Spark Plug Replacement
Thread Starter
Burning Brakes
Joined: Apr 2008
Posts: 1,190
Likes: 68
From: Woodland Hills California
Spark Plug Replacement
Replaced the plugs on my 2008 Coupe. I put anti-seize on the threads of the new plugs. Torqued to manufacturer's spec of 11 ft-lbs for replacement plug. Then I noticed that the service manual states not to use thread lubricants unless specified. I know that thread lube influences torque. I went a bit beyond the torque wrench click, so final torque is likely higher than 11. Any opinions on this?
Also, I did not read anything about using silicone grease on the plug cap. I thought this was standard on high voltage ignition systems. Not on Corvette?
Also, I did not read anything about using silicone grease on the plug cap. I thought this was standard on high voltage ignition systems. Not on Corvette?
Le Mans Master
Joined: Dec 2005
Posts: 7,002
Likes: 1,687
From: Southeast TX
You're fine as long as you didn't put so much of that lovely never sneeze on the plugs that it got on the business end of the plug. Also, hope you didn't get any on your person. That stuff is notorious for coating things anywhere near the target app site
. I always use a little dielectric stuff on the plug wire end too. I have no idea whether either is "recommended". I use it because there have been more than a few instances where I wished that I had. Yes, if you're a mullet, it's easier to over torque the plugs with any type of lubricant/never seize. If you used a tq wrench set a 11, I'm sure you're OK.
. I always use a little dielectric stuff on the plug wire end too. I have no idea whether either is "recommended". I use it because there have been more than a few instances where I wished that I had. Yes, if you're a mullet, it's easier to over torque the plugs with any type of lubricant/never seize. If you used a tq wrench set a 11, I'm sure you're OK.
Racer
Joined: Jun 2013
Posts: 251
Likes: 0
From: Atlanta Ga
You always want to use anti seize on the plugs and a dab of electrical grease on the boots. Its a must with aluminum heads. Nothing worse than breaking off a plug in a head. You will be fine just as long as they were tight in there
