Quote Originally Posted by Henderlong View Post
haha over precise? I have to do both sides, 8 ports. all holes must lines up pretty dang close. If i plan to ever sell these- how would i douplicate my messurements and procedures if im not as acurate as possible? Plus the overall aperaence must look good, and i plan on showing my boss this when im done, and hopfuly working a better position.
That's all well and good, precision is a much overlooked facet of building... But if you're doing this for production heads (and some of the offshore aftermarket knockoff junk) you'll need your bolt holes to be much less then precise to allow for casting shift, poor quality control, and other boo-boo's that make it necessary to adjust the flange to align with the ports, sometimes to the point of having to cut the flange between ports, move the tube around to "find" the port, then reconnect!!!!! Precision is good, but adjustability has got to be a consideration, too!