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Piston slap LS3 - this is very interesting

Discussion in 'VF Holden Commodore (2013 - 2017)' started by Ron Burgundy, Jan 21, 2020.

  1. redvxr8clubby

    redvxr8clubby Active Member

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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.
     
  2. Ron Burgundy

    Ron Burgundy Well-Known Member

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    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'..
     
  3. Skylarking

    Skylarking Well-Known Member

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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
     
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  4. Ron Burgundy

    Ron Burgundy Well-Known Member

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

    Mayuri Krab Member

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    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

    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
     
    Last edited: Jan 24, 2020
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  6. Anthony121

    Anthony121 Well-Known Member

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    I don't think a change of motor would affect the car. A car with a knocking engine might.
     
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  7. Skylarking

    Skylarking Well-Known Member

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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
     
  8. Ron Burgundy

    Ron Burgundy Well-Known Member

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

    Ron Burgundy Well-Known Member

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  10. Banjo79

    Banjo79 Active Member

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    Your all over it Ron.
     
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  11. Pablito

    Pablito Well-Known Member

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    My L98 VE SS has a little bit of piston slap when cold for the majority of it's life and that thing still runs like a dream at 165,000 kms.
    Only things it's needed in 12 years was a new alternator and battery 3 years ago at about 145k kms.
    My VF SS makes the same slight piston slap noise when cold too. 80,000 kms and all good so far..........
     
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  12. Skylarking

    Skylarking Well-Known Member

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    ^^^ what do you expect from used car dealer :p Isn’t it common knowledge they’d sell their grandmothers lap rug to make a $ :oops:
     
  13. Derekthetree

    Derekthetree Active Member

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    The ad is full of amazing opportunities for interpretation.

    "FIRST TO SEE WILL BUY!!" - just don't use your ears.

    "THIS IS YOUR OPPORTUNITY TO OWN A PIECE OF HISTORY" Legal history?! o_O

    "LOTS MORE VEHICLES TO CHOOSE FROM ON-SITE........" - i.e. don't buy this one

    So if its up for the same price, with another 7 months and 1200km, does that mean prices are rising!
     
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  14. VS 5.0

    VS 5.0 Well-Known Member

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    My VS 5 litre had 292,xxx on it when I sold it....never opened and ran like a dream. The purchaser couldn't believe how quiet the motor was.
     
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  15. rucxy

    rucxy Donating Member

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    That is good news to hear mate, my 06 SS-V with the L98 has just clocked over 91k km's without any piston slap that i can hear.
    Only a hint of valvetrain noise as i have removed the beautification cover and have VF2 340kw headers on it and is only noticeable when the bonnet is lifted.
     
  16. Mayuri Krab

    Mayuri Krab Member

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  17. Merv53

    Merv53 Member

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    Very interesting reading all these comments about piston slap. It seems more common than I imagined. My
    Ls3 has 35,000km on it and fortunately I have not heard any strange noises. Can someone tell me whether I would have heard the noise by now at 35,000km if I was going to experience this problem, or can the noise start up at any time?
     
  18. Paulie81

    Paulie81 Active Member

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    yeah with that many kms I imagine it would have popped up by now. I noticed it with mine around 14,000kms.
     
  19. greenacc

    greenacc Searching for the billion

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    Has anyone had their block rebored to cure the ovality and fit oversized pistons?
    It would cost a bit but would be a lot nicer engine afterwards.
     
  20. 07GTS

    07GTS Well-Known Member

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    the minimal error factory built production engines have wouldnt be worth the hassle just for a more round bore (LS7 and LS9 are hand built), BUT if ur rebuilding the engine anyway its a given to get it done right, each piston is measure and each cylinder is bored to suit that piston going into it, make sure crank is flat and cylinders square to the crank and deck square to the crank also, the factory blocks are a smidge out all over the place compared to a properly machined block
     

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