I have a b20/gsr in my car now. My buddy told me that the gsr block was better for turbo. i would build both the motors either way. My b20 is 84.5mm bore but i heard i could resleeve that and have it strong enuf to handle mad boost. so what i am asking is stick with b20 or sell it and go gsr? the b20 has rods all i would need is to resleeve and low comp pistons. will the 2.0+ liter help alot making power?

 

sleeve b20, its got longer stroke. nothing better about the gsr block.

 

in sleeved form either would be fine......the b20 does have more displacement....and since you already have it and rods, just go ahead and sleeve the b20

 

how will the larger displacement help, turbo will it allow more air to be rammed in? do you know how much more hp it would make with 84.5mm over 81mm