 October 2006 - 09:46 PM

IIRC (from 6 years ago :rolleyes: ) it is the same thread as the spark plugs. I used a common dual ended sparkplug tap/chaser... 18mm/14mm?

#4 GeneralDisorder

GeneralDisorder

    Elite Master of the Subaru

  • Members
  • 20,279 posts
  • Portland

Posted 23 October 2006 - 09:58 PM

Hhhhmmmm - old spark plug with some grooves cut in the threads, and a slight taper ground at the end? :rolleyes:

I'll take a look at that.

Thanks a bunch!

GD

#5 NorthWet

NorthWet

    Eeyore Incarnate

  • Members
  • 5,039 posts
  • Bremerton, WA

Posted 23 October 2006 - 10:18 PM

... or $5-10 for a proper hardened-steel chaser... bought mine at NAPA

#6 GeneralDisorder

GeneralDisorder

    Elite Master of the Subaru

  • Members
  • 20,279 posts
  • Portland

Posted 23 October 2006 - 10:26 PM

Yeah - I should probably own one anyway. But I'm all about "feild expediency" as we used to call it.... you should see the neutral switch I created today.... any excuse to use my welder I suppose.

GD

#7 NorthWet

NorthWet

    Eeyore Incarnate

  • Members
  • 5,039 posts
  • Bremerton, WA

Posted 23 October 2006 - 10:33 PM

All well and good... until you try to clean galled/welded threads out of that weld-hardened bung. :rolleyes: How many modified splugs do you want to wear out in the process? Mine was a (minor) bear to clean out even with the chaser. Me, I am in to "lazy" when I can. :grin:

#8 GeneralDisorder

GeneralDisorder

    Elite Master of the Subaru

  • Members
  • 20,279 posts
  • Portland

Posted 23 October 2006 - 10:46 PM

Heh - if one plug doesn't do the trick, it's off to the tool department.

Last time I took one of these out, it actually came out (big fight tho). This time it just ate the threads. Pretty ugly really.

GD

#9 NorthWet

NorthWet

    Eeyore Incarnate

  • Members
  • 5,039 posts
  • Bremerton, WA

Posted 24 October 2006 - 01:10 AM

Yeah, I ripped all the threads of of mine... well, it was my bro-in-law's, but now it is mine. EGO sensor came out looking pretty smooth where all of the threads were supposed to be. That was before I read that there was a procedure for removing EGOs (something like: warm engine, turn EGO 1/4 turn, spray on penetrant and go away for 24 hours before turning again).

#10 GeneralDisorder

GeneralDisorder

    Elite Master of the Subaru

  • Members
  • 20,279 posts
  • Portland

Posted 24 October 2006 - 01:36 AM

That's a nice procedure! Too bad the y-pipe isn't on a car yet. :rolleyes:...... and I already tore it out with my impact. Hooray for air! Quicker to cut the thing off, impact it, and then chase the threads. Whole countries have been overthrown in 24 hours. :burnout:

GD

#11 daeron

daeron

    Cunning Linguist

  • Members
  • 3,600 posts
  • West Palm Beach

Posted 24 October 2006 - 05:19 AM

wonderful timing for this thread, i need to replace my O2 sensor and we have a couple spares at the shop.. now I just need to look up the vehicle whence they came, and see if this matches the subie. thanks guys :- )

oh and spark plug thread chasers FTW:headbang: every cheap*ss needs one.




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users