i need help guys. i got b18b motor im thinking of rebuilding the block.. the problem is i remove the piston and mixed all the connecting rod caps. does it really matter where to put it since im replacing the rod bearing with ACL. and ive noticed that one of the CAP was upside down and i dont know where to put it?

 

any1guys i need help

 

Look at the numbered marking on the sides, the rod will have half of the number on it and the cap will have the other half. Try to match up the markings. If that doesn't work, have your machinist recondition the rods so your big bores are true and weight matched.

 

ive notice that but does it money if i switch around the piston

 

What?
Are you asking if it matters which rod and piston combo goes to which cylinder in the block? Yes it does matter, since the rotating assembly is balanced from the factory.