Was getting the car tuned and everything was “going well”. Tuner was going around the block cleaning up the cruising AFR and this noise came in. He shut it down and rolled into driveway.

Can’t pull the valve covers till Later tonight after work

 

Intrigued..

 

Left rear taillight is out

 

 

Video posted. Sorry on delay, new to vids and doing this via phone

 

Sounds like a valve event... something top end. Maybe a broken spring or rocker arm.

 

Im going rocker arm came loose.

 

Agreed. Sounds like it’s half the speed of the engine so hopefully it’s top end.

 

I’m hoping top end and something stupid. The noise is a hollow sound and rhythm is weird for sure. It had been making good pulls with no issues and then did this at 17% throttle 🤦🏻dum♂️

 

I should include that it’s a decent top end. Jesel rockers, pac 1208x springs, motel 5850 lifters. Hoping rocker is loose like someone mentioned

 

Another question for when I get home to check it out some. If the top end looks ok, I’m gunna disconnect the coils/ injectors and turn it over. How much oil pressure should I see when cranking the engine over?

 

With the spark plugs out I usually see 35-50 on used engines.

 

How about with plugs in, coils disconnected ?

headed home now to start checking stuff. Starting at flex plate/ bolts

 

 

This is why stock rockers >

 

We don't need no mountain lift and rawkers....stock FTW.

 

 

Thats pretty crazy. I wonder how that could have happened.

 

You and me both. Trashed three of them. Shaft was snapped and so was the top of the bolts so they are still in there.

Hoping the damage is limited to here though, and the cam is OK

 

Maybe Jesel had a bad day when those were made...