1.60 60' is considered "mild"???
Trent what type of lock-tite are you using to seal the cups, and are you using new cups and o-rings each time? How long are you letting them sit, etc?
IMO your only option from now on is LLY+ heads or threaded/welded cups. Provided the cups were installed/seated 100% correctly, it seems the billet hold-downs arent clamping them tight enough.
Nice runs though, cant wait to see what she'll do when you crank it up. :thumb:
Any video?
i strongly dissagree with that statment, as i have stated about my miles and use this year, i also have 112 passes, 34 dyno pulls and all the street racing i do, and not one cup issue yet, not trying to get in a battle here with anyone, but i run just as much boost and power as the next guy and i have been solid for years in the cup area? Those are good questions tho, what type of lock tite, and time sat is very important, as well as do you put the injector in the cup and lock it down all together or wait till the lock tite seats then put the injector in later, they all need to go in at the same time with the 70 foot pounds holding down to set the seal?