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Old 06-29-2011, 08:29 PM   #603
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Originally Posted by Toasty View Post
Hard to see the threads in the cam, Id say... but there's some greyish-whiteish stuff at about the right spot on the threads of the bolt...
I agree. Looks like some type of thread locker compound on the threads of the bolt.
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Old 06-29-2011, 08:41 PM   #604
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Originally Posted by GMGP5X View Post
I agree. Looks like some type of thread locker compound on the threads of the bolt.
if it were darker, I'd be afraid it was anti-seize compound, LOL Good thing it's light colored.
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Old 06-29-2011, 09:54 PM   #605
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I thought it looks like the ARP assembly lube we use for head bolts.
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Old 06-29-2011, 09:57 PM   #606
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Send the bolt off for mass spectrometry gas chromatography....

It'll only cost you $2,400 for a lab to tell you exactly what it is...

J/K

Maybe a few hundred...
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Old 06-29-2011, 11:17 PM   #607
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Quote:
Originally Posted by Toasty View Post
Hard to see the threads in the cam, Id say... but there's some greyish-whiteish stuff at about the right spot on the threads of the bolt...
Quote:
Originally Posted by GMGP5X View Post
I agree. Looks like some type of thread locker compound on the threads of the bolt.
Quote:
Originally Posted by Banshee View Post
I thought it looks like the ARP assembly lube we use for head bolts.
I think I'm leaning with Banshee on this one....in all my years of wrenching, I've yet to ever see white loc-tite.
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Old 06-29-2011, 11:37 PM   #608
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Originally Posted by Huggerorange73 View Post
I think I'm leaning with Banshee on this one....in all my years of wrenching, I've yet to ever see white loc-tite.
Right. Wonder if they used thread sealer instead of threadlocker... wouldn't want lquid to leak into the cam - there are white and/or grey thread sealants.
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Old 06-29-2011, 11:39 PM   #609
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Quote:
Originally Posted by Toasty View Post
Right. Wonder if they used thread sealer instead of threadlocker... wouldn't want lquid to leak into the cam - there are white and/or grey thread sealants.
Correct...there is a HUGE difference between sealants and lockers.
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Old 06-30-2011, 12:45 AM   #610
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Right. Wonder if they used thread sealer instead of threadlocker... wouldn't want lquid to leak into the cam - there are white and/or grey thread sealants.
Hondabond and Suzukibond are whitish grey. They are silicone sealers.
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Old 06-30-2011, 12:53 AM   #611
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Hondabond and Suzukibond are whitish grey. They are silicone sealers.
Honda or Suzuki parts on an LS3? please nooo!!! LOL


Loctite has white thread sealers, too.
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Old 06-30-2011, 11:38 AM   #612
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With regards to the locking compound....does any of it look to be present on this bolt or camshaft threads?
I was going to post this question the other day...but I had to cut out quickly...

Before I make the following statement...let me qualify it. I am not an engineer or mechanic.

That being said. When I installed my cam-bolt(after replacing oil pump...), I noticed lock-tite on the bolt I pulled out (cam was swapped by Vengeance). However with the torque required to install that bolt, I'm not sure that lock-tite would make much difference...but again...I'm not engineer.


As far as a hypothesis....could a rocker/rod/valve failure lead to the cam 'seizing' or becoming locked in place (even for a split second) and the force of the crank on the timing gear cause great enough force on the cam bolt(and pin) so that it would exceed the cam bolt torque?
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Old 06-30-2011, 12:05 PM   #613
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Maybe it's just clear nail polish. That's what I would use on my eyeglasses to keep the little screw from backing out...
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Old 06-30-2011, 01:09 PM   #614
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Originally Posted by Russell James View Post
Now that I see all the valves hit - yup, cam timing moved.

Probably a 1 bolt cam, and the pin is sheared off. After you take the front cover off, you'll probably be giving Comp Cams an earfull.
This. None of the top LS builders use one bolt cams, they all switch the LS3 to 3 bolt style. Its a known weakness in the LS3.
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Old 06-30-2011, 01:23 PM   #615
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I don't care how much you torque a one bolt cam, I don't like the idea of just one bolt. Some may argue that with three bolts you are removing too much material to accomadate three bolts. How much torque would it take to turn a cam with the load of all those valve springs (assuming you are not trying to turn the bottom also)?
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Old 06-30-2011, 01:23 PM   #616
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Quote:
Originally Posted by themossman View Post
I was going to post this question the other day...but I had to cut out quickly...

Before I make the following statement...let me qualify it. I am not an engineer or mechanic.

That being said. When I installed my cam-bolt(after replacing oil pump...), I noticed lock-tite on the bolt I pulled out (cam was swapped by Vengeance). However with the torque required to install that bolt, I'm not sure that lock-tite would make much difference...but again...I'm not engineer.


As far as a hypothesis....could a rocker/rod/valve failure lead to the cam 'seizing' or becoming locked in place (even for a split second) and the force of the crank on the timing gear cause great enough force on the cam bolt(and pin) so that it would exceed the cam bolt torque?
It's possible, but based on how it all went down...I don't think that's what happened.

Quote:
Originally Posted by SSOOCH View Post
Maybe it's just clear nail polish. That's what I would use on my eyeglasses to keep the little screw from backing out...
I thought you used unicorn sperm?

Quote:
Originally Posted by LS3 Machine View Post
This. None of the top LS builders use one bolt cams, they all switch the LS3 to 3 bolt style. Its a known weakness in the LS3.
Indeed it is!
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