CNC throttle body porting
03-21-2007, 04:51 PM
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CNC throttle body porting Does anyone offer CNC throttle body porting for an C6 LS2? I have seen a couple of shops that hand port, however I an not sure how they can control circularity or concentricity. It would seem that CNC porting is the best way to go if you were to consider this mod.
03-21-2007, 05:18 PM
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It's hard to get a nice smooth surface with a CNC machine which is key when porting throttle bodies. I'm thinking a lathe would work better assuming you can symmetrically port around the center w/o porting through the wall. You would also have to make a jig to hold the TB in the lathe.
03-21-2007, 06:33 PM
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Originally Posted by Ferocity02
It's hard to get a nice smooth surface with a CNC machine which is key when porting throttle bodies. I'm thinking a lathe would work better assuming you can symmetrically port around the center w/o porting through the wall. You would also have to make a jig to hold the TB in the lathe.
You can get a mirror finish if desired off of a cnc mill. Machine quality cutter selection and tool path all play a role.
When I get some time I am going to play around with a few throttle bodies at work.
03-21-2007, 08:12 PM
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I heard the butterfly opening was spherical, so I was under the impression it required a CNC profile. Is this true? If not, a shopw who uses a manual lathe would be fine.
