Originally Posted by
Turbo Zetec
Mahle Pressure cast pistons would be 84P (like the Focus RS), whereas the st170 pistons are 84L, making them normal cast
I stand corrected! lol Interesting then that they will take 350bhp.
Originally Posted by
studabear
So what do you think is a safe limit for st170 pistons?
Originally Posted by
Turbo Zetec
apparently over 300bhp, but until someone pushes them over their limit, we won't know
Simon at Sitech pushed them over their limit, 355bhp.