Engine Noise, round 2
12-26-2011, 08:11 AM
#11
as a gm tech, i can tell you the motor will be torn down and everything measured to determine weather it gets new pistons, or a new long block, and if you get a long block, you will be waiting a while. the 6.2's are on back order. i currently have a customers denali thats been out in the lot for 4 weeks waiting on a 6.2, and i thought about purchasing the core my self, and even at my discount the core is like 2k.
the problem that is happening is be cause the block and pistons expand at two different rates. if you fire it up and let it warm up for a few mins without driving right away it will be ok, but most ppl just hop in and go, and depending on your driving habits it will beat on the cyl walls.
all 5.3's and 6.2's have nominal piston slap, it is acceptable to a point. just depends how bad it is.
the problem that is happening is be cause the block and pistons expand at two different rates. if you fire it up and let it warm up for a few mins without driving right away it will be ok, but most ppl just hop in and go, and depending on your driving habits it will beat on the cyl walls.
all 5.3's and 6.2's have nominal piston slap, it is acceptable to a point. just depends how bad it is.
I am quite sure my noise is not piston slap, heard that before many times. My noise is a hard knock, from one cylinder, as opposed to the marbles in a can noise piston slap makes.
Could be wrong we'll see when they take it apart.
I almost always start mine on the remote and let it warm a bit.
What about an lsx long block, will the 6.2 intake and accessories bolt on??
Could be wrong we'll see when they take it apart.
I almost always start mine on the remote and let it warm a bit.
What about an lsx long block, will the 6.2 intake and accessories bolt on??
01-11-2012, 05:32 PM
#12
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Dropped it off for surgery Tuesday a.m.
They gave me an 2012 lt for a loaner, man that thing is quiet.
So, Gm customer service calls me today, in his broken English [he is ok but speaks really fast, might be French Canadian] says something about piston rings yadayada.
I was busy when he called, so I couldn't quiz him.
I really hope these guys are not going down the AFM oil use and stuck piston ring route.
My 6.2 does not have AFM nor the oil consumption and noisey lifter stuff that goes with it.
Not going to judge yet, I hope they get it right.
They gave me an 2012 lt for a loaner, man that thing is quiet.
So, Gm customer service calls me today, in his broken English [he is ok but speaks really fast, might be French Canadian] says something about piston rings yadayada.
I was busy when he called, so I couldn't quiz him.
I really hope these guys are not going down the AFM oil use and stuck piston ring route.
My 6.2 does not have AFM nor the oil consumption and noisey lifter stuff that goes with it.
Not going to judge yet, I hope they get it right.
Last edited by Allgonoshow; 01-11-2012 at 05:39 PM.
01-12-2012, 02:06 PM
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The dealer that is servicing my truck sends 60-70k a year worth of business to my shop.
Anyway, they are putting pistons in it, don't know why yet.
01-12-2012, 04:07 PM
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I'm speechless.
The tributes from those that know him are so, so kind.
Never met the man,but he was always the guy that welcomed newbies and steered them along, shared his experience and was curiuos about what he didn't know.
Speechless
rip Billy