I'm not into stamps as such, but hemi's a sooooo cool!
The reason why they own so hard is because due to the angle on the valves, no mstter how much lift you run, the valve is never shrouded by the bore wall. Infact the further the valve opens, the less shrouded it gets. So they breathe harder than me walking from the couch to the fridge!
This is why despite having almost nil squish/quench (Except when running an insane domed piston) they dom inated the drag strip for over four decades.
They don't call me the man with the rubber arm for nothing you know.............
And they still do dominate - 99.9% of all the cars competing in both classes of Top Fuel are Hemi based design..
Some interesting factoids re Top Fuel Hemi engines if you wanted to know.
*One dragster's 500-inch Hemi makes more horsepower then the first 8 rows at Daytona.
* Under full throttle, a dragster engine consumes 1 1/2 gallons of nitro per second, the same rate of fuel consumption as a fully loaded 747 but with 4 times the energy volume.
* The supercharger takes more power to drive than a stock hemi makes.
* Even with nearly 3000 CFM of air being rammed in by the supercharger on overdrive, the fuel mixture is compressed into nearly-solid form before ignition. Cylinders run on the verge of hydraulic lock.
* Dual magnetos apply 44 amps to each spark plug. This is the output of an arc welder in each cylinder.
* At stoichiometric (exact) 1.7:1 air/fuel mixture (for nitro), the flame front of nitromethane measures 7050 degrees F.
* Nitromethane burns yellow. The spectacular white flame seen above the stacks at night is raw burning hydrogen, dissociated from atmospheric water vapor by the searing exhaust gases.
* Spark plug electrodes are totally consumed during a pass. After 1/2 way, the engine is dieseling from compression-plus the glow of exhaust valves at 1400 degrees F. The engine can only be shut down by cutting off its fuel flow.
* If spark momentarily fails early in the run, unburned nitro builds up in those cylinders and then explodes with a force that can blow cylinder heads off the block in pieces or blow the block in half.
* Dragsters twist the crank (torsionally) so far (20 degrees in the big end of the track) that sometimes cam lobes are ground offset from front to rear to re-phase the valve timing somewhere closer to synchronization with the pistons.
* To exceed 300mph in 4.5 seconds dragsters must accelerate at an average of over 4G's. But in reaching 200 mph well before 1/2 track, launch acceleration is closer to 8G's.
* If all the equipment is paid off, the crew worked for free, and for once NOTHING BLOWS UP, each run costs $1000.00 per second.
* Dragsters reach over 300 miles per hour before you have read this sentence.
* The nitromethane-powered engines of Top Fuel dragsters and Funny Cars produce approximately 7,000 horsepower, about 37 times that of the average street car.
* A Top Fuel dragster accelerates from 0 to 100 mph in less than .8-second, almost 11 seconds quicker than it takes a production Porsche 911 Turbo to reach the same speed.
* A Top Fuel dragster leaves the starting line with a force nearly five times that of gravity, the same force of the space shuttle when it leaves the launching pad at Cape Canaveral.
* A Funny Car is slowed by a reverse force more than seven times that of gravity when both parachutes deploy simultaneously.
* Top Fuel dragsters and Funny Cars consume between four and five gallons of fuel during a quarter-mile run, which is equivalent to between 16 and 20 gallons per mile.
* Top Fuel dragsters and Funny Cars use between 10 and 12 gallons of fuel for a complete pass, including the burnout, backup to the starting line, and quarter-mile run.
* Top Fuel dragsters and Funny Cars travel the length of more than four football fields in less than five seconds.
* Top Fuel dragsters can exceed 280 mph in just 660 feet.
* From a standing start, NHRA they accelerate faster than a jumbo jet, a fighter jet, and a Formula One race car.
* Fuel-line pressure for Top Fuel is between 400 and 500 pounds,
* Depending on size and angle, the large rear wing on a Top Fuel dragster develops between 4,000 and 8,000 pounds of downforce.
* The 17-inch rear tires wear out after four to six runs, or about two miles.
* It takes just 15/100ths of a second for all 7,000 horsepower of a Top Fuel engine to reach the rear wheels.
* It's desirable to race with its front wheels inches off the ground for about the first 200 feet of the run. This ensures proper weight transfer to the rear wheels, a crucial part of a good launch and quick run.
* Nitromethane used to power the engines of costs about $30 per gallon...
wicked facts right there!
Another one i always remember about top fuelers is
For example Valentino Rossi moto gp legend goes across the start line at 200mph and hold that speed the whole way down the 1/4 and a top fueler leaves at same time he crosses the start the top fueller will win the race.
Insane racing iwould love to go over and see one day
Woop Woop! im all booked in to start my next epic tatt! haha its not till july tho gonna b epic, a big tree u p the side of my back and some choice birds coming out of it down my right arm to my elbow, rah row shes gonna be a big one !!!
fuck.
its an old photo
gonna b epic, a big tree u p the side of my back and some choice birds coming out of it down my right arm to my elbow, rah row shes gonna be a big one !!!