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  1. #1
    Forum Moderator GOT2B GM's Avatar
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    Additive to quieten down piston slap??

    Just wondering what you 3100 / 3400 guys do to subdue the inevitable piston slap in your cars. Figured this could apply to w-bodies so thats why I posted in the General section.

    My wifeys car is 2000 Alero GLS, that I do all the maintenence on. Its a great running car, only had to do the LIM and both front wheel bearings. ( both inherent 3400 / N-body issues)

    BUT!

    The piston slap drives me nuts, its non existant when warm but when its cold, its a bit obnoxious.

    Any luck with any sort of additives?

    I'm running 5W30 Castrol synthetic and ACD filters.
    Matt Shantz


    '95 Oldsmobile Cutlass Supreme Vert LQ1
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  2. #2
    BXX's Avatar
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    Re: Additive to quieten down piston slap??

    There is nothing you can do to quite piston slap short of redesigning the offset wrist pins, and changine piston to bore clearence...

    Also, our engine have a natural resonance through the cam valley, that makes the noises a little more distinct. And those of us with engine with the hollow cams with pressed on lobes are much more succeptable to noise
    -08 Kia Spectra SX -2.0L BetaII/Auto
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  3. #3
    5speedz34's Avatar
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    Re: Additive to quieten down piston slap??

    Lucas might quiet it down. But I kinda doubt it. I wouldn't use Lucas unless needed.

    Piston Slap is just a nuisance and it goes away in like 5 min.

    BTW-I wouldn't use the ACD filters. They redesigned them a year or two ago and the E-Core filter in them suck. They sometimes fail.


    Tony.V
    1992 Lumina Z34 |3.4L 207ci DOHC 60 V6; Getrag 284|
    1994 Pontiac Grand Prix GTP |3.4L 207ci DOHC 60 V6; Hydra-Matic 4T60E|
    1999 Chrysler 300M |3.5L 214ci SOHC 60 V6; 42LE|

  4. #4
    (╯□)╯ Psych0matt's Avatar
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    Re: Additive to quieten down piston slap??

    quieten?
    '92 5 speed GTP - Mod list _____ '04 Grand Prix GT - Daily Driver


  5. #5
    1990lumina's Avatar
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    Re: Additive to quieten down piston slap??

    My 3.1 sounds like she's gonna blow up in the morning ever since I got the damn car - still knocks away for 3 mins every morning...I guess sort of taking the motor apart you'll have to live with it.
    Jeff L. :: 2nd Canadian to win COTM The Preservation for POS W-bodies Canada Chapter
    2004 Acura TSX | 2.4L I4 iVTEC; 5 Speed Auto | 1 of Many Made In '04 | 89,XXXKM
    1990 Chevrolet Lumina Euro 3.1 | 3.1L 191ci 60 V6; 440T4 | 1 of 43,912 Made In '90 | 194,XXXKM
    1985 Mazda RX-7 S | 1.1L 70ci 12A Twin Rotor RE; 5spd | 1 of 63,105 Made in '85 | 130,XXXKM

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    5speedz34's Avatar
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    Re: Additive to quieten down piston slap??

    Quote Originally Posted by 1990lumina
    My 3.1 sounds like she's gonna blow up in the morning ever since I got the damn car - still knocks away for 3 mins every morning...I guess sort of taking the motor apart you'll have to live with it.
    FWIW: I've never heard a 2.8/3.1 as loud as yours.

    Tony.V
    1992 Lumina Z34 |3.4L 207ci DOHC 60 V6; Getrag 284|
    1994 Pontiac Grand Prix GTP |3.4L 207ci DOHC 60 V6; Hydra-Matic 4T60E|
    1999 Chrysler 300M |3.5L 214ci SOHC 60 V6; 42LE|

  7. #7
    1990lumina's Avatar
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    Re: Additive to quieten down piston slap??

    Quote Originally Posted by 5speedz34
    Quote Originally Posted by 1990lumina
    My 3.1 sounds like she's gonna blow up in the morning ever since I got the damn car - still knocks away for 3 mins every morning...I guess sort of taking the motor apart you'll have to live with it.
    FWIW: I've never heard a 2.8/3.1 as loud as yours.
    Yeah it's pretty noticeable - even the neighbors have asked me if my motor is okay before lol..doesn't burn any oil at all, good compression, just a lil noisey on cold morning. This morning since it was above freezing it barely made any noise. I have a recall letter from 1993 in the Lumina for the piston slap issue, but my grandma never had the recall done lol.
    Jeff L. :: 2nd Canadian to win COTM The Preservation for POS W-bodies Canada Chapter
    2004 Acura TSX | 2.4L I4 iVTEC; 5 Speed Auto | 1 of Many Made In '04 | 89,XXXKM
    1990 Chevrolet Lumina Euro 3.1 | 3.1L 191ci 60 V6; 440T4 | 1 of 43,912 Made In '90 | 194,XXXKM
    1985 Mazda RX-7 S | 1.1L 70ci 12A Twin Rotor RE; 5spd | 1 of 63,105 Made in '85 | 130,XXXKM

  8. #8
    Forum Moderator GOT2B GM's Avatar
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    Re: Additive to quieten down piston slap??



    Quote Originally Posted by 5speedz34

    BTW-I wouldn't use the ACD filters. They redesigned them a year or two ago and the E-Core filter in them suck. They sometimes fail.
    So, what filters would you recommend?



    Quote Originally Posted by Psych0matt
    quieten?
    Yes

    http://www.thefreedictionary.com/quieten
    Matt Shantz


    '95 Oldsmobile Cutlass Supreme Vert LQ1
    '94 Oldsmobile Cutlass Supreme Vert LQ1
    '90 Pontiac Turbo Grand Prix #0058 of 2749
    '92 Pontiac Grand Prix GTP - BAM -282 -
    1Q 2013 COTQ
    '92 Chevrolet Lumina Z34 - 284
    '88 Pontiac Fiero GT - 282
    '01 Cadillac Seville STS - Corsa
    '01 GMC Yukon Denali - GM 22's
    '98 Dodge Dakota Sport - 3.9 V6 - NV3500

    Quote Originally Posted by Mach 5
    Car is machine, Matt is boss status trained precision task killer..









  9. #9
    5speedz34's Avatar
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    Re: Additive to quieten down piston slap??

    Personally, I like NAPA Gold (don't have those in Canada right?) which is identical to WIX. WIX, Purolator are great filters.

    Don't go spending the shit tons of cash on Mobil 1, K/N. They are good also but not worth the cash.

    Tony.V
    1992 Lumina Z34 |3.4L 207ci DOHC 60 V6; Getrag 284|
    1994 Pontiac Grand Prix GTP |3.4L 207ci DOHC 60 V6; Hydra-Matic 4T60E|
    1999 Chrysler 300M |3.5L 214ci SOHC 60 V6; 42LE|

  10. #10
    Forum Moderator GOT2B GM's Avatar
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    Re: Additive to quieten down piston slap??

    We have NAPA, I'll have to check them out.
    Matt Shantz


    '95 Oldsmobile Cutlass Supreme Vert LQ1
    '94 Oldsmobile Cutlass Supreme Vert LQ1
    '90 Pontiac Turbo Grand Prix #0058 of 2749
    '92 Pontiac Grand Prix GTP - BAM -282 -
    1Q 2013 COTQ
    '92 Chevrolet Lumina Z34 - 284
    '88 Pontiac Fiero GT - 282
    '01 Cadillac Seville STS - Corsa
    '01 GMC Yukon Denali - GM 22's
    '98 Dodge Dakota Sport - 3.9 V6 - NV3500

    Quote Originally Posted by Mach 5
    Car is machine, Matt is boss status trained precision task killer..









  11. #11
    5speedz34's Avatar
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    Re: Additive to quieten down piston slap??

    Quote Originally Posted by 93luminaz34
    We have NAPA, I'll have to check them out.
    It has to be the GOLD line.

    Tony.V
    1992 Lumina Z34 |3.4L 207ci DOHC 60 V6; Getrag 284|
    1994 Pontiac Grand Prix GTP |3.4L 207ci DOHC 60 V6; Hydra-Matic 4T60E|
    1999 Chrysler 300M |3.5L 214ci SOHC 60 V6; 42LE|

  12. #12
    rockfangd's Avatar
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    Re: Additive to quieten down piston slap??

    i tried everything on mine and after 4 years i gave up. i still run a full synthetic and fram high mileage and although a little obnoxious i have never had a problem
    rockfangd

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    Re: Additive to quieten down piston slap??

    Just as a heads up, NAPA Silver is made by WIX as well. So is the CarQuest line of filters.

  14. #14

    Re: Additive to quieten down piston slap??

    Quote Originally Posted by rockfangd
    i tried everything on mine and after 4 years i gave up. i still run a full synthetic and fram high mileage and although a little obnoxious i have never had a problem
    You use a Fram? They're gonna eat you alive... I'll back you up though, I use only Fram. (the silver one made for synthetic oils)

    Matt, Have you tried that stuff you use on the LQ1 to QUIETEN it down? Its 4:30am and I just got home from work, the name is escaping me....

    Jamie
    Can't Stand Idiots_MuNkY

    1991 OLDSMOBILE CUTLASS SUPREME INTERNATIONAL - 3.4L DOHC
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  15. #15
    Forum Moderator GOT2B GM's Avatar
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    Re: Additive to quieten down piston slap??

    Restore, and no I haven't tried it yet. I dont wanna throw money at additives that might not work, but I may have to try Restore in it.
    Matt Shantz


    '95 Oldsmobile Cutlass Supreme Vert LQ1
    '94 Oldsmobile Cutlass Supreme Vert LQ1
    '90 Pontiac Turbo Grand Prix #0058 of 2749
    '92 Pontiac Grand Prix GTP - BAM -282 -
    1Q 2013 COTQ
    '92 Chevrolet Lumina Z34 - 284
    '88 Pontiac Fiero GT - 282
    '01 Cadillac Seville STS - Corsa
    '01 GMC Yukon Denali - GM 22's
    '98 Dodge Dakota Sport - 3.9 V6 - NV3500

    Quote Originally Posted by Mach 5
    Car is machine, Matt is boss status trained precision task killer..









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