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Precision Shaping and Quality Control

8:59
23:43
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At 8:59 in

How Racing Engine Parts Are Made! CP Carrillo Factory Tour & Behind The Scenes (Rods & Pistons)

What happens here

Every piston produced is meticulously designed to be oval and to possess a 'barrel shape' (smaller under the oil ring and larger at the bottom). This precise shaping accounts for thermal expansion during engine operation, ensuring optimal fit and function when the piston reaches operating temperature within the cylinder bore. These complex geometries are critical for durability and performance, allowing the piston to expand into a perfectly round shape at high temperatures and pressures. Extensive measurement and quality checks are conducted at every stage to ensure these exact specifications are met.

Goal: Achieve precise oval and barrel shapes for pistons, ensuring optimal thermal expansion and fit.

Tools and materials

  • CMM — Verifying the accuracy of hone gauges and ensuring precise dimensional quality
  • Hone Gauge N/A — Measuring the precise dimensions of honed parts
  • Starrett Surface Plates Starrett — Providing a stable and flat reference surface for precise measurements
  • Finished Pistons N/A — Pistons ready for final dimensional checks and quality assurance

What they say

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that it is down here because it grows more in this area than it does down here and then if you look at the bottom of the piston this has the majority of the materials so it's going to grow more in this area than it is here so it's actually an oval in this direction and it's smaller here than it is here and that's that's just the general statement you can make about all pistols wow what are y'all getting into the juicy details right so you have it all factored into essentially when it expands B round is it an iron block is it an aluminum block is it Force induction is it naturally aspirated is it a cold cooling system is it desert is it an offshore boat what are what are we doing and that's going to dictate everything that we need to know about the dimensional changes that we make to the park do you change the profile between 26 18 and 40 32. uh yeah we we and we do it with four Gene structural changes we change it with 40 32 a lot of the 40 32 Pistons that we manufactured today are generally used for either Street applications or vintage applications right so uh without with that being said there there's there's a lot of other differences besides just the material a lot of the parts are longer uh the forging selections are different and stuff like that too so uh but yeah there's generally you know your growth rate's going to be a little different you run things tighter something I'm noticing is that there's one of these start slabs at every single station here yeah the detail is impressive yeah I mean we could still use a little organization if you ask me but that's okay you know we're working on that we're about ready to reorganize the whole shop move things around and get real clean um but in general yes we use that for everything because it's necessary to have a good flat surface to measure on otherwise what are you measuring too if you're enjoying this video hit that subscribe button because there's all kinds of stuff on our channel that you would be just as into as this maybe even more if you click the little bell it will tell you when we post something at least it should I don't know give it a shot anyway back to the video we pride ourselves in having good equipment and good people and good measuring devices does everything get measured before it moves to the next station oh yeah and uh lost times in sequence and serialized as well the traceability efforts are becoming better and better on racing over time and the traceability efforts on the OEM side…

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