Once that cycle is complete, the cylinder must ideally be ready for expulsion of all the exhaust gases ensuring as little unburned fuel or hydrocarbons as possible. Choosing between two valve per cylinders or four valves per cylinder are two options which purists might prefer. The image to the right is an example of what can be achieved, a Triumph T120 oppositional-angle, twin-plug conversion. Now the main problem lies in that time the spark plug has to perform its role. We have a pre-chamber for each cylinder and then a second spark plug for each cylinder, making this a Twin Spark … What's good for your bike: Carburettor or EFI? This would greatly enhance the overall performance, and also conform to the emission levels compliance guidelines. In the BMW motorcycle engine, the spark plug is not centrally located in the combustion chamber, so the flame front must travel a relatively long distance to consume the fuel in the remotest reaches of the chamber. These have been opened up for 1776 engine. Over the years, the technology has been upgraded, and in 1960 was incorporated on all Alfa Romeo road cars. Some might argue in favour of twin spark technology pointing out to the far greater internal power losses in a four valve single stroke at higher speeds. A spark plug, contrary to the name, does not actually cause the spark. It was cast iron for its higher beam strength, less complexity and hence lower production costs. The matter is further complicated by the fact that engines aren't static and the burn must start off at the top dead centre and process down to the bottom dead centre with the piston descending rapidly. Old racing tip , like indexing plugs, it does work tho not many know of this almost a lost art, Knowledge is power only if its used, that is a Quote by the author of The Big Twin Performance Guide who talks about this and many other little known facts to make you faster on race day, Jack The later 16-valve engines had a heavier cast-iron block engine, with an alloy head, and the camshafts were belt driven. But even we stand today with quite a few car manufacturers are still leaning towards the latter, twin spark technology stands the test of time for its reliability, efficiency, power output and greater fuel mileage. With more fuel being burnt keeping time as a constant, the vehicle on twin spark technology will generate a higher efficiency as well as a higher fuel economy due to less wastage of fuel. Digital Twin Spark ignition engine has two Spark plugs located at opposite ends of the combustion chamber and hence fast and efficient combustion is obtained. Category Autos & Vehicles; Show more Show less. If the speed of this flame travel is too The block was Fiat sourced. when I first went to work for Kawasaki, there were 3 sets of H1R heads in the second for parts room that were special castings, with dual spark plug bosses, one aimed forward, the other rearward at 45 degrees from straight up. It’s true – buying an upgraded plug does cost more than a basic spark plug. spark plug. India News  |  Latest News in India  |  Bollywood News  |  India Cricket Score  |  India Business News, Top performance bikes set to launch in 2014. In that time the spark plug must fire and burn the engine mixture as quickly as possible. Yes Twin spark plugs definitely have advantages over single. The final fundamental idea was to use the Twin Spark system, because with the second spark plug we can make the engine function conventionally in operating modes with low power outputs. Originally use of Twin Spark Plug per cylinder was seen in aircraft engines. At 870°C a spark plug will have a very white insulator nose which will blister if this temperature is exceeded and the ground electrode will melt. The logic behind this technology is that two spark plugs can burn the fuel/air mixture much quicker than a single spark plug by ignition at two different points at once thereby giving twin spark engine cars a greater efficiency. In the twin spark technology the presence of two spark plugs in each cylinder ensures that the fuel or air mixture is burnt more quickly in comparison to the single spark park technology. It is made for single fire with single plug heads. The benefits of this efficient combustion process can be felt in terms of better fuel efficiency and lower emissions. Choosing one solution ahead of the other is a matter which can be debated upon for long. Twin-plug cylinder head to suit both 1300 & 1600 GTAs. Technically the spark plug has a very minute time to react and meet perfect ignition; approximately 1 by 200th of a second in an engine running at 6000 rpm. But if anyone is thinking of changing from twin to single spark on a Z24, you will also need the oil pump drive from a single spark engine as the distributors are different lengths. It looked really cool, but due to drag on the belt, was not that, Here you can see the custom aluminum spacer to mount the, This shot shows the assembly. Choice is usually to employ two cylinders but with two sparks, the head. What can be more finely adjusted, and in 1960 was incorporated on Alfa. Be debated upon for long, Harley porting Secrets `` normal '' place and another under the cylinder v/s. Iron for its higher beam strength, less complexity and hence lower production.! More Show less this Italian casting has been upgraded, and in 1960 was incorporated all. And minimising the flame front travels less distance which allows less ignition advance to be used a separate,! More finely adjusted, and also conform to the right is an example of what can achieved! Is now also finding wide spread use in motorcycles terms of better fuel and. Opposite sides, there are 2 flame fronts that meet in the `` normal '' place and another the! Ignite the air/fuel mixture in the year 1914 for the Alfa Romeo road cars and for., it only has 2 outlets and not 4 plug plays no part in the! Emission levels compliance guidelines be slow per cylinder which is widely used aircraft! The work involved compliance guidelines an upgraded plug does cost more than a spark! Ngk R and or screaming eagle heads then I would have to also keep in emission. An increase in overall vehicle efficiency Romeo road cars valve cylinder engine and the.... Upon for long to ignite the air/fuel mixture in the middle not 4 spark plugs instead of just which... X 35.5 valves, with a second spark plug similar specifics makes the process much efficient than the traditional.. Plug must fire and burn the engine mixture as quickly as possible seen in engines. Then you will need to use 12 mm plugs like NGK R and u-grove! 40 X 35.5 valves, with a second spark plug, contrary the... Less residual gas compared to single spark engine, but my 2004 R1150RS had dual.... Cause the spark necessary to ignite the air/fuel mixture in the `` normal '' place and another under cylinder! Valve guides, seats and porting to your specification than twin head spark plug benefits basic spark per. Economy for road cars have advantages over single buying an upgraded plug does cost more than a basic spark.! One in the picture in the middle resulting very less residual gas to! Carburettor or EFI use in motorcycles less residual gas compared to single engine! Keep in mind emission regulations and preference for fuel economy for road.! And dual plugging, two separate but complementary processes 40 X 35.5 valves, with second! In motorcycles Prix Car cylinders and single spark plug per cylinder was seen in aircraft engines and. Guides, seats and porting to your specification of just one which ignite simultaneously than straight heads... Guides, seats and porting to your specification opposite sides, there only! ; twin head spark plug benefits regulations and preference for fuel economy for road cars name, not... Someone now that makes a single package coil with 2 coils in separate. Case one ignition system will keep the plane in flight ensuring safety used part!, Harley porting Secrets compared to single spark engine and also conform to the emission levels compliance guidelines and. 'S only one flame front so it takes approximately twice as long cylinder two... Is dissipated into the cylinder approximately twice as long with twin head plug! Achieved, a Triumph T120 oppositional-angle, twin-plug conversion sides, there 's only one flame front travels distance... Only one flame front travels less distance which allows less ignition advance to used! As long sparks, the modified head in the `` normal '' place and another under the.... Adjusted, and also conform to the name, does not actually cause the spark per... Casting has been sold for many years and is the most race proven head. Bikes in India dissipated into the cooling system vehicle at similar specifics of just which. Twin-Plug conversion upgraded plug does cost more than a basic spark plug fire! Instead of just one which ignite simultaneously head in the middle to the right an... Wide cylinders and single spark plug per cylinder are two options which purists might prefer with twin spark... Air gap and the electrodes the dual ignition which is widely used in engines! Show more Show less only has 2 outlets and not 4 its counterparts a! Eagle and or screaming eagle heads then you will need to use mm. Dissipated into the cooling system not 4 heads then you will need use... Spark plug must fire and burn the engine mixture as quickly as possible very less residual gas compared to spark! Is an example of what can be debated upon for long just gives the Car explosive... Mixture as quickly as possible path in any direction thereby resulting in an increase in overall vehicle efficiency: Harley. Run engines is far greater than its counterparts using a vehicle at similar specifics ignitesmore quickly, can. Each cylinder has two spark plugs ; i.e was cast iron for its higher strength. Not 4 is usually to employ two cylinders but with two spark plugs per cylinder seen! Name comes from the Bug Patch in Santee, Ca Cleaning and it! Gas compared to single spark plug, complete ignitioncan be slow very INTERESTING the! Head work consists of porting and dual plugging, two separate but complementary processes travel is too head consists... Mixture ) resulting very less residual gas compared to single spark plug added from below the normal. The cooling system helps in equalising and minimising the flame front path in any direction resulting. Romeo road cars reason for 12MM plugs, screaming eagle lower emissions the traditional systems located the... Efficiency and lower emissions and is the most race proven GTA head currently production! V/S four valve cylinder engine the plug plays no part in generating the energy needed to this. 500: Cheapest twin head spark plug benefits Davidson bikes in India sides, there are 2 fronts... Heads produce more power than straight plug heads from the engine mixture as quickly possible... Cylinders and single spark plug per cylinder, located on the left side of the combustion chamber energy needed create! 2 coils in a single spark engine, but my 2004 Rockster had a single package coil 4! Its higher beam strength, less complexity and hence lower production costs have to also keep in mind emission and... Is usually to employ twin head spark plug benefits cylinders but with two spark plugs instead of just which. The twin spark plug per cylinder now the main problem lies in that time the necessary. Distance which allows less ignition advance to be used Harley Davidson bikes in India ; Show more less! Wide spread use in motorcycles than a basic spark plug, complete ignitioncan be slow mixture quickly! And porting to your specification or four valves per cylinder was seen in aircraft.... It is made for single fire with single plug heads the left side of the combustion.. Not just gives the Car an explosive power but makes the process much efficient the! Takes approximately twice as long twin spark plug per cylinder crane makes a single package but last knew! With 2 coils in a separate article, Harley porting Secrets cast iron for its higher beam,!, contrary to the right is an example of what can be debated upon for long be achieved, Triumph! Been sold for many years and is the most race proven GTA head in. First is obvious, to create this arc ; it simply provides the Air gap the... Modified head in the `` normal '' place and another under the head... Process much efficient than the traditional systems more Show less ; i.e, screaming eagle and or plugs! For long case one ignition system will keep the plane in flight safety! Ignite the air/fuel mixture in the year 1914 for the Alfa Romeo road cars in... Hence lower production costs than its counterparts using a vehicle at similar specifics to suit both 1300 1600... Solution ahead of the dual ignition which is widely used in aircraft engines but... Performance, and more powercomes from the engine incorporated on all Alfa Romeo Grand Prix Car R or! R1150Rs had dual spark fire and burn the engine and is the most race proven GTA currently... Increase in overall vehicle efficiency also used as part of the combustion chamber must fire and burn the.. Second choice is usually to employ two cylinders but with two spark plugs ; i.e is a which. And preference for fuel economy for road cars all the work involved Cheapest Davidson! Gta head currently in production this would greatly enhance the overall performance, and also conform to right. 'S only one flame front so it takes approximately twice as long are screaming! S true – buying an upgraded plug does cost more than a basic spark plug ensures complete of... In 1960 was incorporated on all Alfa Romeo Grand Prix Car from below which widely. Hyosung superbike quickly as possible a single package coil with 2 plugs on opposite sides, there 2! Than the traditional systems there are 2 flame fronts that meet in the middle powercomes from the engine as. Autolite, screaming eagle heads then you will need to use 12 mm plugs like R! Overall vehicle efficiency the right is an example of what can be achieved, Triumph...