Andrew Hawkins on Why RB26 Builds Fail in America, RB vs 2JZ Debate, GTR Festival

GTR Festival is an event centered around Nissan GT-Rs and the broader Skyline/GT-R community. It’s the kind of show where you’ll see heavily modified cars, track-style setups, and a lot of culture around RB and VR/GT-R platforms.

The Nissan GT-R is a high-performance sports car known for its advanced engineering and strong track-capable performance. The podcast references the number of GT-Rs seen in the U.S., using it to set context for how common and popular these cars are in enthusiast scenes.

SEMA (Specialty Equipment Market Association) is a major U.S. automotive trade show focused on aftermarket parts and modified cars. It’s where builders and brands showcase new products, fabrication work, and unusual builds, so seeing certain platforms there is a good indicator of what the U.S. enthusiast scene is embracing.

The Nissan Skyline is a performance-focused nameplate with a long history in motorsport and car culture. In the podcast, it’s brought up alongside GT-Rs and SEMA attendance, emphasizing how many Skyline models show up at events.

“Horsepower” is a measure of engine power output, and 700 hp is a level where a car can feel dramatically different in acceleration and top-end pull. The speaker is tying power levels to how usable they are in different driving environments.

The speaker is describing extreme power targets for a Skyline GT-R build, which typically requires major engine upgrades, fuel system upgrades, and careful tuning to manage heat and drivetrain stress. At this level, reliability and traction become as important as peak horsepower.

“RB26” refers to Nissan’s RB26DETT family, the famous twin-turbo 2.6L inline-six associated with the Skyline GT-R. The speaker is comparing how an RB30/3.2 build’s sound and rev behavior stacks up against the RB26’s character.

Dyno graphs are plots from a dynamometer showing power and torque versus RPM (and sometimes boost/air-fuel data). They’re used to compare builds objectively, especially when arguing about where power comes in (midrange vs top end).

“Oversized Vows” appears to be “oversized valves,” meaning larger intake and/or exhaust valves than stock. Bigger valves can improve high-RPM breathing, but they usually require matching seat machining and careful flow testing to avoid hurting low-end performance.

The cylinder head is the top casting of an engine that houses key components like the combustion chambers and valve train. When people talk about “head” problems or “building a head,” they usually mean machining work and installing/refreshing the valves, springs, and related parts.

Valve seats are the hardened surfaces in the cylinder head that the valve faces seal against when closed. Over time, high heat and load can cause wear, so “freshening” valve seats is a common maintenance step in performance builds.

Lap time is the total time to complete one circuit. It’s a key metric for comparing cars because it reflects not just straight-line speed, but also braking, cornering, traction, and how well the car is set up for the track.

A drag strip is a straight-line racing track designed for timed acceleration runs, usually over a fixed distance. It’s commonly used to measure how quickly a car can reach a target speed and to compare builds based on performance consistency.

A “high volume oil pump” moves more oil per unit time than the factory pump. The key point here is that more flow isn’t automatically better: if the engine’s oiling/return paths can’t drain fast enough, oil can accumulate in the cylinder head and increase crankcase pressure.

A catch can (oil catch can) is an aftermarket reservoir that captures oil mist and blow-by from the crankcase before it reaches the intake. It typically connects to the breather/PCV system so oil doesn’t get sucked into the intake and cause mess or contamination.

A dry-sump system uses external oil tanks and scavenge pumps to keep oil from pooling in the crankcase. This improves oil control during sustained cornering and high-G driving, and it can reduce the risk of oil starvation or leaks compared to a wet-sump setup.

“Boost” is the extra air pressure a turbocharger or supercharger forces into the engine. More boost usually means more power, but it also increases stress on the engine and drivetrain, which is why tuning matters so much.

“Water temp” refers to coolant temperature in the engine’s cooling system. The speaker’s advice to avoid throttle blips until a target water temperature helps ensure the engine is thermally stable before loading it, reducing the chance of clearance/belt-tension issues.

Methanol is a fuel used in many drag and motorsport applications because it has a high heat of vaporization, which helps cool the intake charge. That cooling effect can change how builders size radiators and manage temperatures compared with gasoline.

“Horsepower” is a measure of how much power an engine can produce. When someone says a car has 300 horsepower, they’re usually talking about the engine’s output and how quickly it can accelerate, especially compared to stock versions.

“Wear and tear” refers to the gradual degradation from regular use—things like tires, brakes, fluids, and stress on drivetrain components. On big builds, frequent driving can accelerate maintenance needs and increase the chance of failures.

RPM is engine speed (revolutions per minute). Many ECU strategies—like power ramp rate and shift behavior—are mapped by RPM because engine response and airflow change with speed.

Electronic throttle means the throttle plate is controlled by an electronic actuator rather than a direct cable. This enables features like throttle blips on downshifts because the ECU can precisely command throttle angle.

Paddle shifters let the driver manually select gears without using a clutch pedal, typically paired with an automatic or dual-clutch transmission. The speaker is contrasting paddle shifting with another setup, implying a more “driver-controlled” feel.

Gear ratios determine how engine RPM relates to vehicle speed in each gear. Changing them can dramatically change acceleration feel, highway cruising RPM, and how well the car stays in its power band.

Wheel spin is when the tires rotate faster than the car can move forward due to insufficient traction. It’s a key limiter on street builds because high torque (especially from turbo boost) can exceed available grip.

Torque is the twisting force the engine produces, and it’s what actually tries to rotate the wheels. Turbo cars often deliver torque in a surge when boost comes in, which is why torque management via shifting matters for traction.

Drag racing setup prioritizes straight-line traction and acceleration. That often means different tire pressures, suspension settings, and alignment targets than a circuit-focused setup, where cornering balance and tire temps matter more.

Shipbox Garage is a car-focused creator/community referenced as a guest/attendee. In this context, it signals the episode’s real-world car scene connections rather than a technical topic.

Mighty Car Mods is an automotive media brand known for building and modifying cars, especially in the Australian scene. Mentioning them suggests the event has broad international car-community interest.

The Nissan Navara is a mid-size pickup truck sold in many markets. In this conversation, it’s mentioned as the biggest truck available, which helps listeners picture the kind of vehicle being discussed (a practical work/patrol-style platform rather than a sports car).