C6 Tech/Performance LS2, LS3, LS7, LS9 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

Spark plug torque value??

Thread Tools
 
Search this Thread
 
Old 11-28-2016, 05:48 PM
  #1  
C U IN REARVEIW
Le Mans Master
Thread Starter
 
C U IN REARVEIW's Avatar
 
Member Since: Jan 2009
Location: ocean springs mississippi
Posts: 5,656
Received 110 Likes on 101 Posts

Default Spark plug torque value??

Changing plugs in my car......they are in there very tight.....is there a torque specs for these being an aluminum motor? Or did my tuner just put them in to tight?
Old 11-28-2016, 05:52 PM
  #2  
BlindSpot
Le Mans Master
 
BlindSpot's Avatar
 
Member Since: May 2016
Location: LWR, FL
Posts: 5,117
Received 1,368 Likes on 907 Posts
Default

Originally Posted by C U IN REARVEIW
Changing plugs in my car......they are in there very tight.....is there a torque specs for these being an aluminum motor? Or did my tuner just put them in to tight?
First, is the engine cold?...must be completely cooled down before taking out the old plugs. Torque new plugs to 11 ft.lbs. No anti-seize if you're using NGK iridiums.

Last edited by BlindSpot; 11-28-2016 at 05:53 PM.
Old 11-28-2016, 06:17 PM
  #3  
C U IN REARVEIW
Le Mans Master
Thread Starter
 
C U IN REARVEIW's Avatar
 
Member Since: Jan 2009
Location: ocean springs mississippi
Posts: 5,656
Received 110 Likes on 101 Posts

Default

Cold motor yes.....coming out REALLY HARD
Old 11-28-2016, 10:38 PM
  #4  
Cherokee Nation
Le Mans Master
 
Cherokee Nation's Avatar
 
Member Since: Jan 2008
Location: corpus christi Texas
Posts: 6,431
Received 290 Likes on 271 Posts

Default

Originally Posted by C U IN REARVEIW
Changing plugs in my car......they are in there very tight.....is there a torque specs for these being an aluminum motor? Or did my tuner just put them in to tight?
Did the tuner put in new plugs?
Old 11-29-2016, 04:50 AM
  #5  
User Omega
Melting Slicks
 
User Omega's Avatar
 
Member Since: Mar 2016
Location: Indianapolis IN
Posts: 2,211
Received 230 Likes on 208 Posts
Default

They should provide a little resistance at first. Once broken loose they will be super easy unless they are cross threaded or were over tightened.

How many miles since they were installed?
Old 11-29-2016, 08:56 AM
  #6  
timd38
Race Director
 
timd38's Avatar
 
Member Since: Aug 2005
Location: Hudson WI
Posts: 13,598
Received 181 Likes on 162 Posts
NCM Sinkhole Donor

Default

Aluminum head, steel plug and no anti seize will make the plugs tough to remove because of galvanic corrosion
Old 11-29-2016, 09:03 AM
  #7  
BlindSpot
Le Mans Master
 
BlindSpot's Avatar
 
Member Since: May 2016
Location: LWR, FL
Posts: 5,117
Received 1,368 Likes on 907 Posts
Default

Originally Posted by timd38
Aluminum head, steel plug and no anti seize will make the plugs tough to remove because of galvanic corrosion
That's "old school".

Plug manufacturers now plate the threads with a plating compatible with aluminum. Google NGK.
Old 11-29-2016, 09:29 AM
  #8  
timd38
Race Director
 
timd38's Avatar
 
Member Since: Aug 2005
Location: Hudson WI
Posts: 13,598
Received 181 Likes on 162 Posts
NCM Sinkhole Donor

Default

Originally Posted by BlindSpot
That's "old school".

Plug manufacturers now plate the threads with a plating compatible with aluminum. Google NGK.
Well, I am old!

Thanks for the update information.
Old 11-29-2016, 09:41 AM
  #9  
BlindSpot
Le Mans Master
 
BlindSpot's Avatar
 
Member Since: May 2016
Location: LWR, FL
Posts: 5,117
Received 1,368 Likes on 907 Posts
Default

Originally Posted by timd38
Well, I am old!

Thanks for the update information.
No problem...I'm old too...took me a while to let go of the anti-seize...
Old 11-29-2016, 05:49 PM
  #10  
AORoads
Team Owner
 
AORoads's Avatar
 
Member Since: Jun 2005
Location: Northern, VA
Posts: 46,106
Received 2,481 Likes on 1,944 Posts
St. Jude Donor '15
"In honor of jpee"

Default

Does hurt to "toothbrush off" the plug threads? (not wire)
Old 11-30-2016, 12:10 AM
  #11  
C U IN REARVEIW
Le Mans Master
Thread Starter
 
C U IN REARVEIW's Avatar
 
Member Since: Jan 2009
Location: ocean springs mississippi
Posts: 5,656
Received 110 Likes on 101 Posts

Default

Originally Posted by User Omega
They should provide a little resistance at first. Once broken loose they will be super easy unless they are cross threaded or were over tightened.

How many miles since they were installed?
About 6-7k miles
Old 11-30-2016, 01:13 AM
  #12  
User Omega
Melting Slicks
 
User Omega's Avatar
 
Member Since: Mar 2016
Location: Indianapolis IN
Posts: 2,211
Received 230 Likes on 208 Posts
Default

So are they out now and everything is fine or are you still having trouble?
Old 11-30-2016, 01:27 PM
  #13  
C U IN REARVEIW
Le Mans Master
Thread Starter
 
C U IN REARVEIW's Avatar
 
Member Since: Jan 2009
Location: ocean springs mississippi
Posts: 5,656
Received 110 Likes on 101 Posts

Default

Originally Posted by User Omega
So are they out now and everything is fine or are you still having trouble?
Yeah got them out....now this
Old 11-30-2016, 06:51 PM
  #14  
User Omega
Melting Slicks
 
User Omega's Avatar
 
Member Since: Mar 2016
Location: Indianapolis IN
Posts: 2,211
Received 230 Likes on 208 Posts
Default

Why are you replacing them? Just curious.
Old 11-30-2016, 07:11 PM
  #15  
C U IN REARVEIW
Le Mans Master
Thread Starter
 
C U IN REARVEIW's Avatar
 
Member Since: Jan 2009
Location: ocean springs mississippi
Posts: 5,656
Received 110 Likes on 101 Posts

Default

Originally Posted by User Omega
Why are you replacing them? Just curious.
#1 cylinder plug is much darker than the rest....just making sure nothing is wrong. Ie: compression test/scope
Old 11-30-2016, 08:40 PM
  #16  
User Omega
Melting Slicks
 
User Omega's Avatar
 
Member Since: Mar 2016
Location: Indianapolis IN
Posts: 2,211
Received 230 Likes on 208 Posts
Default

Good to check it all out. I could be something as simple as an injector that varies in flow from the others. Keep us updated.
Old 11-30-2016, 10:24 PM
  #17  
C U IN REARVEIW
Le Mans Master
Thread Starter
 
C U IN REARVEIW's Avatar
 
Member Since: Jan 2009
Location: ocean springs mississippi
Posts: 5,656
Received 110 Likes on 101 Posts

Default

Originally Posted by User Omega
Good to check it all out. I could be something as simple as an injector that varies in flow from the others. Keep us updated.
Will do

Get notified of new replies

To Spark plug torque value??

Old 12-01-2016, 09:22 AM
  #18  
xBoostx
Melting Slicks
 
xBoostx's Avatar
 
Member Since: Jun 2006
Location: Miami Florida
Posts: 2,442
Received 251 Likes on 196 Posts

Default

Originally Posted by C U IN REARVEIW
Yeah got them out....now this
Check valve springs for broken coil and check rockers too on #1 cylinder.
Old 12-01-2016, 10:06 AM
  #19  
timd38
Race Director
 
timd38's Avatar
 
Member Since: Aug 2005
Location: Hudson WI
Posts: 13,598
Received 181 Likes on 162 Posts
NCM Sinkhole Donor

Default

Originally Posted by xBoostx
Check valve springs for broken coil and check rockers too on #1 cylinder.
I had a bad coil and got that look.
Old 12-01-2016, 06:24 PM
  #20  
C U IN REARVEIW
Le Mans Master
Thread Starter
 
C U IN REARVEIW's Avatar
 
Member Since: Jan 2009
Location: ocean springs mississippi
Posts: 5,656
Received 110 Likes on 101 Posts

Default

Originally Posted by xBoostx
Check valve springs for broken coil and check rockers too on #1 cylinder.
All springs looked good...didn't pay much attention to the rockers...but nothing stood out.


Quick Reply: Spark plug torque value??



All times are GMT -4. The time now is 04:52 AM.