The engines in Nascar Sprint Cup cars are 90-degree pushrod V8s, just like those that have powered many vehicles on American roads for more than 50 years. But today, the engine under Jimmie Johnson’s hood is a custom-made 850-hp 358-cubic-inch thoroughbred that’s optimized to run flat-out for no more than 1000 miles.
What do Nascar engines rev to?
It is made out of a steel alloy specially designed for valve spring service. It lets engine designers build motors that’ll safely rev past 10,000 RPM. It lets them build motors with higher valve lift, which lets more fuel into the cylinders.
Does the Audi R8 have a flat plane crank?
The Audi R8 twin turbo V8 is a flat-plane crank engine. Cross or flat-plane cranks only apply to V8s – the R10 has a V12 so the crank is of a completely different design altogether.
Can a V6 have a flat-plane crank?
It’s very unusual to have a V6 with a flat-plane crank, but we’re told Ferrari might go that route, which would make a most strange noise.
Why do flat plane cranks rev higher?
With each crankpin journal (the bits the connecting rods attach to) at 180 degree intervals, the flat plane crank tends to be higher revving than it’s cross plane counter part. That’s because the pistons are firing evenly between their banks (L,R,L,R,L,R,L,R, etc.)
How long does a NASCAR engine last?
Most production car engines are designed to last over 100,000 miles. NASCAR race car engines are designed to last one race (500 miles, in the case of the Daytona 500). While the same version of an engine is typically used for an entire season, it is rebuilt after each race.
Can you buy a NASCAR engine?
Chevrolet manufactures R07 engines, which can be purchased new through one of the licensed race teams, such as Hendrick Motorsports, but it’s difficult to purchase a complete engine from a team. For Hendrick, the pistons, oiling system, and camshafts are top-secret bits you can’t buy.