Everyone who would suggest install error is lacking experience and is basing opinion off of a random thought. If you were to incorrectly install a lock, there would be zero chance of it lasting 50-75 miles, even if it did the valvespring would pop off and be laying in the head good as new.

Install error?? I would love for someone to specifically describe how the valvespring could break and exactly how you would install the valvespring incorrectly in a way that could last 50-75 miles and a few WOT pulls then cause the spring to break.

Please be specific in your reply..id love to hear this.

 

x2, there is a chance of a lock/s not being seated fully, or spring being compressed crooked or too much causing a stress or a fracture.. not all install errors happen or show up right away. how many miles did he get on the spring?

 

About 75 miles or so..

 

Damn man i hate to hear your luck....

 

You do know how fast valve springs move right? If a lock wasn't full seated, it would pop out faster than ****. and a spring seated crooked would fix itself within a few revolutions, and if not then, certainly when he went WOT a few times.

I'm sticking with the bad batch excuse

 

Compressed crooked causing a stress <---- you would have to compress it to coil bind then keep on cranking on it way past the point of it bottoming out and even then I dont think your tool could ever reach the point of damaging it, the tool would break before the spring. The springs are made of some pretty serious metal that can handle smashing. That never happened. Lock not seated would not last 75 miles AND could not possibly break the valvespring, you are talking about it popping off all at once and spring just sitting there. No possibly way of breaking it.

 

it was a bad spring, nuff said...

 

just stating my opinions, not saying anybody does bad work, **** happens and thats a fact. i made the statement because of the location of the break. take em off and send em to pac, get em tested. never herd of any others breaking(pac) but there is a first for everything, and if they do start breaking i will be the first to come back and say i was wrong..

 

Specifically, the spring could not be properly seated causing it to bind on one side and break, simple as that.

I agree that a lock wouldn't last long past cranking, but an incorrectly seated spring would not correct itself...I've seen it on an engine that was put together, driven on a road test with a few WOT runs (I know it's stupid on a new engine, but this guy was stupid), then had the valve covers removed for whatever reason (can't remember if he was getting a noise or misfire or what). Anyway, once the valve covers were off and the valvetrain inspected, one of the valvesprings was found to be crooked. IIRC, the valvespring had to be replaced as it had witness marks of coil bind.

I've been a master tech for over 14 years and I grew up working in my father's shop building engines...and yes, I've put valve springs in incorrectly even while assembling the heads on a bench, while I was learning. (Luckily my father always caught my mistakes while QC'ing my work...then I got reamed) Maybe you should re-examine your statement and let the group know what kind of experience you have that's useful to us before you go and post such statements.

I agree with this, I'm dying to know...I'm not saying that PAC couldn't have a bad batch of springs, it happens. But with a little detective work, considering the location of the spring, combined with PAC's great track record, one would conclude that there was more than likely an installation error...it happens to the best of us and doesn't make someone a bad mechanic.

 

Unless the spring is WAY crooked, I don't really see how it wouldn't correct itself. Valvesprings spin when the valves float, and at high RPMs it can happen. I would assume that the spinning action would correct the angle of the spring?