Originally Posted by brenx
You may get a flex issue in the unbrako due to the spring pressure required for an F246. Guideplates will help but for how long I don't know.
my ford r/rs dont require guideplates and the engine has ran for years with adj p,rods i was just concerned the solid cam may change things?
if they are so crap why do they still sell them?
maybe some of you are running overly strong spring rates?
i had a straight six motor a while back with over the top springs and the tops of valves were beaten over like the head of a well used chisel!
what rate does the f246 require? there nothing to gain from springs stronger than they need to be