Hemi engine sound

Hi I just recently bought a dodge charger with the 5. There a sound in the engine that I didn't hear while test driving the car. I heard that hemis have a ticking sound mostly at idling.

hemi engine sound

My makes a ticking sound when idling but it makes a loud clicking sound while driving which to me sounds like a beat up Honda civic or something that has a 4 banger engine instead of a v8. The car only has on it. If not what the cause and how much it cost to fix it? ChaSyn answered 5 years ago. Hello, I suggest that you have the engine diagnosed.

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This tick could be the single push rod could be faulty or a piston failure. Both a major damage theme. If you have a third party warranty, They will not pay if their rules are not followed. And you need to call them and find out what the rules are. Do not assume the reasonable thing to do is their correct way to proceed with a problem. Believe me, I learned the hard way. If you do have a third party warranty get on the phone now and ask any question of every situation you could think of for what will be covered.

Do not rely on Dealer or manufacturer steps to follow.

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So, again have it checked. Be proactive, or you may eat the repair cost. That is the way my issue started. It was a Hemi as well. Warranty co refused to pay.

The Reason is What a break down means to them only. The problem found to have been in vehicle when we purchased it. Do not wait for any maintenance issues to escalate. FYI: Just because your car is running now does not mean there is nothing to worry about. Caveat emptor. First i would like to ask, how long you have you had the car? And Chasyn,is right,have it checked now,not later, win there is a hole in that hemi block,from a loose rod.

Adam answered 5 years ago. I think it been about three weeks.If you like cars, then you have probably heard of the HEMI engine. If you were born in the s or before, you remember the phenomenon created by Chrysler's HEMI engines in the s, '60s and '70s. If you follow muscle cars or drag racing, you know that the HEMI engine is a popular engine because of its performance. But even if you know little or nothing about cars and enginesthe word "HEMI" might still mean something to you.

The word has become a synonym for big, powerful engines. These days, horsepower sounds like nothing. But inhorsepower was unheard of. It was an amazing amount of power for the day, and it fueled the "HEMI legend. Chrysler continued improving the HEMI design, releasing a cubic-inch design ina cubic-inch design inand ultimately a cubic-inch 7-liter version in The street HEMI came out inproducing horsepower.

The block and heads are still available today from Dodge. The HEMI is a popular power plant for drag racing, funny cars and muscle cars. How Gas Compression-ignition Engines Work. Did cars ever have external combustion engines? See more car engine pictures.Welcome to Virtual Transportation Center. Please login or sign up. Entire forum This topic This board Members. April 19,am. Mobile Main Menu. A HEMI?? Started by bankbillz, October 04,pm 0 Members and 1 Guest are viewing this topic.

What engine should I do next? Some sort of Dodge Engine? Go Down Pages 1 2. This will be updated as much as possible, including future additions of horns, door lever, and door opening sounds including things requesting by the community.

I hope to keep this post as altruistic as possible. So please comment! In real life, this would probably overheat and blow up simply because its a stock Hemi being pushed too hard. But in game, its a 10 ton Scat Pack! Download 2.

Proceed to copy or cut the contents of the download and paste into directory of step 2. Since the NABI Who has taken over the OMSI community? Content creators or the spoiled brats? Next step - posts! Haven't tested it yet, but good work. Furious typing, many cups of tea, and lots of OMSI.

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Nothin' better than that. Thanks bud.

Hemispherical combustion chamber

The kneeling is a bit de-synchronized especially for lower FPS instances. I have several requests. If these are things no one else will make, Ill make an attempt at the diesel variants, then do the hybrids. I have a lot of these sounds and I can most likely swap the transmission off of another mod with proper credits to the author. In summary, I'll do these, however it make take some time.

Which would you like me to do first out of the diesel non-CVT transmission powertrains? The first one will be the Series 50 With Voith transmission.The Chrysler Hemi enginesknown by the trademark Hemiare a series of I6 and V8 gasoline engines built by Chrysler with hemispherical combustion chambers. Three different types of Hemi engines have been built by Chrysler for automobiles: the first known as the Chrysler FirePower engine from to[1] the second from toand the third beginning in Although Chrysler is most identified with the use of "Hemi" as a marketing term, many other auto manufacturers have incorporated similar designs.

During the s and s, Chrysler also used the Hemi name for their Australian-made Hemi-6 Engine and applied it to the 4-cylinder Mitsubishi 2. A hemispherical cylinder head "hemi-head" gives an efficient combustion chamber with an excellent surface-to-volume ratio, with minimal heat loss to the head, and allows for two large valves. However, a hemi-head allows no more than two valves per cylinder, and these large valves are necessarily heavier than in a multi-valve engine.

The intake and exhaust valves lie on opposite sides of the chamber and necessitate a " cross-flow " head design. Since the combustion chamber is a partial hemisphere, a flat-topped piston would yield too low a compression ratio unless a very long stroke is used, so to attain desired compression ratio the piston crown is domed to protrude into the head at top dead center, resulting in a combustion chamber in the shape of the thick peel of half an orange.

The hemi-head design places the spark plug at or near the center of the chamber to promote a strong flame front. However, if the hemi-head hemisphere is of equal diameter to the piston, there is minimal squish for proper turbulence to mix fuel and air thoroughly.

Thus, hemi-heads, because of their lack of squish, are more sensitive to fuel octane rating ; a given compression ratio will require a higher octane rating to avoid pre- detonation in a hemi engine than in some conventional engine designs such as the wedge and bathtub.

The hemi head always 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 single overhead cam engines dual overhead cam engines may not have rocker arms.

This adds to the overall width of the engine, limiting the vehicles in which it can be installed. Significant challenges in the commercialization of engine designs utilizing hemispherical chambers revolved around the valve actuation, specifically how to make it effective, efficient, and reliable at an acceptable cost. Chrysler developed their first experimental hemi engine for the Republic P Thunderbolt fighter aircraft. However, the exercise gave Chrysler engineers valuable research and development experience with two-valve hemi combustion chamber dynamics and parameters.

Chrysler applied their military experience with the hemispherical combustion chamber to their first overhead-valve V8 enginereleased under the name FirePowernot "Hemi," in for the model year. Eventually, three of the four Chrysler divisions had its own versions of the FirePower engine, with different displacements and designations, and having almost no parts in common. This lack of commonality was due in part to the three engine versions using different bore pitches the center-to-center distance between adjacent cylinders.

Chrysler and Imperial called their versions the FirePower. DeSoto called theirs the FireDome. Dodge had a smaller version, known as the Red Ram. Only Plymouth didn't have a version, instead retaining the Dodge poly-head engines : there was no Plymouth hemi engine until the Briggs Cunningham used the Chrysler version in some of his race cars for international motor sports. A Chrysler-powered Cunningham C5-R won its class in Cunningham switched away from these designs in when Chrysler temporarily abandoned the hemispherical concept in favor of the wedge-head B engine until Collectively, the '58 Hemi engines are now commonly referred to as first-generation Hemi engines, [3] and the group can be identified by the rear-mounted distributor and the spark plugs in a row down the center of wide valve covers.A hemispherical combustion chamber is a type of combustion chamber in a reciprocating internal combustion engine with a domed cylinder head.

An engine featuring this type of hemispherical chamber is known as a hemi engine. Hemispherical combustion chambers were introduced on some of the earliest automotive engines, shortly after proving the concept of internal combustion engines themselves.

Hemispherical cylinder heads have been used since at least ; [1] they were used by the Belgian car maker Pipe in [2] and the Fiat HP Grand Prix racer. Stutzbeginning inused four-valve engines, [4] conceptually anticipating modern car engines. A hemispherical head "hemi-head" gives an efficient combustion chamber with minimal heat loss to the head, and allows for two large valves. However, a hemi-head usually allows no more than two valves per cylinder due to the difficulty in arranging the valve gear for four valves at diverging angles, and these large valves are necessarily heavier than those in a multi-valve engine of similar valve area, as well as generally requiring more valve lift.

The intake and exhaust valves lie on opposite sides of the chamber and necessitate a " cross-flow " head design. Since the combustion chamber is virtually a hemisphere, a flat-topped piston yields a lower compression ratio unless a smaller chamber is utilized. Significant challenges in the commercialization of engines utilizing hemispherical chambers revolved around the design of the valve actuation, and how to make it effective, efficient, and reliable at an acceptable cost.

Although a wedge-head design offers simplified valve actuation, it usually does so by placing the valves side by side within the chamber, with parallel stem axes. This can restrict the flow of the intake and exhaust into and out of the chamber by limiting the diameters of valve heads to total no more than the bore of the cylinder in a two valve per cylinder arrangement.

With a hemispherical chamber with splayed valve stem angle, this limitation is increased by the angle, making the total valve diameter size possible to exceed the bore size within an overhead valve configuration. See IOE engine for another method. Engineers have learned that while increasing the valve size with straighter port is beneficial for increasing the maximum power at high rpm, it slows the intake flow speed, not providing the best combustion event for emissions, efficiency, or power in the normal rpm range.

Domed pistons are commonly used to maintain a higher mechanical compression ratio, which tend to increase the flame propagation distance, being also detrimental to efficient combustion, unless the number of spark plugs per cylinder is increased.

Flame temperatures are very high, leading to excessive NOx output which may require exhaust gas recirculation and other emission control measures to meet modern standards.

hemi engine sound

These had pushed the hemi head out of favor in the modern era, until Chrysler's redesign that has proven popular. SOHC Cutaway showing cross-flow design, hemispherical shape of the chamber, center position of the overhead cam with flanking supports for the rocker shafts.

The hemi engine requires parts of more complexity and quantities. Upper photos of double rocker system for a pair of Hemi heads and its complex piston casting.

Lower photos of comparable parts for a pair of Wedge Heads. A major drawback of the hemi design is evident here— Large head castings relative to overall engine size. The splayed valves necessary for the crossflow head require a wider casting, which requires large engine bays. Engineers are looking to shrink and reduce the size of vehicles and the engines that power them. Alfa Romeo has produced successful hemi-head engines throughout the years.

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Arguably one of their most beloved examples is Giuseppe Busso 's original 2. Each cam controlled one set of valves, either a bank of intake valves or a bank of exhaust valves.

Why do Mopar Engines Have a Different Sound From Chevys and Fords??

The Aston Martin V8 5. Perhaps the most widely known proponent of the hemispherical chamber design is the Chrysler Corporation.There are many different parts of an engine's design that control the amount of power you can extract from each combustion stroke.

For example:. The last item in the above list is one of the key advantages of the HEMI head versus the flathead engine. Surface area causes heat loss. Fuel that is near the head walls may be so cool that it does not burn efficiently. With a flat head, the amount of surface area relative to volume of the combustion chamber is large.

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In a HEMI engine, the surface area is much smaller than in a flat head, so less heat escapes and peak pressure can be higher. Another factor with a HEMI head is the size of the valves. Since the valves are on opposite sides of the head, there is more room for valves. The engine design that preceded the HEMI was a wedge-shaped combustion chamber with the valves in line with each other.

The inline arrangement limited valve size. In a HEMI engine, valves can be large so the airflow through the engine is improved. If HEMI engines have all these advantages, why aren't all engines using hemispherical heads? It's because there are even better configurations available today.

One thing that a hemispherical head will never have is four valves per cylinder. The valve angles would be so crazy that the head would be nearly impossible to design. Having only two valves per cylinder is not an issue in drag racing or NASCAR because racing engines are limited to two valves per cylinder in these categories. But on the street, four slightly smaller valves let an engine breathe easier than two large valves.

Modern engines use a pentroof design to accommodate four valves. Another reason most high-performance engines no longer use a HEMI design is the desire to create a smaller combustion chamber. Small chambers further reduce the heat lost during combustion, and also shorten the distance the flame front must travel during combustion.

The compact pentroof design is helpful here, as well. How Gas Compression-ignition Engines Work. Did cars ever have external combustion engines? Prev NEXT. You want to burn all of the gas in the cylinder. If the design leaves any of the gas unburned, that is untapped energy. You want the maximum cylinder pressure to occur when the crankshaft is at the right angle, so that you extract all of the energy from the pressure.

How HEMI Engines Work

You want to waste as little of the engine's energy as possible sucking air and fuel into the combustion chamber and pushing exhaust out. You want to lose as little heat as possible to the heads and the cylinder walls. Heat is one of the things creating pressure in the cylinder, so lost heat means lower peak pressures.The Chrysler hemi performance engines are notorious for making slight tapping or ticking noises.

Tapping and ticking noises can be caused by various problems in the motor, however these noises are most likely caused by a lack of lubrication, and may be a sign of a more significant problem. If your hemi has begun making a ticking noise or the noise has increased, you should take the vehicle to a certified professional mechanic so that the cause of the ticking can be professionally diagnosed and repaired.

Ticking sounds in an engine are commonly caused by a lack of lubrication. Lubricants such as oil and fuel flow between metallic components and provide cushioning so that the parts do not tap against one another.

Ticking or tapping noises can come from several different sources, including the lifters, valves and fuel injectors. One of the most common causes of the hemi tick is a problem with the lifters. There has been much speculation about what causes the lifters to tap on some hemis, especially the 5.

If your hemi has lifters tapping, it is important to check the amount of engine oil and make sure you are using the right type of oil for the vehicle. Low engine oil can cause a lifter to tap and can cause permanent damage. Low quality fuel can cause the hemi tick. Fuels that contain high amounts of ethanol or that are low octane may not properly lubricate the fuel injectors and can lead to a slight tapping or ticking noise. Low-octane gas has also been known to cause an ignition knock in high-performance engines.

Using fuel additives or a high quality gasoline can help prevent this from occurring and may be able to correct or minimize a hemi tick. The intake and exhaust valves on the hemi may also be causing the ticking sound you are hearing.

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Valve tapping can be caused by several different problems, including a lack of lubricant or a problem in the springs that close and open the valves. Valve problems should be examined by a mechanic to determine the precise cause and possible solutions. This article was written by the It Still Works team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information. To submit your questions or ideas, or to simply learn more about It Still Works, contact us.

hemi engine sound

Fuel Low quality fuel can cause the hemi tick. Valves The intake and exhaust valves on the hemi may also be causing the ticking sound you are hearing.

About the Author This article was written by the It Still Works team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information.


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