Thread: picked up new car/got ?'s

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  1. #1 Re: picked up new car/got ?'s 
    nyls1346
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    Default 05-11-2011
    Exactly my first car was a 95 z28 lol then moved up to the ls1's, this is my daily driver and im fighting with myself to keep it as stock as possible lol, but anyways i was thinking maybe the flexplat is cracked where it mounts to the crank hub, i couldnt really see up there by peeking through the inspection access area, maybe ill try to look with a miirror behind the converter, cause when i am under the car the noise seemed slightly louder by the converter and if it was bearing knock it would have thrown a rod through the block by now lol, 600miles with some wot pulls
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  2. #2 Re: picked up new car/got ?'s 
    redlinepontiac
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    Default 05-10-2011
    yank the heads get a valve job and and deck them .003 and call it a day
    RayRay
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  3. #3 Re: picked up new car/got ?'s 
    nyls1346
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    Default 05-10-2011
    lol im not into changing parts till i find the problem, only reason i did the lifters is cause i had some spare ls7 lifters layin around and my valvecover gasket needed replacing...

    anyone else??..i guess ill just drive it till it dies and then pick up another low mile wrecked gtp and swap the whole unit in lol
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  4. #4 Re: picked up new car/got ?'s 
    nyls1346
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    Default 05-12-2011
    maybe a bad timing chain tensioner???

    i have also noticed that when the cars warms up to about 200deg the noise mostly goes away at idle but the second the touch the throttle u hear it
    Last edited by nyls1346; 05-12-2011 at 09:28 AM.
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  5. #5 Re: picked up new car/got ?'s 
    benner
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    Default 05-12-2011
    Quote Originally Posted by nyls1346 View Post
    maybe a bad timing chain tensioner???

    i have also noticed that when the cars warms up to about 200deg the noise mostly goes away at idle but the second the touch the throttle u hear it
    Metal expanding could be the reason for the noise going away. I've got an exhaust leak that I hear on cold starts that seals itself by the time it warms up.

    Converter is a possibility. My old cammed 98 formula had a similar sound at idle. Almost like a sewing machine style noise. It's possible it could just be the characteristics of the cam that's in there. But I wouldn't count on it.
    No More GTP for me.

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