Copying Port design for CNC porting

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805moparkid

805moparkid

Slant and AFX Guy
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i was wondering if anybody has heard of taking a cyl head with a really good porting job, and making a CNC program for that porting so it can be replicated??
 
dont have any experience with that but i would gues it could be done the same way as exhaust companys does it, you use a mockup set of pipes that you measure with the help of a sensor on a measuring table that puts all the cordinats into the computer that then runs a cnc bending machine,but it may take alot more time to measure out a complete set of cylinderheadports since it would require alot more spots to measure before having the cnc mill do its work. also it may be a problem with inconsisten castings since not all heads are the same and will tolerate as much metal being taken out in some spots
 
Ya mean like the templates they had and have for the newer W2 and later HiPo heads?

Sure, I heard a that
 
I'm pretty sure the process for making a CNC program is to digitize a known port job and then program the CNC to copy that.
 
The only problem is you need a 5 axis machine to do the work , very freakin expensive . Then there is the tooling to hold the head . You would have to have alot of headwork to jutisfy .....
 
It should be fairly simple to sweep the port(s) with a CMM and produce a wiremesh/point cloud/dxf/other useful model format. Probe selection could be a bit interesting for some spots, but if a cutting tool can reach it, so can a probe.
 
Or you could buy this attachment for your 3 axis machine .

[ame="http://www.youtube.com/watch?v=wwTQ00G4Wlg"]YouTube - LS1 CNC HEAD PORTING[/ame]
 
lots of good info! i dont have any of the above tooling, just was wondering if i can take it to somebody...
 
805moparkid said:
lots of good info! i dont have any of the above tooling, just was wondering if i can take it to somebody...
Click to expand...

I know there must be shops out there that can do that work, but as was mentioned, it would be expensive, on a small run basis. At the PRI show in Orlando Fl, they demonstrate machinary that can digitize almost any piece that is installed on the machine, and multiple axis machine centers, that do the cutting. A couple of years, ago, they had a machine that was actually making a billit aluminum engine block from a solid piece of aluminum. Really something to watch.
 
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