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5.3 rocker failure "pics inside"

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Old Sep 30, 2019 | 02:28 PM
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Default 5.3 rocker failure "pics inside"

Surprisingly the cylinder wall only has just a couple of places I can barley feel with my fingernail, might be ok with just a quick hone.

I was thinking the DOD lifter failed but it appears to be fine and pushrod/cam was fine.
Seems like the rocker arm just came apart getting off the tip of the valve stem, breaking the spring, and causing the valve to drop?







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Old Sep 30, 2019 | 06:14 PM
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I'll bet the spring broke first allowing the rocker to get out of alingment and allowing the valve to drop. Do those rockers have the trunion upgrade? What springs? What engine RPM at failure? Were the springs checked for proper installed height? Coil bind? Just a few things that popped into my head. The rockers hardley ever fail except with some trunion bearing replacement parts then they generally just make alot of noise and scatter little bearings through out your engine
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Old Sep 30, 2019 | 06:25 PM
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Guess I should have mentioned it was 100% stock and a 50 year old woman was driving it at the time. Just wanted to post it here to kinda document it. Right at 200,000 miles
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Old Sep 30, 2019 | 07:44 PM
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Time for the bushing upgrade! It was destined to happen sooner or later.
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Old Sep 30, 2019 | 11:07 PM
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Originally Posted by Ls7colorado
Guess I should have mentioned it was 100% stock and a 50 year old woman was driving it at the time. Just wanted to post it here to kinda document it. Right at 200,000 miles
Yeah... drove it 1/4 mile at a time right? To church, even... go Granny go.... LOL
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Old Oct 1, 2019 | 12:23 AM
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This Is the same engine they don't want to put any money into right??
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Old Oct 1, 2019 | 05:41 AM
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And 1 owner! Lol, she may be lead footed though no idea.
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Old Oct 1, 2019 | 05:43 AM
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Originally Posted by G Atsma
Yeah... drove it 1/4 mile at a time right? To church, even... go Granny go.... LOL
Yep, got a very clean junkyard engine though.
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Old Oct 1, 2019 | 06:57 AM
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Luv'ing it.... Tell a person my Granny will kick your ∆$$... She broke a valve spring and rocker last time out. You don't want any parts of this. Fix Granny up so she can get back to kicking but..

Granny FTW.
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