Can't get my sparkplug to thread..HELP!! - LS1LT1 Forum : LT1, LS1, Camaro, Firebird, Trans Am, Engine Tech Forums

Welcome to LS1LT1.com/LS3forums.com - please click here to register...

 
LinkBack Thread Tools
post #1 of 5 (permalink) Old 01-13-2010, 10:56 PM Thread Starter
Regular Member
 
Join Date: Sep 2009
Location: Muskogee, OK
Posts: 214
 
Exclamation Can't get my sparkplug to thread..HELP!!

I have a 1997 trans am lt1 (alum heads) my num 5 spark plug doesnt wanna seem to get started on the threads. i just did a full head job on the car and havent drove it in prolly three months.. I NEED It back asap. could i just get a tap and start the threads on the first few or what. btw its not comfortable to get to...thanx guys
ls14life is offline  
Sponsored Links
Advertisement
 
post #2 of 5 (permalink) Old 01-13-2010, 11:14 PM
Regular Member
 
Join Date: Aug 2008
Location: Pennsylvania
Posts: 360
 
"Full Head Job" should have included cleaning up the threads while it was out and readily accessible.

I'd use a chase, not a tap, at least at first. Most auto parts stores will have them. Also, I'd get a mirror down in there and see what's going on. If you have access to a borescope, that would be better.

If you tried forcing it even slightly with a wrench, you could have crossthreaded the plug and getting that straightened out with the manifold on is gonna be a real pita.

if you have access to a lathe, I'd take a plug, turn the first few threads off real close to the minor diameter, use that new diameter as a pilot in the hole, and then start over. You'd also have to manually remove one thread then to first make sure it would start in a new hole with no troubles. The lathe will roll back one thread and of course that won't work. You might have to tap a dummy piece of aluminum or something to test with before going into the head.

With no hope of fixing it on the car if the tap starts cooked, I'd be skeptical about trying to reform threads that way. What might work, though I've never tried this, would be a rollform tap. At least it won't remove material. They're not intended for deep holes, and not intended for hand use, but it might be good enough to get you started, which is all you want.

Anti-Sieze paste should go on these things all the time anyhow. Never assemble aluminum parts without it. I just rebuilt my engine and every single hole was chased and pasted. Every one.
4Mesh is offline  
post #3 of 5 (permalink) Old 01-14-2010, 01:02 PM Thread Starter
Regular Member
 
Join Date: Sep 2009
Location: Muskogee, OK
Posts: 214
 
wow man thanx for the input im sure i can get im at school now on my way home im gonna see if i can get a chase. thanx again
ls14life is offline  
post #4 of 5 (permalink) Old 01-14-2010, 01:19 PM
Regular Member
 
chrys95's Avatar
 
Join Date: Mar 2009
Location: Phoenix AZ
Posts: 2,664
 
if you havent added antifreeze to your car since you put the heads back on i would just pull the one off that needs attention. much safer and easier to see whats going on. i know it can be a pain, but it better than screwing something up because you cant see...

Chrys

96 Formula M6- Pacesetter LT's, ORY, Flowmaster exhaust, cc500, AIR/EGR!, 4.10's, Z06 wheels.

Quote:
Originally Posted by preston View Post
i crouched down and she laid down between my legs rolled over onto her back and just stared at me.
chrys95 is offline  
post #5 of 5 (permalink) Old 01-17-2010, 01:58 AM Thread Starter
Regular Member
 
Join Date: Sep 2009
Location: Muskogee, OK
Posts: 214
 
i used a sparkplug chase and it did the job for me. thanx guys...
ls14life is offline  
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the LS1LT1 Forum : LT1, LS1, Camaro, Firebird, Trans Am, Engine Tech Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome