s30.hybrid

iTrader: (3)

Over tightened bolts maybe..? It sucks but it looks like damage was limited to the rockers which is a best case scenario for that noise

stockA4

Two much valvespring pressure I think or improperly shimmed springs, bolts as others have mentioned, most likely.

I tried to use after market springs and a higher lift cam in an old sbc when I was a kid before I knew anything and I had half the pushrods punching through the stamped steel rocker arms lol. It seems like if more than one is broke it must be related to the springs but I still don't know anything and can't afford a complete valvetrain kit so I leave the parts matching to the experts.

This is why I always say ls6 springs and lower lift is fine for 99% of apps that really live on the street. Big boost maybe different, but I would try the stock stuff first anyways

s30.hybrid

iTrader: (3)

If the rocker had broke on either tip end I would agree with spring pressures possibly being at fault. But I don’t think the trunnions and end bolts see the same spring related stress ( I could be wrong though). Seems like the bolts and trunnions were either over stressed (from over tightening) or had manufacturing defects. Either way I think it’s worth a phone call to Jesel. The bolts don’t look all this big, what’s the torque spec on them and did you use a good torque wrench?

j-mart32

iTrader: (4)

Engine was put together top to bottom at an engine shop and supposedly torqued to spec

i was going to pull the head, but may just drill out the broken bolts and put new rockers on. What’s everyone’s thoughts?

j-mart32

iTrader: (4)

Also with this push rod being buried so low, collapsed lifter? That specific pushrod being low had me questioning if I should pull the whole head. Or is that normal?

stockA4

Can you pull the pushrod out? It looks like its damaged to me but I mostly mess with stock stuff. If you haven't contacted the shop that built it I would right away before going anywhere further taking it apart because it looks like they sold you a **** experiment for your intended application based on what you have shown us

j-mart32

iTrader: (4)

Thinking the lifter is collapsed. Hopefully not a smashed cam lobe

and yea I gave it a little tap with a hammer / screw driver and it freed up and came right out

wannafbody

iTrader: (2)

Looks like you got shafted

Che70velle

iTrader: (6)

I have to ask why adjustable rockers with a hydraulic camshaft?
Regardless, my first phone call would be to Jesel. I’ve seen their stuff break before...anything can break...and they bent over backwards to send out new stuff to get it going. If this stuff is new? you should have no problems with Jesel getting you new parts. If it’s used, well then, that’s a different story. I don’t and won’t buy anything used valvetrain related.

j-mart32

iTrader: (4)

They said possibly over / under tightened. Said they would give me a “break” on 4 new ones. About 45 bucks off

and yep, everything was bought and installed brand new

s30.hybrid

iTrader: (3)

Try to find the torque spec from Jesel for those bolts. If you have an old school beam type torque wrench you can get a pretty good idea of how much torque it takes to start loosening some of the other bolts on the rail. This will tell you if they were all torqued too high or if the installer just fudged a couple of bolts when torqueing. Maybe your builder will cover the costs if you can prove they were over torqued. For the bolts and trunnion to fail like they did they would have to be grossly over tightened.

j-mart32

iTrader: (4)

Unfortunately the car sat in wiring jail for quite a while. I doubt the builder will believe it only had 100 miles and dyno time on it. But worth a try I guess. I’ll maybe get a cheap harbor freight digital torque wrench and try and pop some off to see the torque put on em

CattleAc

iTrader: (7)

Too much torque applied from those freakishly long fingers...???

Ls7colorado

iTrader: (3)

wow didnt even notice that... the thumb and pinky look normal... but the other 3????

Also for that pushrod to be that far down im almost certain that it is bent, youve had some contact go on somewhere......

j-mart32

iTrader: (4)

Lol my thumb and pinky are pointed up so they don’t look as long as the other 3 haha

and I got the pushrod out and it didn’t appear bent at all. Rolled it on a flat surface and appears fine. Collapsed lifter?

vettenuts

iTrader: (4)

Did you check full open clearance to coil bind? I wouldn't point fingers at Jesel just yet, you need to verify how that valve train was built.

j-mart32

iTrader: (4)

Ill admit that I did not check. Figured it was fine coming from engine shop who supposedly had done all that.

It didn’t make any valve noise prior and was relatively quiet for an ls

Ls7colorado

iTrader: (3)

I don’t think the lifter can collapse that far! Was the pushrod still in the end of the lifter? Maybe it had jumped off and out of the lifter tray? If you slide the pushrod back in there how far down does it go??

j-mart32

iTrader: (4)

Headed home now to check in will report back. I will say when it was that low I couldn’t pull it out by hand. Turning the engine over by hand wouldn’t lift it, and bumping the engine over with the key wouldn’t lift it either.

Lifter fucked in the bore? Or cam lobe?

Drained the oil and nothing jumped out at me

j-mart32

iTrader: (4)

Just put the pushrod in and it settled in to a normal height. WTF