So Close To 1st Place, Back To Leave It All Out There | Colt Carter - AMSOIL UCC 2026
Diesel Performance Podcast
Diesel Performance Podcast May 21, 2026
So Close To 1st Place, Back To Leave It All Out There | Colt Carter - AMSOIL UCC 2026

So Close To 1st Place, Back To Leave It All Out There | Colt Carter - AMSOIL UCC 2026

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39:35
So Close To 1st Place, Back To Leave It All Out There | Colt Carter - AMSOIL UCC 2026
Concept

EPA stuff

“EPA stuff” means government rules about pollution and vehicle emissions. For diesel shops, those rules can make it harder to do certain upgrades or require extra steps so the truck still meets emissions laws.

Topic

telling the customer no / lead times

He’s talking about the hard part of running a shop: sometimes you can’t finish a job when the customer wants. So you have to be honest about timing and manage expectations.

Term

flash

“Flash” here means updating the truck’s computer software. People do it to change how the engine runs, but it’s not always the best choice for every situation.

Term

dead cylinder

A “dead cylinder” is a cylinder that isn’t firing or making power. If you have more than one, it usually means something bigger is wrong inside the engine.

Concept

pull the motor

“Pull the motor” means taking the engine out so the shop can fix the real problem. It’s usually done when the issue is too serious to fix without removing the engine.

Concept

rebuild it

“Rebuild it” means taking the engine apart and fixing the internal parts that are worn or broken. It’s done when the problem is inside the engine, not just something external.

Term

diagnostic

“Diagnostic” means figuring out what’s really causing the problem before you start fixing it. It can save money by preventing the wrong repair.

Concept

EPA started coming involved

The EPA is the government agency that regulates emissions. When they get involved, it can limit or change what people can do to modify diesel trucks.

Term

overdrive

Overdrive is a higher gear that usually makes the engine run at lower RPM for a given speed. In a race, whether you’re in overdrive or not can affect how hard the truck feels when you’re trying to win.

Term

sled pull

A sled pull is a competition where your truck has to drag a heavy sled. The sled makes the truck work hard, so the truck’s setup matters a lot.

Term

burnout

A burnout is when you spin the tires to heat them up. The goal is usually better grip for the next run, though it can also wear things out.

Term

quarter

“Quarter” means the quarter-mile distance used in drag racing. It’s a standard way to compare how fast a truck accelerates.

Term

four length bars

“Four length bars” are adjustable suspension links that help control how the truck sits and moves. In a pull/drag-style setup, adjusting them can change traction and stability.

Term

spray it

“Spray it” usually means adding an extra power-boost system for the run. People do it to make more power when they’re trying something new or when conditions aren’t fully known.

Term

dyno

A dyno is a machine that tests the truck’s power in a controlled way. It helps you measure how much torque and horsepower the engine is making so you can tune it more safely.

Concept

learning curve

A “learning curve” here means they had to adjust the tune step-by-step and see what happened. You only find the right settings by testing and refining.

Term

timing

“Timing” is when the engine lights the fuel during each cycle. If you change it too aggressively, the engine can run too hard internally and get damaged.

Term

knocked

“Knock” is when the engine starts burning fuel in a rough, uncontrolled way. It’s dangerous because it can break parts inside the engine.

Term

number six piston

Engines have multiple cylinders, and “number six” is one specific cylinder. If that piston fails badly, it can cause major engine damage and even send broken parts outward.

Term

swapping axles out

That means replacing the axle parts that send power to the wheels. In a hard competition, they can get damaged and need to be changed quickly.

Term

swapping motors out

That’s when the team replaces the engine fast so the truck can make the next run. It’s a way to save time during competition.

Term

water jackets

Water jackets are the internal channels where coolant flows to keep the engine from overheating. If oil and coolant are mixing or leaking near that area, it’s a sign of a serious problem.

Term

puking oil out of the head

That sounds like the engine started leaking oil badly from the top (the cylinder head area). It usually means something serious failed, like a seal or gasket not holding anymore.

Term

radiator cap

The radiator cap controls pressure in the cooling system. Taking it off can help you add coolant, but it can also be dangerous if the system is still pressurized/hot.

Term

test fired

They started the engine briefly to make sure it was working after the repairs. It’s like a quick check before the real run.

Dodge Ram
Car

Dodge Ram

The Dodge Ram is a pickup truck used for hauling and towing. The podcast context sounds like someone is working on a hitch setup and making parts fit properly. That’s the kind of practical truck modification people do to get the right towing setup.

Dodge Charger
Car

Dodge Charger

The Dodge Charger is a car built for strong acceleration and performance. People often modify them with upgrades to make them faster and better at pulling power. It may be mentioned in a podcast when someone is talking about how the car feels when it’s working hard.

Term

nitrous

Nitrous is a system that adds nitrous gas to the engine. It helps the engine make more power quickly, usually for short bursts during racing.

Term

dino

“Dino” means a dyno test. It’s a machine that measures how much power and torque the truck is producing.

Term

firewall

The firewall is the wall between the engine area and the inside of the truck. He’s saying he had to rebuild and patch it after cutting holes for the build.

Term

open diff

An open differential can struggle when one wheel loses grip. If one tire spins, it can take away power from the tire that still has traction.

Term

AEM axles

AEM axles are the axle parts that send power to the wheels. With more power, the axles and the rear setup have to be strong enough to handle it.

Term

spool

A spool locks the rear wheels together so they spin together. That helps prevent one wheel from spinning away traction, which is useful for racing.

Brand

DHD

DHD is the company he says provided stronger axle parts. Those parts help the drivetrain survive higher power.

Term

test firing truck

A “test firing” is an initial run/verification after major work to confirm the engine starts, systems function, and there are no immediate faults. In competition builds, it’s a checkpoint before more tuning or track-specific preparation.

Term

stepping trans

He’s talking about changing the transmission gearing. The goal is to make the truck accelerate in the best RPM range for the engine.

Part

new sleeves

Cylinder sleeves are like replaceable inner walls for the engine’s cylinders. If the cylinders get worn out or damaged, new sleeves can bring the engine back to a good, round surface for proper sealing.

Term

new CGI block

A “CGI block” is the engine’s main metal housing where the cylinders are. CGI is a special type of iron that helps the engine handle a lot more stress, which matters for high-power diesel builds.

Term

D and J head solid stage three

This is a performance upgrade to the top end of the engine (the valve train). A “solid” setup usually means the valves are controlled more directly for higher-speed use, which is common in racing builds.

Term

80 over a 122

That phrase is about turbo sizing—basically how big the turbo setup is. The turbo size changes how fast it builds boost and how much air the engine can move, which is crucial for pulling hard.

Toyota A80
Car

Toyota A80

The Toyota Supra is a sports car designed to be fast and fun to drive. In this podcast, it sounds like the engine has been heavily modified with upgrades for more airflow and fuel. Those changes are usually done to make the car produce much more power than stock.

Part

flux 400 injectors

Fuel injectors control how much diesel gets sprayed into the engine. Higher-output injectors help the engine get enough fuel to make power when the turbo and other parts are upgraded.

Term

transmission is a 48

That’s the transmission model he’s using. In a high-power diesel, the transmission has to survive big torque and keep power going to the wheels without slipping or breaking.

Topic

new 72 fast class

They’re talking about a new competition class for this year. That changes who’s available to help and how the team focuses on the truck.

Term

tune in here a to b

A “tune” is the calibration of engine control parameters (fueling, boost targets, timing, etc.) that determines how the diesel runs. “A to B” suggests making a controlled change and verifying behavior from one state to another without disturbing other work.

Term

wheel set up

This is the tire-and-wheel choice. The right setup helps the truck grip better so it can accelerate more consistently.

Term

forward length

They’re talking about a measurement in the suspension setup that changes how the front of the truck sits and moves. Changing it can change how the truck launches and handles.

Term

suspension

Suspension is the system that controls how the truck’s wheels move and how the chassis stays stable under acceleration, braking, and cornering. For drag or short-track competition, suspension setup directly affects launch behavior, weight transfer, and how consistently the truck can put power down.

Term

qualifiers

Qualifiers are the preliminary runs where you prove your setup. Your results can decide whether you move on and how you line up for the main competition.

Term

A to B tune

It’s basically a “setup” for how the truck should run from one part of the course to another. Instead of trying to be perfect everywhere, you tune it to be predictable and fast for the actual run you’ll do in competition.

Term

shift left to right

They’re talking about how the truck changes gears during the run. “Left to right” means the gear changes happen at different engine speeds, which can make the truck feel faster or smoother.

Term

launches

A “launch” is the start—how the truck gets moving from a stop. Testing launches helps you see if it hooks up and accelerates the way you expect.

Term

dead hooks

“Dead hooks” means the truck grabs the ground hard at launch. The tires don’t spin much, so it can accelerate faster.

Term

five 10s

“Five 10s” means the truck is aiming for a very fast drag-race time—around five seconds and a tenth. It’s basically a target elapsed time.

Term

sweet spot

The “sweet spot” is the best setup for getting the truck to launch and accelerate well. It’s basically the point where everything lines up for traction.

Term

2400 horsepower

Horsepower is how much power the engine can make. “2,400 horsepower” is an extremely high power target for a diesel drag truck.

Term

roller

A “roller” is part of a dyno setup where the truck’s wheels sit on rollers. The dyno measures power while the engine is under load.

Concept

breaking and the repairs

They’re talking about how racing hard can cause parts to fail, which means you have to fix things often. That constant cycle of racing and repairing is stressful and expensive.

Term

fire up

“Fire up” just means turning the engine on. In a race setup, the first start can show problems right away.

Concept

blow a motor

“Blow a motor” means the engine fails catastrophically—often from overheating, lubrication failure, or mechanical damage under high stress. In performance diesel racing, it’s commonly tied to pushing power beyond what the engine’s internal components can reliably handle.

Concept

out-the-door

“Out-the-door” means the total you actually end up paying. It includes the base cost plus taxes and fees, not just the sticker price.

Concept

send it

“Send it” basically means to go for it. It’s the mindset of pushing the car/truck as hard as you can instead of holding back.

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