15.12.2013, 08:53
Die Hemi Köpfe sind so beliebt daß man jetzt welche umgebaut hat damit sie auf Ford V8 Motoren passen.
https://www.enginelabs.com/features/pri-...e-bullets/
The Chrysler Hemi engine, known by the trademark Hemi, is a series of V6 and V8 engines built by Chrysler with a hemispherical combustion chamber. Three different types of Hemi engines have been built by Chrysler for automobiles: the first (known as the Chrysler FirePower engine) from 1951–1958,[1] the second from 1964–1971, and the third beginning in 2003. Although Chrysler is most identified with the use of Hemi as marketing term, many other auto manufacturers have incorporated similar designs.
A hemispherical (i.e. bowl-shaped) combustion chamber allows the valves of a two-valves-per-cylinder engine to face each other across the chamber, rather than opening side-by-side. This layout makes space in the combustion chamber roof for larger valves and straightens the airflow passages through the cylinder head. This creates what is known as a cross-flow head, where the intake charge flows directly across the chamber to the exhaust valve located directly opposite it. [Actually, a "cross-flow head" designates an engine that has the intake manifold on one side only, and the exhaust on the other, as opposed to both manifolds being located on the same side of the engine, or cylinder head. A cross-flow design allows the air to flow in one side and out the other, which adds efficiency and power. A "reverse-flow" engine requires the gases to flow in, stop, and reverse direction. A hemispherical engine spreads the valves apart and places them at an angle to decrease resistance, but it's only an improvement on a crossflow head].[disputed – discuss] These features significantly improve the engine's airflow capacity, which can result in relatively high power output from a given piston displacement. But the design can also significantly increase the flow of incompletely combusted air-fuel mixture straight out of the exhaust valve. With a hemi combustion chamber, there is minimal quench and swirl to burn the fuel-air mix thoroughly and quickly; the spark plug is frequently placed at or near the centroid of the chamber to facilitate complete combustion. Hemispherical combustion chambers, because of their lack of quench, are more sensitive to fuel octane rating; a given compression ratio will require a higher octane rating to avoid ping in a hemi engine than in a wedge engine.[citation needed] Engines with hemispherical combustion chambers often use dome-topped pistons to attain the desired compression ratio but this design only works best at high R.P.M.[citation needed]
The hemi head usually has intake and exhaust valve stems that point in different directions, requiring a large, wide cylinder head and complex rocker arm geometry in both cam-in-block and overhead cam engines. This adds to the overall width of the engine, limiting the vehicles in which it can be installed.
Chrysler applied their military experience with the hemispherical combustion chamber to their first overhead-valve V8 engine, released under the name FirePower, not "Hemi", in 1950 for the 1951 model year. The first version of the FirePower engine had a displacement of 331 cu in (5.4 L) and produced 180 bhp (134.2 kW). Eventually, each Chrysler divisions had its own versions of the FirePower engine, with different displacements and designations, and having almost no parts in common. Chrysler and Imperial called their versions the FirePower. DeSoto called theirs the FireDome.
Although all manufacturers were familiar with multi-valve engines and hemispherical combustion chambers, adding more valves per cylinder, or designing the complex valve train needed for a hemispherical chamber, were expensive ways of improving the high-RPM breathing of production vehicles. By canting the angle of the NASCAR-mandated two valves per cylinder, significantly larger valves could be used. The Chrysler hemi had an oversquare 4.25inches bore and 3.75 in (95.3 mm) stroke as did the wedge-chambered big-block Chrysler RB.
The Hemi was on the Ward's 10 Best Engines list for 2003 through 2007, and again in 2009.
At the 2012 North American International Auto Show in Detroit, Dodge debuted a Mopar Customized Dodge Charger "Redline" which featured a modern 426-cubic-inch (7.0L) HEMI V8 motor rated 590 hp.
Knapp 600 PS ,der LS7 hat nur 512 Din PS.
820 Ford HEMI(13,437 LIter) Hubraum.
https://www.jonkaaseracingengines.com/pr...-hemi.html
The Preferred Choice of IHRA Pro Stock World Champions.
Warum baut man die Hemi Köpfe auf einen Ford Block das wird schon seinen Grund haben denke ich mal.
Problem der hemi Köpfe ist eigentlich hauptsächlich ihre Größe wobei sie nicht viel größer sind als ein 16 Ventil Kopf.
Aber auch hier sind grenzen soweit ich weiß passt kein LT5 in eine C5.
Auch wenn ich ihn swchon im Motorraum einen MB 124 gehen habe, aber den gibt es ja auch mit 5 Liter 32 V, als 500E, ist das erste Auto was ich fahren durfte mit ein wenig mehr Bums in meiner Lehrzeit da war ich gerade 18 alt.
War das Auto vom Pizza Wagner Chef, dannach wußte ich Hups es wäre doch möglich ein Auto zu bauen das ähnlich beschleunigt wie ein Motorrad.
Gruß Mario
https://www.enginelabs.com/features/pri-...e-bullets/
The Chrysler Hemi engine, known by the trademark Hemi, is a series of V6 and V8 engines built by Chrysler with a hemispherical combustion chamber. Three different types of Hemi engines have been built by Chrysler for automobiles: the first (known as the Chrysler FirePower engine) from 1951–1958,[1] the second from 1964–1971, and the third beginning in 2003. Although Chrysler is most identified with the use of Hemi as marketing term, many other auto manufacturers have incorporated similar designs.
A hemispherical (i.e. bowl-shaped) combustion chamber allows the valves of a two-valves-per-cylinder engine to face each other across the chamber, rather than opening side-by-side. This layout makes space in the combustion chamber roof for larger valves and straightens the airflow passages through the cylinder head. This creates what is known as a cross-flow head, where the intake charge flows directly across the chamber to the exhaust valve located directly opposite it. [Actually, a "cross-flow head" designates an engine that has the intake manifold on one side only, and the exhaust on the other, as opposed to both manifolds being located on the same side of the engine, or cylinder head. A cross-flow design allows the air to flow in one side and out the other, which adds efficiency and power. A "reverse-flow" engine requires the gases to flow in, stop, and reverse direction. A hemispherical engine spreads the valves apart and places them at an angle to decrease resistance, but it's only an improvement on a crossflow head].[disputed – discuss] These features significantly improve the engine's airflow capacity, which can result in relatively high power output from a given piston displacement. But the design can also significantly increase the flow of incompletely combusted air-fuel mixture straight out of the exhaust valve. With a hemi combustion chamber, there is minimal quench and swirl to burn the fuel-air mix thoroughly and quickly; the spark plug is frequently placed at or near the centroid of the chamber to facilitate complete combustion. Hemispherical combustion chambers, because of their lack of quench, are more sensitive to fuel octane rating; a given compression ratio will require a higher octane rating to avoid ping in a hemi engine than in a wedge engine.[citation needed] Engines with hemispherical combustion chambers often use dome-topped pistons to attain the desired compression ratio but this design only works best at high R.P.M.[citation needed]
The hemi head usually has intake and exhaust valve stems that point in different directions, requiring a large, wide cylinder head and complex rocker arm geometry in both cam-in-block and overhead cam engines. This adds to the overall width of the engine, limiting the vehicles in which it can be installed.
Chrysler applied their military experience with the hemispherical combustion chamber to their first overhead-valve V8 engine, released under the name FirePower, not "Hemi", in 1950 for the 1951 model year. The first version of the FirePower engine had a displacement of 331 cu in (5.4 L) and produced 180 bhp (134.2 kW). Eventually, each Chrysler divisions had its own versions of the FirePower engine, with different displacements and designations, and having almost no parts in common. Chrysler and Imperial called their versions the FirePower. DeSoto called theirs the FireDome.
Although all manufacturers were familiar with multi-valve engines and hemispherical combustion chambers, adding more valves per cylinder, or designing the complex valve train needed for a hemispherical chamber, were expensive ways of improving the high-RPM breathing of production vehicles. By canting the angle of the NASCAR-mandated two valves per cylinder, significantly larger valves could be used. The Chrysler hemi had an oversquare 4.25inches bore and 3.75 in (95.3 mm) stroke as did the wedge-chambered big-block Chrysler RB.
The Hemi was on the Ward's 10 Best Engines list for 2003 through 2007, and again in 2009.
At the 2012 North American International Auto Show in Detroit, Dodge debuted a Mopar Customized Dodge Charger "Redline" which featured a modern 426-cubic-inch (7.0L) HEMI V8 motor rated 590 hp.
Knapp 600 PS ,der LS7 hat nur 512 Din PS.
820 Ford HEMI(13,437 LIter) Hubraum.
https://www.jonkaaseracingengines.com/pr...-hemi.html
The Preferred Choice of IHRA Pro Stock World Champions.
Warum baut man die Hemi Köpfe auf einen Ford Block das wird schon seinen Grund haben denke ich mal.
Problem der hemi Köpfe ist eigentlich hauptsächlich ihre Größe wobei sie nicht viel größer sind als ein 16 Ventil Kopf.
Aber auch hier sind grenzen soweit ich weiß passt kein LT5 in eine C5.
Auch wenn ich ihn swchon im Motorraum einen MB 124 gehen habe, aber den gibt es ja auch mit 5 Liter 32 V, als 500E, ist das erste Auto was ich fahren durfte mit ein wenig mehr Bums in meiner Lehrzeit da war ich gerade 18 alt.
War das Auto vom Pizza Wagner Chef, dannach wußte ich Hups es wäre doch möglich ein Auto zu bauen das ähnlich beschleunigt wie ein Motorrad.
Gruß Mario
"Wenn du nur ein begrenztes Budget hast und mit diesem Geld ein Auto schnell machen willst,dann fang bei den Reifen an und hör beim Motor auf"(Harald Demuth)