Digitizing Cylinder Heads Help

[SSDiv6]

Originally Posted by Kevin Panzino

Not going to get involved with the side discussions regarding NHRA checking stocker heads with a device, nor the NHRA /IHRA discussion.

But I can tell you from being in industry, the level of detail that the modern laser scanners and/or a 5 axis CNC mounted digitizing probe, and the software that goes with it is at a level that blows your mind. As long as the laser/probe can get to everything, it will create a model of the shape that is within at most .001" and in most cases better than that.

What I always wondered about, is just how repeatable the castings are/core shift etc,

Certainly a major issue on the old factory castings, but just how good are the new approved aftermarket heads on core shift?

I have to think a scanned, max-effort head that someone spent a ton of time on, one port at a time, and checked along the way with a UT device and got to min wall at a few places wouldn't then break into water and create more than a few boat anchors when that program was run on a new head ??

Kp

Yes, the current equipment available in the market is very accurate.
We load CAD files of NAS standards fasteners and hardware into our Keyence IM-8000 equipment and upon the inspection of the fasteners, it provides us the actual dimensions of each fastener and will highlight and identify those that are non-compliant.

The handheld scanner will measure any part and in the case of a cylinder head, I do not see an issue scanning a port/runner and creating an actual dimensional model.

[GTX JOHN]

I believe the head casting on the old Mopar 60s/70/s
heads were used 10 times before being discarded.

We have in our experience over the last 60 years,
seen a huge discrepancy between our same casting
number small block heads in the port size.