turbodriz said:I have heard alot of you guys talking about the head lifiting, the arp studs are'nt taking care of this problem. Our does this go back to the issue about the engine is designed? I also heard that as far as specs , that the motor needs to built more on the tight side.....Would anybody know where I can get some numbers from so that I can tell the machinest the way it needs to be. Please don't get me wrong he is good but it never hurts to check. I lost the paper that had my specs for my cams which sucks because I could never check the valves but its okay because he is getting the head back anyway. I know that it was in the 270ish dur.
Yeah, I would agree with that. I think the design of the head and block could have been a little better, and the low head bolt torque didn't help either. I posted this a while back, look at how much thicker the 1jz hg is around the cylinders because the water passages were moved between the cylinders: