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Computer-Aided Design (CAD) for Piston Development

12:14
38:08
105.1K views

At 12:14 in

NASCAR Engine Pistons & Rods Evolution: Lake Speed's Vintage Ford C3 Gets Modern Technology!

What happens here

The video transitions to the Computer-Aided Design (CAD) office, showcasing the sophisticated software used to design pistons. The engineer demonstrates how older piston designs (like the 2002 version) are loaded into the system, and new designs are digitally created and refined. This involves detailed manipulation of every dimension, including ring grooves, valve pockets, and various relief cuts. The process utilizes a vast database of previous designs and incorporates automation to quickly generate and test new iterations. This digital approach allows for precise control over tolerances and ensures optimal performance before physical manufacturing.

Goal: Understand how digital design tools facilitate precision and innovation in piston manufacturing.

Tools and materials

  • Computer with CAD Software

What they say

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future you will thank you is the the underground area here is that the weakest area uh or am I wrong on that you know I don't know if I would say it's the weakest it really just depends on what the cross sections are and how thick you can get away with less and something like that that's got more support but you know the mentality of it obviously you're not going to make gobs of power more than than you anticipated back then you know we're just hoping to get a little more with the Rings and a little more with the piston and a little more here and a little more there uh if it was making tons more power then it would be a different approach got it but for for just Simplicity the thickness under the underground basically based on the application yeah and it also depends you know on how that lays out with the forging you can see this one area is mold and the rest aren't trying to balance the part do some of the processes all in one on one go and not changing tools and and then you gotta follow the Contour of the pockets and all that stuff on the bottom where you didn't necessarily have the pocket on this one on the exhaust all right so one thing I've already seen that you did because we were back to the same rod link so we know the compression eye is the same but that top ring Groove height you've moved the top ring up why did you do that well because you're the area between the valve pocket and the ring Groove is that's one of the points that tells you where to put it okay if your reduced radial thickness is being used on your new piston then you can yield a similar thickness and move it up right and we already know that you know obviously this thing's gone a good long while it didn't hurt anything we have a pretty good idea of what we can get away with in that area and so that we were able to move it up because there's a little bit of horsepower there right by moving that ring Groove up sure you don't want to puddle any more fuel or have anything being left around the top or anything that doesn't need to be there so and also see that it's actually radius right there at the edge yeah where the old ones they didn't do that it may have had a radius on there or it might have been tighter somebody might have trimmed the top of this thing a little bit okay I really don't know um some sometimes that was calling back in the day they'd take tooth out the top or five off the top or whatever the radii on the on the edge of the Piston is a little bit bigger than it than…

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