new cam, broken valve spring

[sliverado rst]

last weekend i finaly put in my new cam, comp 224/224 581. lift, comp valve springs and push rods and a nelson tune, everything went to get great i drove it for 3 days then i got a harable noise, i took off the valve cover to find a broken spring, a broken rocker ( needle bearings everywhere ) and probly a bent valve sence its still in the head. any ideas what would cause the rocker to come apart and the spring to break at the same time? i was told the pushrods where the correct length but they seemed lighty larger then the stock ones.

[Defunct SO]

needle bearings coming out the rockers is not uncommon. Many times some of the bearings come out and you dont even notice until you change the oil and you have them on your plug. It may have been the spring first. I would put a spring, push rod, and rocker on and go from there.

[RedHeartbeat]

I've heard of a few Comp springs failing. It happens from time to time to even the most expensive of spring sets. Stock rocker arm needle bearings fail all of the time. The arms are less than $10 each per assembly, you're not going to get the best quality roller rockers for that price per unit. Hopefully your valve isn't bent because it didn't fully retract to the seat when the piston came up after the valve spring failed.

[bgray]

were you baggin on it before engine temps were up? stock springs?

[txarkitekt]

<div class='quotetop'>QUOTE(bgray &#064; Jun 4 2007, 07&#58;22 AM) [snapback]95585[/snapback]</div>

were you baggin on it before engine temps were up? stock springs? [/b]

I am with bgray. You really shouldn&#39;t rap up the motor above 2500-2750 rpms until after the motor temp has leveled out. Those high performance springs are quite stiffer than stock and therefore are more brittle at colder temps. I recommend to ANYONE who has new springs, pushrods, rockers, etc.: DO NOT push your motor hard until it has had a proper warm up&#33;

[sliverado rst]

the cam valve springs and pushrods were all brand new, i just getting on the highway when it happened, i have a 2800 stall but going easy so i didnt push above 3grand the hole time, i was just leaving work, the truck was warmed up when i left, the pushrods were 7.4s i woulda thought they were alilttle too long but i was told they were correct, i was thinking about upgrading to some harlem sharp or crane rockers, im just hopeing the head isnt crack or a whole in the piston

[gold87]

a friend of ours ss that we worked on has roken 2 pairs of springs already and according to comp cams their is nothing wrong wit the springs but texas speed said they have gotten allot of broken srings and were changing them

[txarkitekt]

<div class='quotetop'>QUOTE(gold87 &#064; Jun 5 2007, 12&#58;02 AM) [snapback]95701[/snapback]</div>

a friend of ours ss that we worked on has roken 2 pairs of springs already and according to comp cams their is nothing wrong wit the springs but texas speed said they have gotten allot of broken srings and were changing them [/b]

Thats crappy...I ordered my cam, pushrods, and springs from TS....I guess I will have to keep my ears open so I don&#39;t crack a piston...



BTW, how loud is the knocking? My valvetrain clatter is louder than stock...but is it a definite CLICKITY-CLACK from the normal???

[swampthang5.3]

I have a 03&#39; 5.3 and had HPE install there C-cam comp springs and rods, 3 days later i heard it start knocking loud i took it back and they said the spring broke they pulled it apart and the piston was cracked

[swampthang5.3]

you definately know somethings wrong, it started sounding like something cought in the e-fans and got really loud from there. took about 5 seconds for it all to happen.