I find it odd that the Hellcats, Demons and 6.4’s don’t come from the factory with a keyed crank and balancer pulley. Ive ordered a kit to do this...should keep me busy some weekend. Is it necessary, maybe not, but good insurance. https://highhorseperformance.com/hh...-hellcat-challenger-charger-srt8-hhp62pinkit/
Decision not to pin must have been made based on inaccurate engineering science information. The 5.7 isn't keyed either (mine is, only because of the Magnuson installation requiring it). According to Steve White, doing a key kit install will invalidate the warranty. Seems the wreak havoc point is 6300 rpm. What a mess.
In my opinion, putting the pin in alone can't invalidate the warranty unless you’re pinning it because you’ve added after market horsepower (i.e., swapping pulleys). I’m not interested in more HP, just making it better!
SW warning can be found in this thread. Do you have any warranty left? https://www.challengertalk.com/threads/hellcat-still-needing-pinned.674763/
I did the crank pin with no issue. I used a carbide drill to do it. The bit that comes with it really didn’t cut well. Speedy’s video covers the steps very well. I used a new Mopar crank bolt that matched stock and torqued to spec.
