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Bent Con Rod!! Why

This is a discussion on Bent Con Rod!! Why within the General Help forums, part of the LSx Technical Help Section category; I tore my 98 LS1 down tonight and found that the #6 rod was bent. I was thinking it was ...

  1. #1
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    Bent Con Rod!! Why

    I tore my 98 LS1 down tonight and found that the #6 rod was bent. I was thinking it was caused by a faulty injector causing a lean condition and detonating that cylinder. I spoke to my friends father who is a mechanic and he says its probably due to over revving. For one I believe the ECM shuts fuel off at 6200rpm and secondly it was in an automatic. So I kind of doubt its due to over revving. Does anyone have any idea why a con rod would get bent? I did take off the heads and there was no head gasket leak, so hydrolock is not the answer.
    Thanks all.

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    Does the vehicle ever get wet? A leaky o-ring from the injector will allow water past it and allow the car to hydrolock the car.

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    something had to have gotten in that's non compressable like water.
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    collapsed lifter possibly...

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    I'm not sure if it had a leaky oring. I pulled the engine from a friends car because it was making a knocking sound. The cylinder is clean. There is no sign of moisture or surface rust in the cylinder. I'll check the lifters.

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    Water will evaporate in the chamber, basically "steam cleaning" the cylinder walls.

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    Quote Originally Posted by JoshieDoom View Post
    Does the vehicle ever get wet? A leaky o-ring from the injector will allow water past it and allow the car to hydrolock the car.
    this happend to me. very possible

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    a collapsed lifter will not bend a connecting rod. now, if the OP is refering to the pushrod being bent, that's a different matter.
    Last edited by mrr23; 07-08-2009 at 10:45 AM.

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    Quote Originally Posted by mrr23 View Post
    a collapsed lifter will not bend a connecting rod. now, if the OP is refering to the pushrod being bent, that's a different matter.
    :agree: Two differnt things.

    If you bent a CONNECTING rod, something got in there that does not compress.

  10. #10
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    wouldn't detonation cause a bent rod? Two opposing forces.

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    it would have to be a huge amount. and i mean a huge amount. the head gasket would go first. i know as i've done it. after racing and popping the head gasket, i drove my car home and cracked the exhaust port. no bent rod


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