Remember, under normal circumstances the compressed air and gas mix is ignited by a spark plug. Personal correspondence. Copyright 1996-2022, NHRA. New pistons and rings, new rods, new rod bearings. Run the engine on 110 pump octane leaded racing fuel and the compression ratio can be bumped up to 13:1. How NPR Morphed Into a Voice for the Elite Establishment, US Households Lost Over $7,400 Under Biden, Weaponizing COVID to Promote Collectivism, THIS DAY IN HISTORY Articles of Confederation adopted 1777, New Analysis of COVID Virus Suggests Fauci and Barics Fingerprints on Pandemic Bug, Doug Casey on Silvers Many Uses and What It Means for Its Future Price. Example: In a dramatic methanol fuel mixture test, a 2,000 hp blown alcohol engine combination was altered to test excessive enrichment. 3/10 0-60 Mph In Less Than One Second. To Contact Hardscrabble Farmer before supplies run out: or on a mobile device, scan this QR code: To Donate Monthly via Stripe, click here. At full throttle each cylinder is consuming a staggering 1.4 gallons per second! That is a loss of over 70 percent of the power from excess enrichment. These can be converted to pounds of fuel. The engine . In order to cross the finish line 1.5 sec later 440 ft further down the track would require 12.16 gs of deceleration to slow the dragster from 400 mph and amazingly would be going 200 mph, the same speed as the Vette. What engine do funny cars use? The top speed record is 333.00 MPH (533 km/h) as measured over the last 66 of the run (09/28/03, Doug Kalitta). "At the higher engine speeds, all that liquid fuel acts like a choke that blocks the airflow," Armstrong says. Extra fuel from enrichment does not burn. My buddy jerry duke jr. used to race top fuel. Ironically, our Kaase Boss engine in this same issue would not pass tech due to its 521 inches. Here's the good news: You don't have to know anything about the functioning of your engine to make sure you're putting fuel with the right octane rating in your tank. . Features:Women in Motorsports: Jillian McLaughlin, Features:Women in Motorsports: Janine Shoffner, Features:Women in Motorsports: Katie Coleman, Features:Women in Motorsports: Hannah Maloof, Content for engine professionals and enthusiasts. Specifications. Interior or Exterior - All Year Round
For example, a typical 14-71 Roots blower displaces 550 cubic inches per revolution. High-amperage magnetos. Cylinder heads were surprisingly stock, with minor porting -- similar to port matching common to performance . Over a mile up the road, a Top Fuel dragster is staged & ready to launch down a quarter-mile strip as you pass by it. At higher blower speed with high boost making about 1,800 hp, fuel injection jetting was adjusted for more fuel. * If spark momentarily fails early in the run, unburned nitro builds up in the affected cylinders and then explodes with sufficient force to blow cylinder heads off the block in pieces or split the block in half. * One Top Fuel dragster 500 cubic-inch Hemi engine. Monster fuel pumps-Sid Waterman The secret to power is hidden in nitromethane's chemical formula of CH3NO2. http://www.ftc.gov/bcp/edu/pubs/consumer/autos/aut12.shtm. NHRA rules now limit virtually all aspects of the fuel superchargers, including the inlet and outlet dimensions. It was hard to take off from a stop without barking the tires. Years back after installing his own engine dyno he called me when he blew up his first engine on the dyno. He owned and sponsered his own car. Inside the Beast Copyright 2022 Babcox Media Inc. All rights reserved, 1115 Old Coachman Rd., Clearwater FL 33765. uel mixture variations are often the reason one engine build wins in racing and another blows up. That's also why they keep the exhaust valve small, so it's easier to open.". You have the advantage of a flying start. Do Top Fuel dragsters use turbos? MV Agusta Dragster RC SCS Horsepower Horsepower: 140HP Engine max Power @ 12.300 R.P.M. Fuel mixture variations are often the reason one engine build wins in racing and another blows up. A few years ago, we did an extensive nitro test program in our blown drag race altered racecar. * Dragsters reach over 300 MPH before you have completed reading this sentence. NHRA Top Fuel dragsters can exceed 280 mph in just 660 feet! Director of Approved Auto Repair at AAA. Just Like -YOUR- City Council, Im Declaring an EMERGENCY! And just what is high-octane gasoline and why do so many filling stations and oil companies push it so hard? "Putting high-octane fuel into a car that only needs low-octane fuel is a total waste of money," says Arman. I always knew Top Fuel cars were the top of the mark when came to acceleration, g forces, speed and power but I had no idea they were this extreme! The drag racers who experimented with the fuel in the early '50s, included Joaquin Arnett of Bean Bandits fame. Nitro fuel mixtures are run a lot richer than other common fuels used in drag racing. Estimates of compression ratios were in the 5.5 or 6.0-to-1 range. The vapor burns first, creating enough heat to begin to vaporize the rest of the liquid fuel. Today, the engine can be found in Chevy, Dodge, Ford, and Pontiac Pro Stock cars and may be the most refined engine to ever grace a National Hot Rod Association dragstrip. A Top Fuel dragster can reach 335 mph at top speed and make a thousand-foot run in just 3.62 seconds. This excess amount of fuel instead handicapped combustion from excess ignition vaporization. It was so excessive that power was reduced to 550 hp at full throttle, full boost and full RPM. Subscribe now to receive Engine Builder magazine in print and/or digital each month, and our Engine Builder newsletter, Engine of the Week newsletter or Diesel of the Week newsletter directly in your inbox each week. At low blower speed with low boost making about 900 HP, fuel injection jetting was adjusted for less fuel. 10 Ways to Proactively Protect Your Engine, 5 New Engine Technologies That Make Cars More Fun to Drive. In order to reach 200 MPH well before half-track, the launch acceleration approaches 8 Gs. An easy way for computing air-to-fuel ratio for tuning is to determine the air weight and fuel weight per revolution. Klockau Classics. To be more specific, a piston compresses the fuel and air mix in the combustion chamber of the engine. 2.2 2. Instead, it goes out the exhaust as wasted fuel. The dynamic compression from a combination calculates out to about 15 to 1 (Ref. Every element is engineered to act in a predictable . That is a great article, IS. Custom Union Designs on Request
Most of the engines we built were for circle track racing but we built some truly savage street racing engines. If your calcs are correct that the dragster would have to hit 400 mph to catch the Vette in three seconds, and immediately slammed on the brakes and cut speed to 200, it is has to be way in front, not just 5 yards. Mechanics usually don't, either," says Mike Arman, who has written numerous technical manuals on airplane and motorcycle engines. MIA I defer to your physics. The spectacular white flame seen above the stacks at night is raw burning hydrogen, dissociated from atmospheric water vapor by the searing exhaust gases. Get the latest news, insights, and more delivered directly to you inbox. A few years ago, we did an extensive nitro test program in our blown drag race altered racecar. This can result in more power. Had no idea of the extremes of that sport. Torco Racing Fuels is another company with a good history of making quality racing fuels for drag racers. Enter your email address to subscribe to The Burning Platform and receive notifications of new posts by email. catch(e){var iw=d;var c=d[gi]("MarketGidScriptRootC12743");}var dv=iw[ce]('div');dv.id="MG_ID";dv[st][ds]=n;dv.innerHTML=12743;c[ac](dv); If we assume that max power is around 8500 rpm, and that it is 10 000 hp, then. makes more horsepower (8,000 HP) than the first 4 rows of cars at the Daytona 500. At peak power, each 62ci cylinder generates 1,000-plus horsepower, equaling 16 hp/ci. With gasoline, the air/fuel ratio for best power is 12.5 parts air to one part fuel (12.5:1). Fuel cost is approximately $3000 per 1/4 mile run including warm up and burn out to heat the tires. Here's why I don't work on other people's cars for money. At 200 mph the Vette will cover the 1/4 in 4.5 seconds flat and will finish 17 feet behind the fastest ever dragster. In-Process Gauges(Cam and Crank Grinders), Magnetic Particle Inspection Crack Detection, 2,000 Horsepower Single-Turbo 6.7L Cummins, Turbocharged 1,500-Horsepower 6.7L Cummins Engine, Compound Turbo 6.0L Powerstroke-Swapped R35, Mechanically Injected Triple-Turbo DX460 Engine, liquid-to-vapor phase change occurs from ignition vaporization.. In a supercharged engine, the size of the blower, blower overdrive, blower efficiency, and air density determine the pounds of air through the engine. Hondas, Toyotas, Scions. If you accidently get it a little too lean or put in a little too much timing it will be much more forgiving. * A stock Dodge Hemi V8 engine cannot produce enough power to merely drive the dragsters supercharger. Top Fuel is also a place where myths abound, especially in regard to ignition systems. This greater level of methanol enrichment keeps the temperature below that. New Car Reviews. However, for low percentages of nitro, too much extra fuel under power cools combustion and makes ignition difficult just as it does with alcohol fuel. That works out to roughly 45 gallons per mile! llpoh says: * Under full throttle, a Top Fuel dragster engine consumes 1 gallons of. Sprint cars (circle racing) typically run normally aspirated engines on methanol. The fastest speed on record is 338.17 mph (Top Fuel) at 1,000 feet. Ignition timing is 50-55 degrees BTDC! * If spark momentarily fails early in the run, unburned nitro builds up in the affected cylinders and then explodes with sufficient force to blow cylinder heads off the block in pieces or split the block in half.. I stopped my speed activities all legal when I entered a cornfield in my 88 Mustang GT at around 110 mph. "It usually does." The top speed record is 333.00 mph (533 km/h) as measured over the last 66' of the run. Using a higher-octane fuel than your car requires won't hurt anything, but it also won't help and you'll be paying more for it. Just saying. Answer (1 of 2): The actual figures for these things are usually not published, but numbers like "around 10 000 horsepower" is often used. It just may not make a ton of power. The outer part of the car is made mostly of chromoly steel tubing and carbon-fiber composite, in what is . Standing within 30 feet of a Top Fuel car at WOT feels more like an explosion or some kind of uncontrolled crash of noise, pressure, and caustic, yellow-orange gas that instantly burns your nostrils. The current Top Fuel dragster elapsed time record is 4.441 seconds for the quarter-mile (10/05/03, Tony Schumacher). Nicknamed King of the Jungle II, this Trans Am is a Pro275 drag car built by Cory Clemens of Clemens Motorsports Unlimited LLC. You can't open it too early-like before 82 to 84 degrees before bottom dead center (BDC) or it will just break parts. However, gasoline is limited in the amount of enrichment since extra fuel will fowl out the spark plugs. AFR is the ratio of the weight of air to the weight of fuel. Submit all factual errors to the above cited website. It is not the volume of air such as cubic feet per minute (CFM), nor is it the rate of fuel consumption such as gallons per minute (GPM). Cylinder Head Assembly/Disassembly Equip. It's easy to find what octane rating a gas has: Stations are required to post them on bright . Through the years, many racers who added low percentages of nitro went slower. Just as you pass the Top Fuel Dragster the tree goes green for both of you. The methanol helps suppress detonation, which makes the fuel more stable. The stoichiometric value is the ratio where all of the fuel burns with all of the oxygen from the air. (2) Nitro has more oxygen for hotter combustion, so more fuel is needed. or other units of measure. Compression Ratios. 2,200 Horsepower 6.4L Shredder Series Cummins Engine, 632 Big Block Reher-Morrison Nitrous Engine, 2,000 Horsepower Single-Turbo 6.7L Cummins Engine, Nitrous-Powered 478 cid Big Block Chevy Engine. The dragster went 8 mph faster and 0.2 seconds quicker ET than the methanol setup with all else remaining the same. A Top Fuel engine will consume more than 14 gallons of fuel over the entire time from start-up to the finish line. The heat of the compressed air lights the fuel spontaneously. Today, the opposite is true. Dec. 15, 2011. The only time they broke even was with a top three finish. The guy I used to race and build engines with is still doing it. The nicest thing about lower compression ratios is that it makes your tuning window wider. Rich AFR values are common, ranging from a low of 3.5 to 1 to a high of 4.8 to 1. Check it out! window.MGWidgetTitle12743 = "Promoted Content"; (function(){ Spokesperson for American Petroleum Institute. The fuel is tricky to blend at the proper ratio because it's mixed by weight, which depends on its temperature. But when that does not happen, and instead the mixture explodes in the combustion chamber rather than being ignited by the spark plug, that is called detonation -- or, as it is more commonly known, knocking and pinging [source: Nielsen]. The current Top Fuel dragster elapsed time record is 4.441 seconds for the quarter-mile (10/05/03, Tony Schumacher). Thanks for posting.
We realized that nitro burned slower. But a lot of this fuel is used to cool the burn. That from a standing start, NHRA Top Fuel dragsters accelerate faster than a jumbo jet, a fighter jet, and a Formula One race car! According to AAA's Nielsen, using a higher-octane fuel than your car requires won't hurt anything, but it also won't help -- and you'll be paying more for it, so it hurts in a different way. The tremendous amount of fuel present in the cylinders demands an immense amount of current flow to spark the combustion process. The dragster went 8 mph faster and 0.2 seconds quicker ET than the methanol setup with all else remaining the sa, NGK Spark Plugs Announces Appointments to Leadership Team, Enter to Win Engine Builder's Dream Engine Giveaway. . Increased enrichment of methanol or ethanol fuels dramatically reduces combustion chamber temperatures. My calcs were a quick scribble that said it could not be done no way the dragster could finish only five yards in front at 4.4 seconds, yet catch it from behind in three. However, in drag racing, elapsed time is the . The end goal was to race in NASCAR but the bastards wouldnt license me since Im blind in one eye. Parachutes for stopping-Simpson innovation. In a normally aspirated engine, the size, volumetric efficiency, and air density determine the pounds of air through the engine. While not nearly a dragster, it came standard with a boost gauge a tach, and a 160 mph speedometer. The valves close and the piston moves up, compressing the 500 cc charge. In case you're wondering, nitromethane does not mix well with gasoline, tending to separate into layers much like water and oil. Its first use in competition is shrouded with various first-use claims, but among the accomplishments of record is nitro's first successful use in a circle track Midget driven at the famous Gilmore Stadium in 1950 by future Indy 500 winner Roger Ward and tuned by Vic Edelbrock Sr. A Top Alcohol Dragster can travel as fast as 285 mph in the quarter-mile. So yes, superchargers do suck some power (the supercharger of a Top Fuel dragster consumes over 900 hp so even a Hellcat couldn't power it) yet it . But this takes time, which means earlier ignition timing. "As the piston moves down the cylinder, it draws in 500 cc of air and fuel. * THE BOTTOM LINE: Assuming all the equipment is paid off, the crew worked for free, & for once, NOTHING BLOWS UP, each run costs an estimated $1,000 per second. When paired with higher compression and/or higher boost, more enrichment of alcohol fuels can retard detonation or overheating. According to Arman, knock sensors are so-called piezo-electric microphones bolted to the engine block. The BME Top Fuel Dragster backing up to the starting line after a burnout at Houston in 2016. The dragster engine redlines at an rpm of 8250. Top fuel dragsters are capable of producing 11 000 horsepower from their engines, and they weigh approximately 2330 pounds each. Box 1520,
Then again, if your car is making knocking and pinging noises, it can be a good move to try a gas with a higher octane rating. Mail to:
1971 Chevrolet Caprice: Chevy goes Brougham! "You can't pour it out of a gallon gas can that fast," Miller comments. The Supercharger If you've never experienced the raw power of a pair of Top Fuel cars blistering the dragstrip, the initial sound pressure shock wave blasts you in the chest and assaults your eardrums. For gasoline or alcohol fuels, that value represents only the amount of air and fuel that burns. This longer burn is also why the header flames are so easy to see even during daylight. In a normally aspirated drag racing engine with 5 to 1 AFR, over 20 percent extra fuel is supplied for cooling. Otherwise, don't pay the extra 15 to 20 cents per gallon for a higher octane fuel. Porter, Reid. At 50 percent overdrive, Miller says the blower easily pushes 60 psi of boost pressure (that's four atmospheres), and at 12,450 rpm rotor speed, the Gibson/Miller supercharger is capable of 3,750 cfm. It is simple since it is independent of engine speed. Just let that last fact settle in for a moment. Few people eagerly anticipate a visit to the gas station. Miller says if you compute the actual mechanical ratio of air and fuel with today's fuel engines, "the numbers get closer to 3 pounds of nitro for every 1 pound of air. Author of numerous technical manuals on engines and FAA Advanced Ground School Instructor. Given the volume of liquid fuel being injected to the cylinders I wonder if the initial cause of failure during a loss of spark might be due to the in-compressible nature of liquids. Football. This creates the odd situation where many big-inch street engines would be illegal for use in Top Fuel. The cylinder pressure is so high that the valve just won't open. My bother supported my niece in 1/4 mile races all over the US. If your vehicle requires a high octane rating, the manual will tell you. Read ahead to get a grasp of some of the most important terms you need to understand in order to choose the right gas. Fuel mixtures for drag racing and most other forms of racing are run a lot richer, especially with mechanical fuel injection. How much liquid is injected into the cylinder at max revs? The steep cost to fill up a tank is just one of the reasons to feel a little agitated as you pull up to the pump; figuring out which gas to select in order to ensure your vehicle runs properly can also be a quandary. In this world of 11,000 horsepower, sub-4 second, over 330mph Top Fuel dragsters, it is sometimes hard to relate to 1960s fuel dragster technology, or lack thereof. Top Fuel Dragster Body. Top Fuel facts from: http://www.sccoia.org/articles/top-fuel-dragster-fast-facts/. How much does a Top Fuel dragster motor cost? The Funny * Under full throttle, a dragster engine consumes 11.2 gallons of nitro methane per second; a fully loaded 747 consumes jet fuel at the same rate with 25% less energy being produced. Modern electronics and fuel options have allowed for compression ratios at 12:1 to 15:1, which were much too high in years past . What you'll discover is that while a Top Fuel engine appears quite tame on paper, it's the synergy of fuel, spark, and boost that makes it violent. The Paul Schiefer slipper clutch along with Bruce Crower and the Crowerglide. Man-Cave, Home Office or Cabin
The crew does this in about two hours between rounds. This tremendous volume of fuel is what drives the requirement for the equally serious amount of ignition power required to light all this fuel. I came across this video via knuckledraggin.com which led me to the fact sheet below. The mechanical fuel injection was jetted to deliver over twice the amount of methanol to the engine than conventional amounts. She was racing small time. than the first 4 rows at the Daytona 500. The engine of the dragster reaches its maximum speed at 8250 revolutions per minute. Show yourself, and I will teach you how to count to one. Top Fuel dragsters reach 60 mph in 0.8 seconds. Nitromethane . They call it "effective compression ratio" and it combines the compression ratio of the stock engine with the amount of air that any particular supercharger can compress into the cylinder. Just five years ago, Brandon Sandlian was pretty green to drag racing and engine building. A top fuel dragster accelerates from a standstill to 100 mph . Which math challenged idiot gave me a down vote? The popular MSD Super 44 magnetos are so powerful that they deliver 1.2 amps of electrical energy across the spark plug gap each time a plug fires. The fuel can be measured in gallons per minute (GPM), cubic centimeters per second (ccs per sec.) Dec. 13, 2011. This is the approach that we use throughout our technical manuals and our fuel injection jetting calculator. But that hasn't stopped racers from improving the breed. They have hemispherical combustion chamber cylinder heads. Top Fuel. The horsepower doesn't really come from peak cylinder pressure. But, you only get all of that if you subscribe. From this and additional tests using various percentages of added nitro, we concluded that any percentage of nitro addition will increase power provided the volume is increased for the appropriate AFR for that percentage of nitro. It creates a reduction in flame speed and creates incomplete combustion. What's the connection between compression ratio and fuel economy. First, some useful info: * One Top Fuel dragster 500 cubic inch Hemi engine makes more horsepower. "People who modify engines must calculate this to determine -- which usually means guess -- the octane ratings of the fuel required.". var i=d[ce]('iframe');i[st][ds]=n;d[gi]("MarketGidScriptRootC12743")[ac](i);try{var iw=i.contentWindow.document;iw.open();iw.writeln("
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