So my tuner drained my oil, and cut the filter on a whim, and it was full of metal sand material. I wasn't sure what to think, so I just kept running it after the oil change (very low mileage) - Well, I checked my oil today before taking it for a ride, and there was metal in it, so I'm like what the **** is going on? I thought my 408 build (from September of 2012, with between 3,500-5,000 miles on it - I don't exactly remember) was falling apart inside. A friend of mine told me to pull rocker arms off and take a look, so I did.

I am using the Comp Cams trunion upgrade that was supposed to be the best thing since sliced bread.





























All but 2 of them are spewing metal out of the sides. ******* pathetic. I know they're cheaper than the roller rockers or any other style of upgraded rocker, but this is ridiculous.

I'm using a texas speed texas giant (Also comp ground), with COMP 7.425 in pushrods.

And I just bought the yella terra yt6638 non ultralites to replace them.

 

Not the first time it has happened. The CHE Bronze bushing for stock rockers is probably the single best upgrade, but it costs as much as Yella Terras...

 

I'm thinking about getting CHE bushings too. These Comp trunnions are making me nervous.

 

I have the Lunatis. They're probably all from the same Chinese garbage facility.

 

The che bushings probably take a fair bit of labour and tool time to fit.

 

Did you press out any of the bearings to check them? Also, is that grease/lube of some type on the bolts? Does the metal stick to a magnet?

 

Good point about it being magnetic. Looks a lot like anti-sieze grease.

 

A bunch of pics... all of them still assembled. How about showing us the internals.
Was the valve train checked for clearance, proper p rod length, etc??

 

It looks like thread seal on the bolt which makes sense no reason to use anti-seize.

 

Damn, I changed all the bearings in my rockers last night!

 

That sucks. I'd expect better from Comp Cams.

Why would you use these over a stock rocker set up? I see no advantage over the stock rockers with these. Maybe a full roller, but fulcrum rollers are stock right? Are these 1.8:1, if so that would make sense.

 

Just a better cage for the pins in the bearing. Don't jump to conclusions guys. Oil gets pumped up through the hole in the rocker. The metal could be from anywhere in the motor.

 

I've never seen a trunion upgrade do THAT. That's... Idk what that is.

You couldn't GIVE me roller rockers to run. Too heavy. I ran upgraded trunions on my last build, and I'll run them on my new one coming up.

OP take some apart and inspect them.

Better yet, don't even disassemble them and send them to comp and see what they have to say about it.

Is it magnetic? And how's the oil pressure?

 

yeah i use thread sealant on the exhaust rocker bolts on account of me being exceedingly paranoid.

I'm going to tear these things apart soon, need to go to my dad's and get his snap ring pliers.

Comp seems to be receptive to helping me out thus far.

 

haven't checked it for magnetic properties yet, I just tore them all out and was furious.

Oil pressure has been ideal. Exactly where I anticipated it to be, honestly.

 

That's good news then.

Yeah, comp usually is pretty "on the ball" if there's ever an issue. I hope yours is just... Weird, and no explanation, and everything is ok in the end

 

Well, I popped one apart (not the right way, I pried the snap ring apart with a flat head and pushed a stud into the top, and used channel locks on the other side). The bearings inside the cages look ok, but then I shook them out into my hand, and after they rolled around, my hand was covered in the exact same metallic material that was all over my hand to begin with.

Another member on here, named 07CTS-V, has had the exact same issue on a set of these.

 

Yea it's pretty likely that that much metal was able to make it's way through the filter, through the oil galleys, then the push rods, then conveniently just land around all the same area.

Also, the metal is magnetic. So are the needle bearings.

 

There is no way that metal came up through the pushrods. There is possibly no greater point of friction in the engine than the rocker arms. With modern ramp designs opening and slamming the valve closed at incredible rates the amount of abuse they can take is amazing. I think Radeon is just beyond what upgraded stock parts can handle. Oil filter should have caught 99.9% of it. The pump would be the main casualty. I would guess it hasn't been ran very long and that he has carefully monitored his new engine. Put some new rockers in it and roll.

 

Just saying it could very possibly be from somewhere else. It could have a faulty filter, pump, etc. That was not enough diagnosis for a good conclusion. Yes the metal could have came from somewhere else, got pumped up the push rods and stuck to the magnetic bearings and became magnetic. It could very well be the rockers. Good luck.