About 5 mins into the 3rd drive of my car with the new engine, I started to hear what sounded like (with my unexperienced ears) an exhaust leak. It didn't surprise me much, since my headers-to-midpipe didn't line up perfect, and my catback is kinda ghetto (previous owner welded in not straight). A few minutes later I started to hear a loud metal clanking/popping that started out quiet and about 1 clank per 2-3 secs and gradually increased in sound level and time between lessened. I got it pulled over within a minute and never ran the engine over about 2000 rpm when this was happening.
Ends up the stud mounted Scorpion 1.6 #2 exhaust rocker had came loose and was hitting the VC top. The rocker was twisted on the stud but the tip was still 1/2 over the valve stem. The pushrod was still in the cup. The lock was way loose, and the nut was 1 turn from coming off. When I took it off, the rocker, valve, valve retainer, and stud showed no signs of damage or even signs of the rocker tip running off the edge of the valve stem. The pushrod cup and pushrod end showed no signs of the pushrod having came out and danced around on the rocker.
Looking down the pushrod hole of the head, you can see that the Trick Flow 6.300 pushrod is not over the FMS roller hyd. lifter at all and is off the side of the lifter. It is also wedged in there, I can't pull it out with my fingers. I tried rocking the motor back and forth about 15° each way to see if it would loosen. Nope. I know I just have to loosen the stock AFR 165 guideplate to get it out (hopefully).
My questions are:
1.) What did I damage?
2.) Should I replace the lifter and can you just get 1 or 2?
3.) Should I pull the lower intake?
4.) Does Summit sell individual Trick Flow 6.300 pushrods?
5.) Should I run different lifters?
Thanks,
Rick
Ends up the stud mounted Scorpion 1.6 #2 exhaust rocker had came loose and was hitting the VC top. The rocker was twisted on the stud but the tip was still 1/2 over the valve stem. The pushrod was still in the cup. The lock was way loose, and the nut was 1 turn from coming off. When I took it off, the rocker, valve, valve retainer, and stud showed no signs of damage or even signs of the rocker tip running off the edge of the valve stem. The pushrod cup and pushrod end showed no signs of the pushrod having came out and danced around on the rocker.
Looking down the pushrod hole of the head, you can see that the Trick Flow 6.300 pushrod is not over the FMS roller hyd. lifter at all and is off the side of the lifter. It is also wedged in there, I can't pull it out with my fingers. I tried rocking the motor back and forth about 15° each way to see if it would loosen. Nope. I know I just have to loosen the stock AFR 165 guideplate to get it out (hopefully).
My questions are:
1.) What did I damage?
2.) Should I replace the lifter and can you just get 1 or 2?
3.) Should I pull the lower intake?
4.) Does Summit sell individual Trick Flow 6.300 pushrods?
5.) Should I run different lifters?
Thanks,
Rick
. I broke a rocker stud and one of my scorpions got bounced around inside the VC for about a minute before I could get the car off the road. And a couple of my rockers have clearanced themsevles for me against the VC's (nice of them to save me the effort 
).
I will be sure to do rocker adjustments in the future when I can think clearly.
