#2 cyl spark plug hole striped.
Team Owner
Joined: Dec 1999
Posts: 34,873
Likes: 487
From: Lacey WA RVN 68-69
NCM Sinkhole Donor
The best way is to pull the head and have a Heli-coil installed. A "thread chaser" may work but if it sounds like there is too much damage for it to work. If you do try that, make sure that the cylinder is completely cleaned out. You don't want any shavings or strips of aluminum getting between the piston and cylinder wall 
Drifting
Joined: Dec 2007
Posts: 1,647
Likes: 4
From: Argillite KY
The best way is to pull the head and have a Heli-coil installed
Use some anti-sieze on the replaced plug so this doesn't happen again. It can do no additional damage and if it doesn't work no harm....no foul. I suspect that it will be OK though. Good luck and only pull the head as a last resort. ---Gunny---
Pro
Joined: Aug 2010
Posts: 617
Likes: 17
From: Hamilton Ontario
This looks promising....in the C4 For Sale section
http://forums.corvetteforum.com/c4-p...tore-tool.html
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http://www.amazon.com/KD-Tools-Inter.../dp/B000J4K01G I had a bad time starting 1 plug and destroyed the first few threads.
This thing saved my life and worked wonders.
Insert into hole, turn thumb screw, and the tap opens up using the good threads inside to start. Cleans everything up.
After using plug went right in. Great for cleaning up rusted threads. Leaves NO shavings in bore.
$50 shipped Will trade for a 1995 auto shift console in excellent cond
http://forums.corvetteforum.com/c4-p...tore-tool.html
**************************************** ************************
http://www.amazon.com/KD-Tools-Inter.../dp/B000J4K01G I had a bad time starting 1 plug and destroyed the first few threads.
This thing saved my life and worked wonders.
Insert into hole, turn thumb screw, and the tap opens up using the good threads inside to start. Cleans everything up.
After using plug went right in. Great for cleaning up rusted threads. Leaves NO shavings in bore.
$50 shipped Will trade for a 1995 auto shift console in excellent cond
Burning Brakes
Joined: Feb 2010
Posts: 1,013
Likes: 2
From: California City Ca
Always start the plug by hand tighten by hand only until it bottoms out tourqe to spec's.
Use Anti Sieze.
If the plug not going in as normal STOP dont force it dont use Air tools to start any parts alway start it by hand this will save you lots of heart aches.
Now If you were in a NASCAR race doing a tire change air tools is the way to go.
Use Anti Sieze.
If the plug not going in as normal STOP dont force it dont use Air tools to start any parts alway start it by hand this will save you lots of heart aches.
Now If you were in a NASCAR race doing a tire change air tools is the way to go.
Thread Starter
Heel & Toe
Joined: Jan 2012
Posts: 24
Likes: 0
Tucson here, OK I bought the 6 INCH B-D BACK-TAP AND I got it in the spark plug hole, but when I thread it out it hits the upper A-arm so it don't come out all the way, I know I got a post from Siveck with the same #2 cyl problem can yon tell me the trick.
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Safety Car
Joined: Apr 2011
Posts: 3,660
Likes: 22
Loosen the motor mounts and jack the block up a couple inches to give you some clearance.
I will 2nd what Marv says.....except I'll add that you should NEVER EVER work on warm aluminum when threading plugs or anything else that you cannot see, and never use a tool to start the threads. Always clean at least your bolt or plugs threads if a chaser is not available. A wire brush of the plug threads can save your life.
Aluminum threads are made of butter when they are warm. Treat them like that and you'll be ok.
I will 2nd what Marv says.....except I'll add that you should NEVER EVER work on warm aluminum when threading plugs or anything else that you cannot see, and never use a tool to start the threads. Always clean at least your bolt or plugs threads if a chaser is not available. A wire brush of the plug threads can save your life.
Aluminum threads are made of butter when they are warm. Treat them like that and you'll be ok.
Thread Starter
Heel & Toe
Joined: Jan 2012
Posts: 24
Likes: 0
Thanks for the reply. I did get the tool to do the job and it worked great. What I did for the clearance problem was loosened the upper A-ARM two inner bolts half way. The car is running good now. Thanks to all. I Am glad to be on this forum.
Beats the hell out of removing the head. 
Le Mans Master
Joined: Mar 2002
Posts: 5,889
Likes: 2
From: Castro Valley Calif.
St. Jude Donor '03 thru '26
Safety Car
Joined: Sep 2004
Posts: 3,953
Likes: 550
From: Mission Viejo CA
I like to use a 6" piece of rubber tubing on the spark plug insulator to start the plugs. Guide the plug with one hand, and spin it with the other. Especially handy on that darn #8 plug!
