what is this?
If it was lifter roller needles I would say that would be more noticeable than rocker needles but I could be wrong . I took my rockers off and spot welded the needle bearing caps 3 spots on each side ,,,,,,,,,,,,I used thin metal to cover as much of the cap/open area that You can see the bearings through where I was'nt spot welding , then readjusted for the next weld and so on ,,,,,,,,,out of 16 rockers ,,,,,1 or 2 took a few to work the little bit of spatter that always makes it's way into spots You don't want , but they all are free rocking again as they were before . I would say the only way to make sure You get all the needles out is to at minimum take the oil pan off ,,,,,and rocker covers and pressure wash the ____ out of it . Good luck
Could the sound be described as a metal rattling/hammering noise under load?
Does it get quieter/go away with driving? (seems unlikely to me..)
I can't get the sound my car makes on a good recording. This is the closest I've came to capturing the noise:
http://www.youtube.com/watch?v=YN98awbhxwM
I took my valve covers off and didn't find anything weird, and I've never found anything in the pan, but one of the previous owners could have swept it under the table of sorts.
I would think.. your car wouldn't be running right at all if you were missing bearings from lifters or rockers..?
Does it get quieter/go away with driving? (seems unlikely to me..)
I can't get the sound my car makes on a good recording. This is the closest I've came to capturing the noise:
http://www.youtube.com/watch?v=YN98awbhxwM
I took my valve covers off and didn't find anything weird, and I've never found anything in the pan, but one of the previous owners could have swept it under the table of sorts.
I would think.. your car wouldn't be running right at all if you were missing bearings from lifters or rockers..?
TECH Regular
Joined: Jul 2011
Posts: 452
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ya, agree ^^^^. the trunnion doesnt have needle bearings, the kit is its own bearing pretty much, more solid and reliable. the stock rocker are more then adequate to handling the job, just initially poorly desinged. i think they started incorporating the trunnion bearings into later year ls models starting in 04 or 05, cant remember if it was the 04 goat or 05 with ls2.
http://forums.corvetteforum.com/c6-z...ngs-issue.html
http://corvettemechanic.com/forum/21...top-valve.html
... that's failed rocker arm bearings in an LS7. Notice how the flimsy sides of the bearing tears open and all the needles fall out ... then show up in the oil pan.
I have piston slap, but I don't think I have rod knock. I've driven 5k miles on this motor with these noises. No metal shavings in the oil.
now it does have some consumption, and it has a leaking RMS, AND the oil smells like gas, coupled with hesitation, which I think is a bad pump or coil or something but that's neither here nor there.
I would think.. if you had something restricting oil flow, that oil pressure would go UP instead of down yes?
my oil pressure is constant at 38-40 when warm. When cold it's closer to 50.
TECH Regular
Joined: Jul 2011
Posts: 452
Likes: 2
No, bad rocker bearings have no influence on oil pressure. A spun crank or cam bearing will have an effect on oil pressure!
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Verdad Gallardo TECH Regular
Joined: Jul 2011
Posts: 452
Likes: 2
Low oil pressure is an indication of bad bearings that have greatly increased their clearance.
