which piston wrist pin i should use
 

Hello,
Currently I swap YCP 81.5mm piston on B18C , the YCP piston package come with a new set piston pins , do I use the new one set or still using the old one should be better?
Otherwise, is it the heating method is the best for the pins installation?
anyone give me some recommendation??

Thanks.

Re: which piston wrist pin i should use
 

USE THE WRIST PINS THAT CAME WITH THE PISTONS. That's a rhetorical question to ask.

Re: which piston wrist pin i should use
 

I would recommend taking the rods and pistons to a local (competent) engine machine shop and having them press in the NEW wrist pins.