Kumaro95

Trying to get my fresh lt1 running and noticed some noise from the valve covers and pulled off all the rockers and found 3 rockers on 3 different cylinders hitting the valve spring retainers. Any ideas? I have Lloyd LE2 heads with comp 1.6 and 7.05 push rods. Pattern on the valve stem is a hair toward the exhaust side.
None of the other rockers have any evidence of wear.

Paul Bell

iTrader: (9)

Those appear to be self aligning roller rocker arms.

You cannot use them with pushrod guide plates AND you need to make sure the valve stem is sticking up enough to let it ride on the roller without the arm sides hitting the valve keeper.

Which of these caused your problem?

Kumaro95

I'm not running guide plates and it looks like they have clearance that's why there not all like that. I'm thinking my buddy who adjusted them didn't do a good job. Because it seemed like they felt sloppy before I took them off

stevo9389

wow that is a lot of damage. how long was the motor running before you pulled the valve cover to check it out?

SS RRR

iTrader: (2)

Could be the rockers were not adjusted properly and they walked. What do your valve tips look like?

93M6Formula

I'm going with bad rocker adjustment. What method did your buddy use?

kinglt-1

iTrader: (26)

I have a set of 1.6 pro mags FS if you are interested....PM me.

SS RRR

iTrader: (2)

I should emphasize you paying attention to the valve tips. If they got hammered the hardening may be gone and they will start to mushroom. The cheapest/easiest fix is to get lash caps, but with those you may need to get different pushrods. You can find that out by checking the valve sweep.
Read up if you are unfamiliar with valvetrain geometry:

http://www.hotrod.com/how-to/engine/...rain-geometry/

Kumaro95

Luckiley the valves tips look ok. The motor was probably ran 30 minutes. I've got replacement rockers, so I'm going just Adjust them myself and see. The procedure that I know is exhaust sides starts to open, adjust intake, I take starts to close, adjust exhaust. Using a 1/4 turn then tighten poly locks

SS RRR

iTrader: (2)

Several methods:

http://shbox.com/1/4th_gen_tech2.html#adjust_valves

EOIC is probably the most accurate.

myltwon

iTrader: (1)

I prefer the while running method personally, using the typical motor off adjustment for a baseline then readjust while running. It's very easy to misadjust them with the motor off due to lifter bleed down or simply not reading the valve events properly.

Kumaro95

Everything seems ok I just took it out for a drive, my valvetrain still isn't quiet but I didn't have anything around the garage to prevent oil from getting everywhere to do the running method to see if it would improve my results. Now im paranoid one of these rockers is gonna pop off again.

Kumaro95

By the way what do you guys think of my valve tip pattern?

guppymech

iTrader: (7)

How much valve stem do you have protruding from the lock? My factory heads have .125 to .150 of valve stem showing.

93M6Formula

That sweep looks good to me.

SS RRR

iTrader: (2)

Yep. Sweep looks perfect. If anything you want it to be a little on the exhaust side.