hey guys
ive bought some ferrea valves stock intake and plus 1mm ex
the ex seats can just be machined up or do i need to replace seats?
also do i need heavier spring rate or will new oem get the job done
running hc s2 cam
hey guys
ive bought some ferrea valves stock intake and plus 1mm ex
the ex seats can just be machined up or do i need to replace seats?
also do i need heavier spring rate or will new oem get the job done
running hc s2 cam