In this episode of the Power Driven Diesel Podcast, we’re jumping into one of the most important and overlooked parts of diesel performance, building your engine the right way. Whether you’re putting together your very first motor in the garage or you’ve already built a few and want to step things up, this episode is packed with real-world advice on setting up a reliable bottom end.
We talk through everything that matters when it comes to getting your clearances right, including piston to wall, ring gap, bearing choices, and proper bore finish. We also share a lot of personal experience, including what we got wrong on our early builds, what we’ve learned since, and how it’s shaped the way we put engines together today. This is the kind of information you won’t always hear unless you’re working in the shop every day.]
If you’ve ever wondered whether your local machine shop is doing things right, what tools you actually need to measure piston clearance, or if that old three-stone hone is good enough, we break it all down. We talk about real horsepower goals and what kind of clearances actually hold up, whether you’re building a 600-horse daily driver or chasing four-digit power on the dyno.
We also cover the differences between cast and forged pistons, gapless versus conventional rings, and the truth about how much contamination in your bearings it really takes to ruin a fresh build. From micrometers and profilometers to plastic gauge and feeler gauges, this episode covers both budget-minded builds and pro-level machine work.
The goal is simple. We want to help you avoid costly mistakes and build something that lasts. We’ve been through the failures, cracked blocks, broken pistons, and trashed bearings so you don’t have to.
If you’re serious about performance diesel, especially Cummins engine builds, this episode is a great one to dig into. Drop your questions in the comments and let us know if you want a follow-up. There’s still a lot we didn’t cover like head studs, torque specs, and top-end setups, and we’re just getting started.
