So before I start moaning to the company who sold me the nrp rings that they don't meet the Nissan spec, can someone confirm if this is a std piston and not an over size one:
2 is the grade, 54C engine type but what is the 05? I'm hoping not 0.5mm oversize, might explain the ring gap if it is
I measured my bored today again and they came out at 86.05 to 86.06 outside of the range in manual but within the limit.
I've not got a decent mic big enough to measure the Pistons.