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Joe Irwin On Building The Fastest Coyote Engines And Why Most Machine Shops Fail

Joe Irwin On Building The Fastest Coyote Engines And Why Most Machine Shops Fail

Street Alpha Podcast Dec 28, 2025 114 min
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About this episode

Joe Irwin shares insights on building high-performance Coyote engines and the intricacies of machine work in the automotive industry. He discusses the evolution of engine technology, the importance of reliability, and the challenges faced by machine shops. Irwin emphasizes the need for precision in engine assembly and the significance of proper break-in procedures. He also touches on the future of racing with Brett's car, highlighting the potential of their new billet block. This episode is packed with technical knowledge and practical advice for enthusiasts and builders alike.

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Technical Too Afraid to Ask
Car

Toyota RAV4

"...e your holiday wishes come true with a new Camry, RAV4, Tacoma and more! Alright, let's sing it togethe..."

The Toyota RAV4 is a type of car called an SUV, which is bigger than a regular car and has more space inside. It's popular because it's reliable, can hold a lot of stuff, and is good on gas, making it a great choice for families or anyone who needs extra room.

Car

Toyota Tacoma

"... holiday wishes come true with a new Camry, RAV4, Tacoma and more! Alright, let's sing it together this t..."
Car

Toyota Camry

"...n! Make your holiday wishes come true with a new Camry, RAV4, Tacoma and more! Alright, let's sing it t..."
Company

Custom Engine Service

"...all the inboard big block Chevys, you know, got rebuilt at Custom Engine Service. Well, in the same instance..."

Custom Engine Service is a business that fixes and upgrades engines. They help make engines work better, especially for fast cars and boats.

Term

valve train

"All the valve train needs to be stable enough to be able to go through loading, unloading hours at a time at the engine speeds aren't nearly as much as what we do in the drag race stuff."

The valve train is the part of the engine that makes sure the valves open and close at the right times. It includes several smaller parts that work together to control the flow of air and fuel into the engine.

Term

RPM

"But, you know, say 6,000 RPMs, you know, 6,500 wide open for an hour and a half."

RPM means how many times the engine turns around in one minute. A higher number means the engine is working harder and can produce more power, but it can also wear out faster.

Term

oil cooler

"So you got to have a big oil cooler on them."

An oil cooler is a part that helps keep the engine oil from getting too hot. This is important because cooler oil works better and helps the engine run smoothly, especially when it's working hard.

Term

water flow

"You got to have water flow that flows through the engine."

Water flow in an engine is about how coolant moves through the engine to keep it from getting too hot. Good water flow helps the engine stay at a safe temperature while it runs.

Term

horsepower

"...what roughly was it? 1200 horsepower, you know, maybe 14 or 1500 horsepower at the most. So I want to talk about pretty much the evolution of how that has shifted..."

Horsepower is a way to measure how powerful an engine is. The higher the horsepower number, the faster and stronger the car can be.

Term

Coyote engine

"Right. There's the Coyote guys that, you know, started with stock blocks, you know, and stock short blocks and make a thousand, 1100."

The Coyote engine is a powerful V8 engine from Ford, often found in their Mustangs. It's popular for modifications and upgrades to increase its power.

Term

machine shop

"Right. But at some point, it needs to go to a machine shop and get done."

A machine shop is a place where parts are made or fixed using machines. For cars, they help rebuild engines and make custom changes to improve performance.

Term

LS engine

"Right. An LS block might need sleeves if it's an aluminum block, if it's a steel block, they're going to bore it and stroke it."

The LS engine is a popular V8 engine from General Motors, often used in many different cars. It's well-liked for its performance and the ease of modifying it for more power.

Term

bore and stroke

"if it's a steel block, they're going to bore it and stroke it. Put studs in it and need all this machine work."

Boring and stroking are ways to make an engine bigger. Boring makes the holes for the pistons wider, and stroking makes the pistons move further, both helping the engine produce more power.

Car

Toyota Supra

"...They want to build this Mustang or Supra or RA, you know, whatever it might be..."

The Toyota Supra is a fast sports car that many people like to customize. It's known for its speed and performance, making it very popular among car lovers.

Car

Audi R8

"...They want to build this Mustang or Supra or RA, you know, whatever it might be..."

The Audi R8 is a high-end sports car that looks great and goes really fast. It's known for its luxury features and powerful engine, appealing to those who love fast cars.

Car

Ford Mustang

"...They want to build this Mustang or Supra or RA, you know, whatever it might be..."

The Ford Mustang is a popular sports car that many people love to drive and modify. It's known for being powerful and stylish, making it a favorite among car fans.

Company

Pro Line

"You see the same thing with like, say pro line, right? Okay. Pro line is not going to build a small block full coyote, right? You know,"

Pro Line is a company that makes powerful engines for racing cars. They focus on certain types of engines that are popular among racers.

Term

Hemi

"if you want a Hemi, you know what I mean? To go in a pro mod, you know, where you got the money to, right?"

Hemi is a type of engine that has a special shape inside it, which helps it run better and produce more power. It's often found in cars made by Chrysler.

Term

Pro Mod

"if you want a Hemi, you know what I mean? To go in a pro mod, you know, where you got the money to, right?"

Pro Mod is a type of drag racing where cars are heavily modified to go really fast. They can use different kinds of engines to get the best performance.

Term

VQ 56

"...There's obviously the Nissan stuff that's out that VQ 56 deal. You know, that's some of those guys are running..."

The VQ 56 is a type of engine made by Nissan. It's a V8 engine, which means it has eight cylinders and is known for being powerful and dependable.

Term

VK 56

"...I think it's a VK 56. Yeah. VK 56. Yep. Exactly."

The VK 56 is another type of V8 engine made by Nissan. It's used in some of their bigger trucks and SUVs, providing strong power for those vehicles.

Term

volumetric efficiency

"...it's volumetric efficiency is really good. So the amount of air that it takes in, and the amount of fuel that it needs to be able to, you know, consume all that air and turn that into combustion is very efficient..."

Volumetric efficiency is how well an engine can take in air. If it takes in more air, it can perform better and use fuel more efficiently.

Term

head flow

"...do you think that that has a lot to do with like the head flow? Of course. Seems like it's a me from the interviews I've done and just learning. It seems like the, the best engines out or ever seems to have great head flow,..."

Head flow is how well an engine can breathe. If an engine can let air and fuel in and exhaust out easily, it can run better and faster.

Term

2J

"like a K series, like, you know, like an RB 26 has better head flow than a 2J."

The 2J is a type of engine made by Toyota, especially famous in the Supra. It's known for being very strong and can be modified to produce a lot of power.

Term

K series

"like a K series, like, you know, like an RB 26 has better head flow than a 2J."

The K series is a type of engine made by Honda. It's known for being powerful and efficient, and many car enthusiasts like to modify it for better performance.

Term

RB26

"like a K series, like, you know, like an RB 26 has better head flow than a 2J."

The RB26 is a powerful engine made by Nissan, often found in the Skyline GT-R. It's well-known for being able to produce a lot of power, making it a favorite among car enthusiasts.

Term

2G

"Yeah. We're not going to debate if it's better than a 2G or not, but it seems like head flow is like the biggest thing that kind of makes an engine more efficient and make more power."

The 2G is a version of the Mitsubishi Eclipse car. It's known for being fun to drive and can be made faster with modifications.

Term

Ford truck heads

"Truck heads. So it's the smallest port that Ford ever made. And we've been six eighties at 212 miles an hour, unported, you know, so take that, you know, I mean, like it's,"

Ford truck heads are the parts of Ford truck engines that help the engine breathe better. They are built tough for heavy use but can also be improved for racing.

Term

camshafts

"camshafts, they, they like camshafts in them, you know, um, but that's, you know, 1200 horsepower or less. There's no real need for camshafts, you know,"

Camshafts are parts of the engine that help open and close the valves. They are important for how well the engine performs, especially when running fast.

Term

cubic inches

"You know, our biggest downfall is our cubic inches. Um, you know, it's still only 300 cubic inches, you know, uh, we don't really put a lot of stroke to them,"

Cubic inches measure the size of an engine. A bigger engine usually has more power, but it can also change how the engine uses fuel and performs overall.

Term

torque curve

"you know, keep the torque kind of managed, you know, out of low RPM kind of get away through the torque curve a little bit and it'll live a long time. Um, after that you could do some rods and pistons..."

The torque curve shows how much twisting force an engine produces at different speeds. Keeping it balanced helps the engine last longer.

Concept

drag racing

"you know, is what we run it. That's if you're like drag racing. Oh yeah."

Drag racing is a fast-paced car race where two cars go straight down a track to see which one is faster. It's all about how quickly they can accelerate.

Car

Dodge Vipers

"...st it went, but it's faster than any of the, the vipers. Well, you can't say how fast it went because yo..."

The Dodge Viper is a super-fast sports car that has a really strong engine, which makes it exciting to drive. People talk about it because it's one of the most powerful cars made in America and is designed for speed and performance.

Car

Lucid Air

"... a direct injection head. Um, they move the best air as far as like the standard GTs or like a truck h..."

The Lucid Air is a fancy electric car that runs on batteries instead of gas. It's known for being very high-tech and can go really far on a single charge, making it a cool option for people looking for a luxury car without using fuel.

Car

Lamborghini Huracan

"...ou also, uh, build here. You do the V 10 for the Huracan. Yep. We used to do the V 10 for the, um, the, u..."

The Lamborghini Huracan is a super-fast sports car that has a really powerful engine and looks very stylish. People love it because it's not just about speed; it's also a luxury car that shows off great design and engineering from Italy.

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