Thread: Scraping noise at low speeds.

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  1. #1 Re: Scraping noise at low speeds. 
    GXP Level Member Zef_66's Avatar
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    Wait, what? You bent pushrods and then replaced the timing chain? Did you break the chain? What exactly happened and how long ago? Could shed some light.
    2001 GSE
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  2. #2 Re: Scraping noise at low speeds. 
    GTP Level Member Bedwards's Avatar
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    I have the huge long thread about the car not starting after the cam install. It ended up being the valve keepers on upside down. Mangled a bunch of pushrods. Would that stretch the chain though?
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  3. #3 Re: Scraping noise at low speeds. 
    GT Level Member RegalGS98s's Avatar
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    Please list everything that has been changed and broke since that other thread started. 22 pages is a lot to fish through. This would help everyone.
    SMGPFC #0330 - 3.25, Intercooled, Custom Tune, 1.84rr, LS6 Springs, roller timing chain, SLP Headers, Borla Exhaust, built Trans, B&M Trans Cooler, home cut poly uppers, gapless rings, N* TB, Ported heads.
    Soontocome: CAM?, Custom modified M112, home poured Poly Engine and Trans mounts
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  4. #4 Re: Scraping noise at low speeds. 
    GTP Level Member Bedwards's Avatar
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    New parts:

    VS cam
    G8 springs and retainers
    Stock pushrods
    Stock timing chain and dampener
    LS7 lifters
    Stock valve seals
    All new gaskets (head, LIM, front cover, water pump, supercharger etc.)
    Passenger CV joint/axle
    Passenger side ball joint

    LS7 lifters, new pushrods, new gaskets, new valve seals, axle and the ball joint were all put in after the valve keeper incident.
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  5. #5 Re: Scraping noise at low speeds. 
    GT Level Member RegalGS98s's Avatar
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    Quote Originally Posted by Bedwards View Post
    New parts:

    VS cam
    G8 springs and retainers
    Stock pushrods
    Stock timing chain and dampener
    LS7 lifters
    Stock valve seals
    All new gaskets (head, LIM, front cover, water pump, supercharger etc.)
    Passenger CV joint/axle
    Passenger side ball joint

    LS7 lifters, new pushrods, new gaskets, new valve seals, axle and the ball joint were all put in after the valve keeper incident.
    I'm leaning towards the timing chain stretching if it went through that abuse. And my bad, I didn't catch what you had written at the bottom at first.
    SMGPFC #0330 - 3.25, Intercooled, Custom Tune, 1.84rr, LS6 Springs, roller timing chain, SLP Headers, Borla Exhaust, built Trans, B&M Trans Cooler, home cut poly uppers, gapless rings, N* TB, Ported heads.
    Soontocome: CAM?, Custom modified M112, home poured Poly Engine and Trans mounts
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  6. #6 Re: Scraping noise at low speeds. 
    GTP Level Member Bedwards's Avatar
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    I know timing belts stretch... But I've never heard of a chain stretching. I know they wear, but this chain is brand new. Couldn't have worn that fast. The only thing I can think of is if the tensioner was somehow lose, and the chain was rubbing on the block or something. But even still, I get no noise when the car is up on jacks, in drive.
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  7. #7 Re: Scraping noise at low speeds. 
    GTP Level Member Bedwards's Avatar
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    Quote Originally Posted by RegalGS98s View Post
    Which of those new parts went through the valve retainer incident?
    Parts that went through the incident, which are still on the car:

    VS cam
    G8 springs and retainers
    Stock timing chain and dampener

    All the other parts are fresh and went in afterwards.
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