Kiroshu

If you tighten the nuts the hold the valve cover on to tight and smash the roubber grommets does it make the valve chatter louder?

myyota

No, it shouldn`t.

Kiroshu

I was just wondering some old guy told me that if they are too tight it will make the vavle chatter way bookoo loud.....

toyota4x4907

Yes, if you tighten them too much the rockers will strike the inside of the VC and make it "Bookoo loud"

iamsuperbleeder

I've heard of it happening, but never encountered it myself

Kiroshu

See thats what i was thinking i thought that old man was kinda werid saying it was noise escaping from the grommets.

algranger

If you have valve chatter just adjust your valve lash no matter how loud it is]. I wouldnt think the grommets would make any noticeable difference

874runnersr5

Yeah, i doubt the grommets have any play on the noise.
i hate thoese things to.

qdude79

Two things I noticed after getting my rebuilt back: 1) Excessive chatter after three different valve adjustments 2) Valve cover grommets appear "smashed."

Any trick to changing these out?? I'll be glad to be the guinea pig!

Kiroshu

Yea i dunno i'm still tinkering on how to lower noise....course it might be my chain...but i has new fairly new chain guides... chain is original though...

qdude79

Alright, looked up torque specs, supposed to be a measly ~5.5 ft lbs. I'd be VERY surprised if the smashed sandwiches under those acorns are torqued only to ~5.5 ft lbs, or new with the rebuild. Gonna order new ones tomorrow and install correctly. Will report any change/improvements.

arizonaguy

yea tighten the hell out of um that ul do the trick and smash the vc gasket down good.

rdlsz24

You probably didn't need new ones. Just back the nuts off and tighten them until they are somewhat tight.

Rob

toyospearo

I tightened them too much way back when I used to know it all and disregarded FSM instructions.
I fired it up and it sounded like someone had a BFH and a punch inside my ear tapping like there was no tomorrow.

Kiroshu

So tightening then too tight can cause lifters to hit the inside of valve cover causing bookoo noise. will that mess up the Valve cover from lifters hitting it?

yoterr

hermm my truck sounds kinda like a diesel after rebuild, thought it was valve chatter but it looks all good maybe this is it??

Slowstrike

very possible the 5.5 spec is just over hand tight if they even look crushed they are most likely too tight

qdude79

Changed 'em! The were crushed, alright! I'm guessing they were the originals reused. Sure to guess that it'll not weep a small film of oil, and the acorn nuts were definitely overtightened. Won't know about knocking, etc. 'til I drive it tomorrow. I'll keep you posted.

Jay351

Dammit, I think I did this when I installed the valve cover after doing the timing chain. I installed three new grommits (the forth wouldnt fit into the valve cover) and I thought I torqued it to spec, but couldnt tell. The rubber just cept compressing... bah!

I hear a chatter under load, this this is it???

BigBluePile

iTrader: (3)

Jay, it could be. I know that when my buddy pick up his '88 pickup it was CRAZY loud. The motor had had a full rebuild on it. I loosened up the nuts on the valve cover because the motor shop that did my rebuild had warned me about that. It made a HUGE difference!!