so I have a single cam zc currently getting mini-me head swap applied, I already know the steps I wana take with building the head but my focus now moves to the bottom end, I was thinking of boring out to 1.7 or 1.8 on an all motor build what pistons would work best if this were to be done would ctr or gsr pistons fit or would I have to go custom, AMF what would be the reliabilty of the bore and engine life.

 

PM7 or P29 out of the DOHC ZC or 1st gen Integra. I would not try and put B series pistons in a d series.

 

You will never fit a B series piston in a D series.

The bores are just too different.

PM7 pistons are on the top of the list for CR. Stockers (PM6) for turbo. What is your purpose with the engine, NA or Turbo? Both require different pistons so watch out.

 

75mm bore on d-series
81mm bore on b-series

pretty big difference just in bore....

just buy pistons that are made for your motor, or use the ZC pistons

 

pm7 pistons would be the best way to go. std 75mm bore with alittle honing youll be set. By the way I have a set still in box never used with new rings and wrist pins 4 sale.

 

ive heard pm7 pistons will lower compression if thats so thats not what i want

 

that is incorrect they will bump compression ratio.