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Found out why my motor developed..

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Old 10-31-2005, 08:57 AM
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Default Found out why my motor developed..
Since 2 track outtings ago my car developed a valve tick. I didnt really have time to figure it out and I assumed it was a bent valve. Took the engine out and when I removed the valve cover I found 3 rockers has lost their needle bearings. The sides were blownout and the needle bearings were in the oil pan.
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Old 10-31-2005, 09:00 AM
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ouch. i had a buddy with a 98 that had the same problem.
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Old 10-31-2005, 09:23 AM
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That's strange, I didn't expect Jesel to have that problem.
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Old 10-31-2005, 09:29 AM
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I believe the Jesels are going in his new motor. That is an odd situation but everything has it's breaking/failure point.
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Old 10-31-2005, 09:29 AM
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This was my old motor with the factory rockers.
Phil
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Old 10-31-2005, 09:34 AM
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Originally Posted by Phil99vette
This was my old motor with the factory rockers.
Phil
ok, makes a bit more sense to me now
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Old 10-31-2005, 10:02 AM
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wow..never heard stock rockers doing that before..sorry to hear.
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Old 10-31-2005, 10:13 AM
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Originally Posted by SAM98WS6
wow..never heard stock rockers doing that before..sorry to hear.

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Old 10-31-2005, 10:29 AM
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I guess stock rockers, 7000+ rpm and XER lobes don't mix.
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Old 10-31-2005, 10:35 AM
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Yes but you've had them on there how long? I'd have to say they held up quite well !
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Old 10-31-2005, 11:19 AM
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They have less than 2000 miles on them. I have only put 7k on the car since I have owned it.
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Old 10-31-2005, 11:21 AM
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Oh, okay...then yikes !
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Old 10-31-2005, 11:23 AM
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Did anything else get hurt?
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Old 10-31-2005, 11:31 AM
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Everything else looks to be ok. cam lobes are fine and the pushrods look good. Can't imagine how much power it was down, it went 10.12 @ 140.1 last time out with a slow 60'.
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Old 10-31-2005, 11:32 AM
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And people want to keep the stock rockers in there motors. I have seen it dozens of times.

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Old 10-31-2005, 11:56 AM
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Are there any alternatives/options for replacing stock rockers other than expensive aftermarket rocker arms?
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Old 10-31-2005, 12:12 PM
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Originally Posted by Nasty N8
And people want to keep the stock rockers in there motors. I have seen it dozens of times.

Nate


And there are people here that promote using the stock rockers...
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Old 10-31-2005, 12:20 PM
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Yes, get with Nate. He offers a Harland Sharp modification, in which they replace the trunion on your stock rockers. I had it done, although my LS1 isnt finished yet
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Old 10-31-2005, 12:31 PM
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Yes true but you must realize that Phil is probably pushing 600+ rwhp. IMO, the stockers are good for 400-500 rwhp. If someone isn't pushing those numbers why buy a set of 500 dollar rocker arms?
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Old 10-31-2005, 12:35 PM
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The needle bearings falling out is a common problem. I'm trying to figure out why power would mean anything for rockers. I would think they would be rpm related.
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