Im planning to build motor.
is going to be all motor.
i want to go at least 85.00 mm on either one.
i have a choice.
get the b18b and sleeve it to 85mm or get the b20 and bore it to 85mm.
but i heard the the b20 stock sleeve aren't that strong for all motor.
im planning to go arond 12.5 or 13.0 in compression ratio.

 

i currently have a gsr block.
you know a good place to sleeve the block???
if i use the ls crank on the gsr block what rods should i use.
gsr or ls

 

Use LS rods. GSR and LS have the same deck height. If you use GSR rods on an LS crank, they will be too long; so stick to the LS rods.