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-   -   rocker arm fell off spring (https://www.camaroz28.com/forums/lt1-based-engine-tech-9/rocker-arm-fell-off-spring-502833/)

ZL1modified Feb 16, 2007 07:15 PM

rocker arm fell off spring
 
i think i found out where that sound was coming from...

holy hell... how did this happen? i didn't even mess with these guys...

the push rod looks straight...

can i reuse it?

any suggestions

[IMG]http://img264.imageshack.us/img264/7...e005qg1.th.jpg[/IMG]

[IMG]http://img443.imageshack.us/img443/1...e006le5.th.jpg[/IMG]

wrd1972 Feb 16, 2007 07:21 PM

The rocker was loose and it slipped off. The end of the rocker is self aligning, thats the purpose of those two small raised ridges to keep it on the valve.

Look at the top of the valve stem and make very sure it is still flat and NOT rounded over.

This happened to me with a roller rocker and the valve stem was damaged and had to be replaced.

ZL1modified Feb 16, 2007 07:40 PM

the push rod looks strait and the valve stem looks flat...

i ran it for a bit like that...

do you think i could just try to put it back on and adjust all of the rr's?

do you suppose the lifter is collapsed?

Dave89IROC Feb 16, 2007 07:43 PM

very closely inspect the valve spring, a broken spring can do the same thing

ZL1modified Feb 17, 2007 05:35 AM

ok, i take it that it is not a big deal or means that something terrible is wrong...

thank you for your help guys

wrd1972 Feb 17, 2007 07:24 AM

You might think about getting some roller rockers with poly locks or just poly locks at a minimum. The poly locks make setting proper rocker lash a lot easier.

Oxygen454 Jul 15, 2007 12:19 AM

What are poly locks?

SS RRR Jul 15, 2007 05:31 AM


Originally Posted by Oxygen454 (Post 4736691)
What are poly locks?

Google is such a wonderful tool:

http://www.speedwaymotors.com/eccSto...15-99788_L.jpg

You see the allen screws in the center? Those are poly locks. After adjusting the rocker nut the poly lock is then tightened down to keep the adjusting nut from backing off.

Oxygen454 Jul 15, 2007 05:45 AM

Thanks for the info! Great pic too. Will give that a shot, Im guessing they are somewhat inexpensive?

quickSS Jul 15, 2007 08:03 AM

ZL1modified,
when you put it back together pay close attention to the motor when you go WideOpenThrottle.
Usually, when a rocker falls off it's due to the engine being in detonation....(most call it rattle). A bit too lean or too much timing when at WOT will make the motor rattle (overly aggressive PCM tune). Oil pump pickups, oil pump drive gears, broken valve springs, rockers falling off, that's all the indication of rattle.
At least that's been the case with my junk.

Karl


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