Dec 22, 2017 the electronic engine management system produces a fuel amount from the data map to satisfy the conditions. Engine torque for cylinder 1 blue line starts off high at the beginning of the run near 600 ft. Engine tuning and diagnostics, other for sale on racingjunk. Engine is working fine, but i want to move further and increase nitromethane % up to 2530%. When you have a familiar engine setup and always race with methanol, that task can become tried and. This feature was designed to work for typical afuel dragsters or methanol fueled engines. We have just finished up a new computer package to help tune and predict drag racing et for all types alcohol, nitro, gas of supercharged engines and racecars jetarea. It is adjusted to yield optimal performance, to increase an engines power output, economy, or durability. How to set up numerical control of air to fuel ratio for accurate tuning nitro. We offer tuning programs for blown alcohol, blown fuel and injected alcohol. Every engine tuner measures the fuel flow rate in gallons per minute with the data recorder.
These are excel spreadsheets, no proprietary software. For example, if we are racing at a track that is 2,700 feet, we run 87. Data acquisition software to analyze engine combustion pressure, detonation, intakeexhaust pressure waves. Very interesting article in this months race engine technology magazine. A blend of nitromethane, methanol, synthetic oil fuel this engine. In the late 1940s, edelbrock, a performance parts engineer and race car driver working out of his shop in beverly hills, came by a gallon of the stuff. Nitro harley sensor installation tfx engine technology in. V6 tutorials are embedded in the professional development edition of the software.
Nitromethane efi tuning questions and engine management. It is written specifically for megasquirt or megasquirtii efi users who are new to tuning engine with a programmable controller, and tries to make very few assumptions about what you already know. It is very important for you to understand at this point i accept no responsibility for your engine and its performance or lack of performance if you choose to follow this guide. These goals may be mutually exclusive, and an engine may be detuned with respect to output work in exchange for better. Accesstuner pro is tuning software for professional tuning facilities. Dec 29, 20 model airplane fuel is mostly methanol blended with castor oil and nitromethane.
Welcome to the home for all the motorsports computer software, books and racecar engineering consulting services provided by patrick hale. A rc nitro engine is a very high tech engine capable of rpms in excess of 30,000. A nitroburning engine and a top fuel engine are the same thing engines designed to burn nitromethane rather than gasoline. Jul 18, 2012 see through engine s1 e4 see through engine on nitromethane blow up attempts 1 9 crazy. Accesstuner pro allows for unlimited tuning of any accessportequipped nissan 370z, nissan 350z, infiniti g37 and infiniti g35. Density altitude indicates the weight of air relative to sea level for engine tuning. Check out our powerful online jetting calculator or bookmark one of. Vp racing fuel nitro 50 nm50 5050 mix of nitromethane. Jun 30, 2016 good tuning software performs a number of tasks. Spuds nitro notes one hot chili pepper front engine dragster. This enables you to get the most power out of your mechanical fuel injection engine in a repeatable manner. Nitromethane is a little like gasoline that has been premixed with nitrous oxide.
Cpa chiptuning engine tuning for your car, individually programmed. You may find that the best results involve a blend of tuning services at an experienced dyno facility and final doityourself tweaking using a popular scanand tune software package. Engine torque for cylinder 1 is indicated by the blue line and engine rpm by the white line. Ignition timing for methanol vs gasoline bentwings1 mechanical 10 apr 07. Nitro tuner software development started back in 1987 when i was working with norm drazy on the design and development of the psi lysholmscrew type. Our telephone email support of your initial installation and tuning is limited to one hour on a nonpaying basis and is limited to the original purchaser. Note how with 40 per cent nitromethane mixture the jet size has increased by 1. I tuned it with blend of 10% nitromethane, 5% castor oil, 3% acetone, 2% water, 80% methanole, lambda 0. Water will mix with nitromethane to the extent of 2.
Tune your engine with realtime density altitude from. Engine tuning is an adjustment, modification of the internal combustion engine, or modification to its control unit, otherwise known as its ecu engine control unit. For the engine i plan on building it to run on nitro methane fuel prolly about a 15% to 20% mixture but maybe ill try pushing it higher on another motor depending how this project goes. Simply plotting raw recorded data in a myriad of different formats is of very little value. A nitro engine generally refers to an engine powered with a fuel that contains some portion usually between 10% and 40% of nitromethane mixed with methanol. What is top fuel and how is it different from gasoline. Just like a top fuel engine, its tough to open the exhaust valve with all the cylinder pressure, says bahnmaier. Nitro 50 is a mix of 50% methanol and 50% vp m1 methanol. When you hear the term nitroburning funny car or topfuel dragster, that. Procalc uses engineering principles such as airfuel ratio in order to calculate the best jetting for your current environment.
Nitroobd2 is a chip tuning box which can be plugged. Nitromethane should only be handled, stored, or used by trained personnel who fully understand nitromethane properties and have read and understand this data sheet. This video will show you how to start the tuning of your nitro engine rc concept. Covering everything from stock turbocharger cars, seriously fast drag racers, boats, motorcycles, and daily driver modified turbo cars and trucks. All different formulas for the particular glow plug engine being ran. Nitro harley engines are unique in the hog universe. Instruments, chips, devices and software for sale to diagnose issues within an engine, and maximize its tuning for optimal performance.
Masters of methanol drag racing fuel system tricks. It will calculate all the flow areas in the fuel system, the differential pressures and the total system pressure. We wanted to know what the pressures and temperatures were as the airfuel mixture entered the top of the blower, exited the pie. Although gen iii pcms are powerful control modules, they are of little use without tuning software tochange engine and transmission operating parameters. The tuning process starts with setting the general parameters to get the engine started, and continues until the engine performs optimally under all conditions as judged by the tuner. Preliminary facts regarding methanol methanol fuel is generally harder to set up for than gasoline, therefore ct recommend its use for experienced tuners only.
Elevation changes and how they affect engine tuning. Spuds nitro notes one hot chili pepper front engine. For a nonquantitative discussion of the early days of the late 40s and early 50s i recall that up to 10% of nitromethane was added to gasoline percent volume for one shot drag runs and i also recall an early test in hot rod magazine where an ardun setup on a flathead block was treated to 10% nitromethane in the gas and put out over 400. That means that the cylinder of an engine can burn roughly 8. The following is a list of tips that every methanol fuel user should be aware of. These can be used to tune a drag race, circle track, oval track or sports car engine for speed and power, but are equally applicable to street cars,hot rods, trucks and muscle cars to improve their fuel efficiency, engine torque and power, and other. Reverse engineering of the nitro obd2 quarkslabs blog. In this context, nitromethane is commonly referred to as nitro, and is the principal ingredient for fuel used in the top fuel category of drag racing. Model airplane fuel is mostly methanol blended with castor oil and nitromethane. Results of a special nitromethane fuels testing program in a roots blown methanol drag racing v8 how to set up numerical control of air to fuel ratio for accurate tuning nitro introduction to lambda tuning of nitro air density corrections horsepower corrections power analysis for. Ct racing have tested methanol fuel extensively over the last five years and have learned how to set up engines and carburetors for most atv applications. See through engine s1 e4 see through engine on nitromethane blow up attempts 1 9 crazy. E2 the rotary valve spx engine block, cylinder and crankshaft.
The professional tuner can choose to lock the map in order to prevent unauthorized reproduction of the map or inappropriate use on other vehicles. These can be used to tune a drag race, circle track, oval track or sports car engine for speed and power, but are equally applicable to street cars, hot rods, trucks and muscle cars to improve their fuel. Results of a special nitromethane fuels testing program in a roots blown. Jun 17, 2010 for the engine i plan on building it to run on nitro methane fuel prolly about a 15% to 20% mixture but maybe ill try pushing it higher on another motor depending how this project goes. Nitro tuner software development started back in 1987 when i was working with norm drazy on the design and development of the psi lysholmscrew type supercharger for nhra top alcohol dragster. With a procalc membership, you get 1 year of access to 4 fuel injection jetting calculators that will enable you to virtually jet your mfi engine according to the local weather and elevation.
Nitromethane is a highly combustible substance that is generally only used in very specifically designed engines found in top fuel drag racing and miniature internal combustion engines in radio control, control line and free flight model. Nitromethane is made from propane, and i read somewhere that if nitro were only 4 degrees less flammable, it wouldnt even have to carry the red diamond flammable label. We know were getting a lot of flex on the exhaust pushrod. Results of a special nitromethane fuels testing program in a roots blown methanol drag racing v8 how to set up numerical control of air to fuel ratio for accurate tuning nitro introduction to lambda tuning of nitro air density corrections horsepower corrections power analysis for various percentages roots blower analysis. The actual engine air flow rate going down the race track is much more difficult to determine. In this nitro engine tuning segment of the redcat racing pitstop how to rc nitro video series, you will learn how to properly tune your rc nitro. Home forums specific tech sections efi tuning questions and engine management the turbo forums the discussion board for both hard core and beginner turbocharged vehicle enthusiasts. Vp fuels are available for pickup only in our lindenhurst ny showroom, and cannot be shipped. The engine responds to the readjusted amount of fuel.
Jul 15, 2008 you tipacal only mix nitromethane with menthanol. Knowing what the airfuel ratio is for your specific engine combination requires knowing both the air flow rate and the fuel flow rate. Nitromethane ch3no2 is an inflammable waterclear liquid with a mild odour, containing approximately 53% by weight of oxygen. These engines are used in all sorts of rc nitro racing hobbies. Oxygen sensors in the exhaust measure whether the exhaust has a fuel rich or fuel lean characteristic. This is a user specified tooth number on the crank wheel with the significance that the cam synch must come after this tooth and before the first real tooth after the gap. Gasoline is a hydrocarbon, and the common chemical formula for gasoline is c 8 h 18. The is an introduction to tuning with a programmable electronic fuel injection ecu. When you add percentages of nitro, things suddenly get more complex. Nitromethane is a fuel that is used in racing, particularly in drag racing, to provide more power. Im not sure if that is true or not, but if you pour a little out on the pavement and throw a match to it, youll see that it isnt very flammable at all. To optimize the engine performance including power, efficiency, cold start performance, etc. Jetarea also includes an option for tuning nonsupercharged engines. Nitro engine tuning my guide based purely only on my experiences.
When you hear the term nitroburning funny car or topfuel dragster, that means that the engine burns nitromethane. Tfx offers concise, effective, simple to understand data analysis. You also get weather updated much more frequently in the tracks list. When you have a familiar engine setup and always race with methanol, that task can become tried and true.
Lets say i was running an aquamist water injection setup with a 5050 watermethanol mix. That is why weather stations have always worked with ratios. No matter how well you have set up your fuel injection, changing weather and environment can make your car run poorly. That data is sent to the engine management system to control the fuel down or up. Nitromethane is used as a fuel in motor racing, particularly drag racing, as well as for radiocontrolled models such as cars, planes and helicopters. Analysis is the single most important element of any engine pressure analyzer system. The basics of engine tuning involve finding the right ratio of fuel mixed with air to get the right amount of power out of your engine. An ibm thinkpad laptop is shipped with all software installed and tested. It also calculates the air density based on current ambient conditions temperature, humidity and barometric pressure and provides the correct main jet the engine needs under. My nitro pro software automatically corrects timing, blower, and compression based on weather readings. Engine tuning and diagnostics for sale on racingjunk. Methanol nitromethane blend moped on methanol and nitromethane. A wastedsequential indicator has been added to the engine status bits and is displayed on the bottom of the tuning software.
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