This may help you guys decide on what caused this, or it may just be a waste of time. But anyway, I just pulled my head last night. I have been running smarty TNT-R, Dr Perf pressure box, Flux 4.5s and a big single. This truck has had horrible rattle since day one. The pistons are cut a little and a stock mls(the thicher one) gasket. Injectors have stock washers. I have made A LOT of hard runs in the truck at 4300RPMS. When I pulled the head, the spray pattern on the piston was perfect. But one thing I always do is be careful with fuel pressure and timing and spend a lot of time tuning. And I DO believe you need a egt gauge to do so correctly. EGTS on this truck have never been over 1400 degrees. Point being, I am not entirely sure the rattle is means the spray is off. This thing rattled as bad as any I've ever heard.
And our other truck(Mikeys Black Mega), has been ran to the extreme for over three years. The only thing aftermarket on the truck is injectors, Smarty, MP8, a sb66 and NX. This truck has been towing 20k lbs daily, raced on weekends with 6lbs of nx per pass for over three years. EGTS have been over 2000 degrees NUMEROUS times. We were kinda trying to find the limit of this engine. It still to this day has never had the head off of it. Runs perfect. But, we always was careful with timing and rail pressure.
So in my opinion, the failure of swoles engine lies in the pressure(obviously 100% on the mp8 plus smarty pressure is WAYYYYYYYYYYYYYYYYYYY too much) and the timing.
I may blow 5 trucks up tomorrow, but we havent had a single failure yet(knock on a huge monster piece of wood, lol) and I think it just comes down to careful tuning. And the only failures I have had come into the shop were from an injector hanging. I think other than Don Ms post(which I am 100% for water injection) the best post on this thread was from Beans Diesel.
