Why Is Porting Still Done By Hand?
#1
Well, basically, I'm just wondering why people haven't started porting irons with CNC to get more accurite and consistent porting jobs done. Additionally, why take the risk of ruining an iron by a little slip-up of the bit popping out of the port or cutting too deep?
Just morbid curiosity!
Just morbid curiosity!
#10
[quote name='R.P.M.' date='May 16 2005, 12:55 AM']Oh come on lol!!
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What? I still agree with BDC. CNC porting for boinger heads is an economical way to get a good port job. But it still has to be smoothed by hand to remove the CNC marks(because its faster than having the CNC machine take out its maching marks). But all the top port jobs are still done by hand. The CNC ports excel in their repeatability, but they are only as good as the person programming them. Ever notice all the race heads for piston engines are hand ported? Even with the prominence of CNC ported heads?
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What? I still agree with BDC. CNC porting for boinger heads is an economical way to get a good port job. But it still has to be smoothed by hand to remove the CNC marks(because its faster than having the CNC machine take out its maching marks). But all the top port jobs are still done by hand. The CNC ports excel in their repeatability, but they are only as good as the person programming them. Ever notice all the race heads for piston engines are hand ported? Even with the prominence of CNC ported heads?