Im building a high compression b16 engine using ek9 rods and pistons. However when i have come to take the standard b16a2 rods and pistons out there is a difference in lenght on the rods. The ek9 rods are ever so slightly longer. Has any tried a build like this before and can the ek9 rods be used or do i need to use the ek9 pistons on standard b16a2 rods

thanks

 

B16a
rod = 134mm
deck = 203.25mm

B16b
rod = 142.3 mm
deck = 212.39

The b16b rotating assembly is designed for the higher deck height used in that block (same as b18s). You could use an LS block (they are cheap) with that rotating assembly. You would essentially just have a b16b at that point.

In a b16a block, you are going to be past the deck, I believe.

 

^yup.
can't use b16b internals in a b16a block. only part that can be used is probably the pistons, but that shoots the compression up to 11.8:1 i believe.
the highest compression oem pistons i would use in a b16a are the jdm b16 pistons(p30).