Any know what the compression should be on 1200 motor? I have one in my car that I have run for about 3 seasons now, I ain't touched it apart from a new clutch and oil changes, on a compression test it reads 155 on each cylinder, is this a good reading or should it be higher? The tracks we run on are probably what you in the US would call bullrings I think, pretty flat turns, is a 1250 engine any better?