Stripped spark plug hole! - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 06-01-2008, 05:14 PM
Blackdog's Avatar
Member
 
Last photo:
Join Date: Sep 2004
Location: Zillah Washington
Age: 65
Posts: 132
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Stripped spark plug hole!

1990 Toyota 4X4 PU, 3.0 V6 (Just got it for cheap, had a broken timing belt)

While replacing my timing belt I had to bring #1 up on the compression stroke. This is when I found that #1 plug hole was stripped. Only the first 3 or so threads are damaged. Any advice on repairing this without removing the head?
I seen somewhere in a magazine that there is a tool that you insert into the hole than cut threads from the inside out, ever seen one of these?
I just spent $300 on a timing set, pulleys, water pump, etc and now this!

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 06-01-2008, 05:22 PM
Member
 
Last wiki edit: Ford axle ratio codes
Last journal entry: Rear Suspension
Last photo:
Join Date: Aug 2005
Location: Prattsville
Posts: 6,349
Wiki Edits: 31

Thanks: 2
Thanked 53 Times in 49 Posts
you can get spark plug heli coils. just drill it slow and put a lot of grease on the drill bit, to catch the shavings, keep it clean too. then do the same with the heli coil tap, lots of grease and keep it clean.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 06-01-2008, 05:29 PM
sprecher48's Avatar
Oddo nut
 
Last wiki edit: VW engine basics
Last journal entry: sorry i've been laid up for awhile.
Last photo:
Join Date: Apr 2007
Location: sunny south(maybe rainy,haven't looked outside today) florida
Age: 66
Posts: 139
Wiki Edits: 10

Thanks: 0
Thanked 0 Times in 0 Posts
re; stripped spark plug hole

there are also several co's make an insert that threads into the hole. The kit has 2 taps 1 coarse,1 finish, of course,do the grease trick and use air to blow out the hole, put it in with locktite (usually supplied with the kit) and replace the plug. They come in several lengths.good luck! Tom

Last edited by sprecher48; 06-01-2008 at 05:29 PM. Reason: misspelling
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 06-01-2008, 06:10 PM
406 bug's Avatar
9.82 @ 139mph
 
Last wiki edit: Finding vacuum leaks Last photo:
Join Date: Nov 2007
Location: phoenix, arizona
Posts: 581
Wiki Edits: 1

Thanks: 0
Thanked 1 Time in 1 Post
Are you sure there is no damage to the valve train?? sometimes when a belt goes the valves collide with the pistons. With respect to the plug- since you pulled it out I assume you can get it back in. That being the case, take some JB weld or other epoxy, coat the threads and tread in back in. Plugs will last for 80,000 plus miles so what the hay!!!!
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 06-01-2008, 06:24 PM
Jmark's Avatar
Hotrodders.com Moderator
 
Last photo:
Join Date: Sep 2003
Location: phoenix
Age: 61
Posts: 4,786
Wiki Edits: 0

Thanks: 0
Thanked 3 Times in 3 Posts
Quote:
Originally Posted by 406 bug
. That being the case, take some JB weld or other epoxy, coat the threads and tread in back in. Plugs will last for 80,000 plus miles so what the hay!!!!
ROFLMAO!!! Yea Baby,,,I like how you think, must be a redneck like me! (is everyone in AZ like you and me? LOL)

Mark
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 06-01-2008, 06:38 PM
406 bug's Avatar
9.82 @ 139mph
 
Last wiki edit: Finding vacuum leaks Last photo:
Join Date: Nov 2007
Location: phoenix, arizona
Posts: 581
Wiki Edits: 1

Thanks: 0
Thanked 1 Time in 1 Post
[QUOTE=Jmark]ROFLMAO!!! Yea Baby,,,I like how you think, must be a redneck like me! (is everyone in AZ like you and me? LOL)

Mark[/QUOTE


you got it . I order bailing wire in the 100yard reels!!!!!!!!!!
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 06-01-2008, 06:48 PM
Registered User
 
Last photo:
Join Date: Jun 2007
Location: TN.
Posts: 287
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Quote:
Originally Posted by 406 bug
Are you sure there is no damage to the valve train?? sometimes when a belt goes the valves collide with the pistons. With respect to the plug- since you pulled it out I assume you can get it back in. That being the case, take some JB weld or other epoxy, coat the threads and tread in back in. Plugs will last for 80,000 plus miles so what the hay!!!!
3.0 toyota is not an interference engine, valves should be fine.

sam-missle
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 06-01-2008, 07:00 PM
scrot's Avatar
Registered User
 
Last photo:
Join Date: Apr 2006
Location: In front computer
Posts: 449
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Just how stripped is the hole?
It was holding the spark plug, right?
Try chasing the hole with a spark plug tap, and see if it clears up the threads any.
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 06-01-2008, 11:31 PM
powerrodsmike's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Make a fiberglass fan shroud
Last journal entry: Next.. ..Bagging the king B (barge)
Last photo:
Join Date: Jan 2005
Location: gilroy, california
Age: 53
Posts: 4,108
Wiki Edits: 161

Thanks: 0
Thanked 3 Times in 3 Posts
K-D makes a kit for putting the insert in, IIRC it's about 15.00-20.00..You drill and tap the hole oversize then stake the insert in place..I've done a couple of them on our Acura...Like others said, use a blowgun with a tube attached down in the cylinder and keep blowing the chips out of the sparkplug hole.


later, mikey
__________________
my signature lines...not really directed at anyone in particular..

BE different....ACT normal.

No one is completely useless..They can always be used as a bad example
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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:

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.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Spark Plug Tech ChevelleSS_LS6 Engine 17 06-28-2006 08:45 AM
Spark Plug wire looms and Ram Horn exhaust mainfolds Jag Daddy Engine 6 07-19-2005 09:13 PM
Cylinder pressure vs. spark plug gap 70bird Engine 3 05-28-2005 08:25 PM
spark plug gap 74huggerorange Engine 6 12-29-2002 09:18 AM
bolt hole stripped holding carb down impala dreaming Engine 12 12-20-2002 05:41 PM


All times are GMT -6. The time now is 10:01 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.