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Thread: exhaust rattle

  1. #1

    Default exhaust rattle

    i got a 90 celica alltrac with three inch exhaust that rattles all to hell. i took it to the exhaust place and they told me "its to big for the space i have." any ideas or help please.
    John
    90 Celica All-Trac, SOLD

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  2. #2
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    They might be right, have you tried getting under the car and rattling the exhaust yourself to determine from where the noise is originating?
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    Hrm.. I find that hard to believe to be honest.

    I know a 3" exhaust fits just find on a st162 and st165, with no rattles. It sounds more like one of the mounts/supporting brackets came loose.
    Jasmine - 1989 GTS. GenIV 3s-gte, e153 LSD transmission, 3" turbo-back exhaust. SOLD

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  4. #4

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    Is it a custom exhaust or a bolt up prefab from a manufacturer? If it's custom it could just be poorly done.

    If it's a bolt up, has it always rattled or did it develop over time?

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  5. #5

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    No Tim, mine rattles as well.

    The issue is likely similar to mine.
    I purchased the "kit" but was given the ST205 midpipe.
    That MP is the cause of my issue.
    I fixed it mostly with patience and a torch and ball-peen hammer.

    Easiest will likely be to bring it to an exhaust shop, get it on the lift and see where the contact points are.
    Then you can adjust accordingly.

    If it is the front section of the MP above the cross-member, you can buy longer bolts and use a flat washer/lock-washer combo to space it out about 1/4".
    Just make sure the bolts are high grade. I used grade 8.
    The necessary hardware was purchased at NAPA Auto Parts.

    Another cause could be improper alignment of the pipes.
    There is a small bit of play room you can use to make minute adjustments to how the system hangs together.
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  6. #6
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    Quote Originally Posted by Shadowlife25 View Post
    No Tim, mine rattles as well.

    The issue is likely similar to mine.
    I purchased the "kit" but was given the ST205 midpipe.
    That MP is the cause of my issue.
    I fixed it mostly with patience and a torch and ball-peen hammer.

    Easiest will likely be to bring it to an exhaust shop, get it on the lift and see where the contact points are.
    Then you can adjust accordingly.

    If it is the front section of the MP above the cross-member, you can buy longer bolts and use a flat washer/lock-washer combo to space it out about 1/4".
    Just make sure the bolts are high grade. I used grade 8.
    The necessary hardware was purchased at NAPA Auto Parts.

    Another cause could be improper alignment of the pipes.
    There is a small bit of play room you can use to make minute adjustments to how the system hangs together.
    That's strange Mario. Jeremy here had a full 3" custom built on his st205 in is 162 coupe with no rattles at all (unless you count rod knock lol). Maybe the 5th gen doesn't have room for the 3" like the 4th gen does.
    Jasmine - 1989 GTS. GenIV 3s-gte, e153 LSD transmission, 3" turbo-back exhaust. SOLD

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  7. #7

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    The ST185 and ST205 mounting locations are similarly located, but oriented differently.
    Then there is the difference in the actual bend that occurs between the two in the path they take to the rear from the DP back.

    ChrisD has comparison photos from a few years back.
    Perhaps he can find them again.
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  8. #8

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    I had it on the lift at the shop yesterday and got to look. I was able to move it and make it rattle myself. The issue is right where it comes up from the midpipe to go over the rearend, the crossmember there is the first rattle, the escond and third are above all the rear axel and differential parts in places i cant get to. I was going to try high temp tubing or some softer anything to muffle the sound till i can find a lift and determin the issue my self since my town is full of old people and muscle cars who know nothing about imports. and yes im still fresh too but we all gotta start somewhere right. thank you all for the support and help. will post pictures if i can.
    *edit* i was just going to slam it and see if it smushes the tubing or stops the rattle but that may me a bad idea i am not sure. ideas?
    Last edited by allTRACway; 05-11-2010 at 02:12 PM.
    John
    90 Celica All-Trac, SOLD

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  9. #9

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    Same thing happen on my st165. Had to bend lip of the subframe where the exhaust hitting to get rid of the noise.

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