I also posted this in my project thread but wanted to pose the question in here as well for those that don't go in the project gallery.

I took my block to the machine shop today for the two pistons that contacted the wall and he thinks he can get #1 & #2 smooth with a .005 overbore (4.035 final bore). Wiseco is the only manufacturer I have found with a 4.035 shelf piston. According to Wiseco the new pistons are the same as the ones I have with the exception of a new ring pack and coated skirts. Should I just buy two new 4.035 pistons and put the other 4.030 pistons back in or do a full 4.035 set? Would .005 larger on #1/#2 make that much difference in rotational force and cause vibrations?

 

shouldn't make any difference since they oppose each other, race outboard guys do it all the time.