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Piston slap LS3 - this is very interesting

redvxr8clubby

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As most people here know Holden replaced my engine after 35000km due to really bad piston slap.
The new motor has now done 7000km and I am starting to hear it again. Nowhere near as bad as the first time but still audible....Most people would not notice it..
I do think that most engines have this but level varies based on internal tollerances...
Pure chance really...which pistons will join which block on the assembly line...

So what did they do regards the engine number Ron? New number, or stamped the replacement block with same as original then destroy original?
My VX Clubby had engine replaced, it's marked in the log books as replaced engine, but the log books show correct engine number. I bought the car in June 2006, it was originally sold and first registered in April 2001 (October 2000 build). I believe with all the issues with early LS1's that Holden had replacement blocks stamped with same engine as original, then destroy the old block.
 

Ron Burgundy

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So what did they do regards the engine number Ron? New number, or stamped the replacement block with same as original then destroy original?
My VX Clubby had engine replaced, it's marked in the log books as replaced engine, but the log books show correct engine number. I bought the car in June 2006, it was originally sold and first registered in April 2001 (October 2000 build). I believe with all the issues with early LS1's that Holden had replacement blocks stamped with same engine as original, then destroy the old block.

New engine number. Just updated the details with RMS so paperwork reflects the new engine number. New engine number starts with LS3... as it is a service motor.. i.e. they build some long motors that come as one 'spare part'..
 

Skylarking

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^ the new replacement engine obviously had its own manufacturing number stamped on it at the plant in Mexico and the dealer just updated the rego authorities of this replacement number...

So the car no longer has the original motor, which down the track some people seem to have issues with but I’d not be concerned...

edited: Ron got there first :p
 

Ron Burgundy

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^ the new replacement engine obviously had its own manufacturing number stamped on it at the plant in Mexico and the dealer just updated the rego authorities of this replacement number...

So the car no longer has the original motor, which down the track some people seem to have issues with but I’d not be concerned...

edited: Ron got there first :p

Exactly. So the engine will always have 35000km less mileage than the odometer shows...
 

Mayuri Krab

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This, after reading all of Ron's posts I got super paranoid of the various noises mine made. I drive down an alley to get in and out of the garage so hear every little thing reflected off the walls.

I found if it's a car you care about, you are always forever getting paranoid about new noises, new quriks etc etc... every bloody time you drive thr dam thing! Lol

For me 1st it was the "ticking" noise at idle, crawl speed, after enough research and opinions and conviced myself it was just a normal engine sound.

Then it was RON's whole post about piston slap and I'm starting to hear random new noises again... after that it was "hmmm the tranmission doesn't seem to be shifting smooth"... after I got it serviced at a transmission specialist shop, we are back to hearing random different noises at cold and warm engine again... <sigh>

Bought a Mitsubishi 380 for $3.5k as my daily beater and I never hear any "noises" or notice anything when I'm driving that car... think the front suspension is getting a bit worn, might look into it at next service end of the year lol

What's the view of US customers regarding this noise? Do they just accept it or is GM in strife with multiple claims too?

I read a bunch of thread from US "LS-derived" car forums (Chevy SS, Covertte, Camaro plus some GM pick up truck forums) and the general consensus from the yanks seem to be "little bit of slap noise at cold is ok" and many are quick to point that their LSx powered vehicle (from Camaro to GM pick up trucks) had that slap noise and was still running fine (no excess oil consumption & noise didn't get any worse) after 80k to 100k miles when they sold it...

Gives me a bit of hope that my car can run past 160k km with no major issues lol
 
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Anthony121

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Exactly. So the engine will always have 35000km less mileage than the odometer shows...
I don't think a change of motor would affect the car. A car with a knocking engine might.
 

Skylarking

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... the general consensus from the yanks seem to be "little bit of slap noise at cold is ok" and many are quick to point that their LSx powered vehicle ... had that slap noise and was still running fine (no excess oil consumption & noise didn't get any worse) after 80k to 100k miles when they sold it...

Gives me a bit of hope that my car can run past 160k km with no major issues lol
I’ve heard of old clunkers with 4.2l and 5.0l V8’s getting >>300,000 kms without major work or engine rebuilds so I expected the same from a modern LS3. In my view, a breed should get better with each generation and not worse as longevity is as important as environmental concerns and power improvements in a road vehicle.

Sadly I really doubt LS3’s will last any where near those old aussie engines. And to make matters worse, with LS3’s it is recommended (not by Holden) that lifters and pushrods are done at 100,000km intervals. Guess maintenance costs are going to be higher than i initially expected.

Meanwhile, the fact the yanks sell their cars at 128,000 to 160000 kms is probably telling of the quality of the car and the mindset within the market place. Add that to the fact Boing is in all sorts of strife related to quality control and quality engineering, it’s rather telling of the situation north or the rio grand, where quality seems to take a back seat... even in aerospace engineering :eek:

Pity Mitsubishi didn’t make a well priced rear drive V8 sedan.... closest they got to it downunder was a supercharged V6 AWD :rolleyes:

Well, I’ve still got warranty left so hopefully the dealers and Holden won’t be as frustration as they have been in the past though I won’t hold my breath. I think it’s time to take the beast out for a drive a little later today and all will be forgiven in this love/frustration relationship :p
 

Ron Burgundy

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I’ve heard of old clunkers with 4.2l and 5.0l V8’s getting >>300,000 kms without major work or engine rebuilds so I expected the same from a modern LS3. In my view, a breed should get better with each generation and not worse as longevity is as important as environmental concerns and power improvements in a road vehicle.

Sadly I really doubt LS3’s will last any where near those old aussie engines. And to make matters worse, with LS3’s it is recommended (not by Holden) that lifters and pushrods are done at 100,000km intervals. Guess maintenance costs are going to be higher than i initially expected.

Meanwhile, the fact the yanks sell their cars at 128,000 to 160000 kms is probably telling of the quality of the car and the mindset within the market place. Add that to the fact Boing is in all sorts of strife related to quality control and quality engineering, it’s rather telling of the situation north or the rio grand, where quality seems to take a back seat... even in aerospace engineering :eek:

Pity Mitsubishi didn’t make a well priced rear drive V8 sedan.... closest they got to it downunder was a supercharged V6 AWD :rolleyes:

Well, I’ve still got warranty left so hopefully the dealers and Holden won’t be as frustration as they have been in the past though I won’t hold my breath. I think it’s time to take the beast out for a drive a little later today and all will be forgiven in this love/frustration relationship :p

I plan to sell mine before the motor acumulates 100 000km :)
Possibly even sooner if another issue pops up that makes me mad...
 

Banjo79

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Your all over it Ron.
 
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