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| biggrizzly | Re-Installing Knock Sensors on an LT1 | ||
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2011 Memorial Day Car Show Winner!
 
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I'm getting ready to re-install my knock sensors in the morning. They were new last engine build. (5K miles or so). They have some of the original orange/red thread sealer on them. Are you sure its ok to install them without additional thread sealer? I have read where no additional thread sealer is needed. I just want to double check.
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Posted on: 2011/4/9 3:11
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Don Haller Corvette Club of America 94Coupe, 383Stroka, PeteK Trans, 3000stall, 3.54rear, Konis and bigger sways. |
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| pianoguy | Re: Re-Installing Knock Sensors on an LT1 | ||
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Guru Emeritus
 
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I've had mine out a few times and have never added any thread sealer, just whatever was on there.
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Posted on: 2011/4/9 3:24
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1996 LT4 �Before you criticize someone, you should walk a mile in their shoes. That way when you criticize them, you are a mile away from them and you have their shoes.�- Jack Handey |
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| bogus | Re: Re-Installing Knock Sensors on an LT1 | ||
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Grand Imperial Pooh-Bah
 
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it's not sealer... it's anti-seize.
More isn't gonna hurt. |
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Posted on: 2011/4/9 3:29
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The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me |
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| biggrizzly | Re: Re-Installing Knock Sensors on an LT1 | ||
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2011 Memorial Day Car Show Winner!
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Cool! Thanks guys.
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Posted on: 2011/4/9 3:42
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Don Haller Corvette Club of America 94Coupe, 383Stroka, PeteK Trans, 3000stall, 3.54rear, Konis and bigger sways. |
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| BillH | Re: Re-Installing Knock Sensors on an LT1 | ||
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The Stig Moderator
 
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I've had mine out twice and didn't add anything.
But, I did use a torque wrench. |
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Posted on: 2011/4/9 12:23
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Every man dies but not every man lives. |
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| 95Vert | Re: Re-Installing Knock Sensors on an LT1 | ||
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Senior Guru
 
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Oh, the flashbacks to my adventure with a stuck knocksensor stud in the block. Extremely painful if you guys remember! Finally had to take it to the local garage on the lift to have it taken out.
Antiseize...really? I thought it was thread sealer as well. I should use the antiseize and then torque to spec? |
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Posted on: 2011/4/13 13:32
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| BillH | Re: Re-Installing Knock Sensors on an LT1 | ||
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The Stig Moderator
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I'll have to respectfully disagree with Andy. I think it's sealer. And these are pipe threads so, be careful torquing them. Plus using antisieze would require a 30 to 50% reduction in the torque spec. |
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Posted on: 2011/4/13 13:51
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Every man dies but not every man lives. |
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| Aardwolf | Re: Re-Installing Knock Sensors on an LT1 | ||
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Senior Guru
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The knock sensor is one of several that do not get sealant. If needed use a little toward the very base of the sensor so the beginning threads are uncoated and can make a good ground.
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Posted on: 2011/4/13 14:28
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| ittlfly | Re: Re-Installing Knock Sensors on an LT1 | ||
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Guru Newb
 
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Pay special to the torque spec. As I *recall*, it can be the cause of other problems.
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Posted on: 2011/4/13 23:51
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| PLRX | Re: Re-Installing Knock Sensors on an LT1 | ||
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Senior Guru
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Quote:
The ones on my 95 are stuck, I was on a hurry because I had a run to Lone Pine so I left it alone and just added new Dexcool and water. One of these days I'll need to use a pipe wrench to get them out. One of these days... The knock sensors use sealant and torqued. |
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Posted on: 2011/4/14 19:09
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| Aardwolf | Re: Re-Installing Knock Sensors on an LT1 | ||
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Senior Guru
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Quote:
[IMG]http://i119.photobucket.com/albums/o130/Aardwolfki/Electrical/KS.jpg[/IMG] |
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Posted on: 2011/4/14 22:41
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| BillH | Re: Re-Installing Knock Sensors on an LT1 | ||
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The Stig Moderator
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I use a socket and 1/2 in. breaker bar to loosen the first 1/8th turn with a lot of pressure on the socket with my left hand. When you do it, stick a hose nozzle in the hole and blast it, you'll be amazed at the crap that comes out. Mine have been out twice reusing the factory sealant, torqued, no leaks. |
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Posted on: 2011/4/15 1:14
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| biggrizzly | Re: Re-Installing Knock Sensors on an LT1 | ||
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2011 Memorial Day Car Show Winner!
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14ft.lbs is, like nothing. I did 14 but could not resist to give it a pinch more.
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Posted on: 2011/4/15 1:14
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Don Haller Corvette Club of America 94Coupe, 383Stroka, PeteK Trans, 3000stall, 3.54rear, Konis and bigger sways. |
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| BillH | Re: Re-Installing Knock Sensors on an LT1 | ||
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The Stig Moderator
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Quote:
It's pipe thread, 14 & a pinch will do. |
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Posted on: 2011/4/15 1:18
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| Matatk | Re: Re-Installing Knock Sensors on an LT1 | ||
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Webmaster
 
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I've heard of guys using a little teflon tape or sealant to reduce the sensitivity of the KS, but that's bubbafied. |
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Posted on: 2011/4/15 2:30
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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