noisy valve-train?

01-03-2002, 11:09 PM

I did 1.7 roller rockers, the crane lightning cam, and the tfs spring kit, and my valve train is really noise, not so much clicking like it is out of adjustment, you can just really hear what sounds like the rollers on the rocker tips, or something to the effect. Anyone else have this?

------------------
Jason Brown
94'-1928

01-03-2002, 11:52 PM

Do you have the Pedelstals or the studs?
Usually noise on the upper end is attributed to too much lash, especially if you just put on a new component,ie rocker arms.
I just adjusted the rockers on a aluminum headed brand X. We went 1/2 turn past zero lash and was noisey. Probably will take a full turn to quiet them down. You might need to subtract some shim clearance(pedelstals) or lash down further(studs).BTW, Do a visual to the roller-valve stem interface to make sure the roller tip is in the middle of the stem.
Hope this helps
Later
Steve

------------------
94 Crimson #2826
Born May 6, 1994
NLOC member #343
Team Powerdyne,
13.49@ 102mph
Wanting 12's
Home page: http://www.topworldmusic.com/greased/

[This message has been edited by sstock (edited 01-03-2002).]

01-04-2002, 12:00 AM

i have the pedestal mount cobra roller rockers. I went through the whole lifter preload thing several times, all the valves read between .020", and .060" like they are supposed to. There isn't a knocking, or a clattering, if i take out shims, there is a sort of knocking, so i can't do that.

------------------
Jason Brown
94'-1928

01-04-2002, 12:16 AM

Jason, did you happen to check to see that the cobra's are not hitting the valve covers?
I imagine that could make a racket. I read a post awhile ago and seem to remember the oil baffle needs to be trimmed or something. Others might chime in with their experience.

01-04-2002, 03:02 AM

I did the cobra rockers, crane L cam, and new valve springs during Christmas myself. At first the drivers side sounded like it was clicking but it went away after a few miles of driving. The cobra roller rockers will not hit the oil baffle or at least it hasn't in the trucks that I know of. Also my trans decided to die on me after I did the mods and now I am waiting for my new level 10 trans and billet converter to arrive. Good luck.

01-04-2002, 02:24 PM

mine passenger side does that too, although it goes away really quick after startup. I noticed a huge difference after the swap, it's worth all the effort.

------------------
Jason Brown
94'-1928

01-03-2002, 11:09 PM	#1 (permalink)
points Guest Posts: n/a View this user's gallery iTrader: / %	noisy valve-train? I did 1.7 roller rockers, the crane lightning cam, and the tfs spring kit, and my valve train is really noise, not so much clicking like it is out of adjustment, you can just really hear what sounds like the rollers on the rocker tips, or something to the effect. Anyone else have this? ------------------ Jason Brown 94'-1928

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01-03-2002, 11:52 PM	#2 (permalink)
sstock Guest Posts: n/a View this user's gallery iTrader: / %	Do you have the Pedelstals or the studs? Usually noise on the upper end is attributed to too much lash, especially if you just put on a new component,ie rocker arms. I just adjusted the rockers on a aluminum headed brand X. We went 1/2 turn past zero lash and was noisey. Probably will take a full turn to quiet them down. You might need to subtract some shim clearance(pedelstals) or lash down further(studs).BTW, Do a visual to the roller-valve stem interface to make sure the roller tip is in the middle of the stem. Hope this helps Later Steve ------------------ 94 Crimson #2826 Born May 6, 1994 NLOC member #343 Team Powerdyne, 13.49@ 102mph Wanting 12's Home page: http://www.topworldmusic.com/greased/ [This message has been edited by sstock (edited 01-03-2002).]

01-04-2002, 12:00 AM	#3 (permalink)
points Guest Posts: n/a View this user's gallery iTrader: / %	i have the pedestal mount cobra roller rockers. I went through the whole lifter preload thing several times, all the valves read between .020", and .060" like they are supposed to. There isn't a knocking, or a clattering, if i take out shims, there is a sort of knocking, so i can't do that. ------------------ Jason Brown 94'-1928

01-04-2002, 12:16 AM	#4 (permalink)
sstock Guest Posts: n/a View this user's gallery iTrader: / %	Jason, did you happen to check to see that the cobra's are not hitting the valve covers? I imagine that could make a racket. I read a post awhile ago and seem to remember the oil baffle needs to be trimmed or something. Others might chime in with their experience.

01-04-2002, 03:02 AM	#5 (permalink)
94BOLT Guest Posts: n/a View this user's gallery iTrader: / %	I did the cobra rockers, crane L cam, and new valve springs during Christmas myself. At first the drivers side sounded like it was clicking but it went away after a few miles of driving. The cobra roller rockers will not hit the oil baffle or at least it hasn't in the trucks that I know of. Also my trans decided to die on me after I did the mods and now I am waiting for my new level 10 trans and billet converter to arrive. Good luck.

01-04-2002, 02:24 PM	#6 (permalink)
points Guest Posts: n/a View this user's gallery iTrader: / %	mine passenger side does that too, although it goes away really quick after startup. I noticed a huge difference after the swap, it's worth all the effort. ------------------ Jason Brown 94'-1928