You may have heard the phrase going around using HEMI engines in advertisements such as TV commercials, which were very popular in the 1950s to 70s. There was a very popular advertisement for the Chrysler HEMI engines used.

To go any further, we need to understand what HEMI is. HEMI is a type of combustion engine, and as it is cylindrical in shape, it was given the name HEMI, which is short for “hemisphere.” It was first used for passenger cars.

Where did HEMI come from?

These are some of the earliest automotive engines and came very quickly as the concept of internal combustion engines was introduced. They were used by the Belgian car makers at first and were a part of the automotive tools used in car racing tournaments, such as the Grand Prix, where it was used in the Fiat 130 HP in 1907. It was then again used in 1914 and 1917 and later became part of Toyota’s V8 engine, which was the first ever V8 engine introduced by Toyota.

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The first proper HEMI engine was used in 1948 by Harry Westlake, who developed a HEMI 6-cylinder engine for Jaguar. Later, the 180-horsepower HEMI engine was introduced. Now, the 180 horsepower may seem less popular nowadays, but it was a very big deal in the 1950’s. After this, the HEMI engine was developed very quickly, and in 1965, an engine with 425 horsepower was introduced.

What kind of Technology is Used?

The reason why the shape of the hemisphere was used was due to the increase in the efficiency of the combustion engine and also the prevention of heat from the chambers. Also, the head allows the presence of 2 chambers, as traditionally only one was used.

The technology used in this is the crossflow head design, where the intake valve is situated on one side, and the exhaust valve is situated on the opposite side.

The cylindrical head is domed at the top to get a suitable compression ratio at the piston crown. Getting a suitable compression ratio is very important, as it is one of the most important components of the engine, and the functionality of the car depends on it.

How does it Work?

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The most important thing about the HEMI engine is its combustion engine, which is the main reason for its high efficiency. The chambers are the reason that the HEMI engines can produce so much power. The main power lies in the head of the cylinder where the spark plug is located.

The main problem the flat head design had was the reduced thermal efficiency. This problem is eliminated completely by the hemispherical design. The presence of a camshaft, which is situated directly behind the valves, puts pressure on the valves, which makes the need for pushrods and rocker arms unnecessary.

The chambers located in a HEMI engine are made up of very strong metals, and when the engine is fired up, the space between the two chambers fills with high power of gasoline combustion and gives you its topmost power.

The modern Hemi engine is different than the original design, but the principles are similar. Make an engine that can produce a lot of power and reduce the loss of heat. 

The design of the HEMI engine is such that when the fuel enters the engine, it reaches the combustion chamber with the spark plug related at the top. When the combustion process continues, the valves allow the proper intake and exhaust of the airflow.

The piston located directly beside the valve helps to let the particles move efficiently. In this way, the thermal efficiency and the volumetric efficiency are improved by using a HEMI engine, and you can get more power compared to the flathead design.

To get the best out of your engines, make a list of auto parts, which will give you a clearer view of finding the most compatible parts for your car. Never compromise on the quality of the engine oil and choose the best diesel engine oil for your car, as this oil can improve the age of your car and keep it like it’s brand new.

What is the Difference between a HEMI Engine and a Standard V8 Engine?

Firstly, the hemispherical shape of the HEMI engine gives better thermal efficiency and also helps in the airflow intake due to the large storage size, whereas a standard V8 engine failed to complete this requirement due to the less airflow intake, resulting in low efficiency.

Secondly, the HEMI engine features chambers that are located side by side, which allows easy access to the gases for intake and exhaust, whereas the standard V8 engine uses side-by-side chambers, which limits this possibility.

Thirdly, the spark plug location, which is inside the chamber, gives an advantage to the combustion process and helps maximize ignition as much as possible. There are certain benefits and drawbacks to having an HEMI engine. They are:

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Pros:

• Surface area: it is a well-established fact that spherical objects tend to have lower surface areas. Having hemispherical heads reduces the imbalance in the temperature of the fuel. The heads help in the fast loss of heat, which is good for the engine. Overheating of an engine is a very common problem, which can cause permanent damage to the engine if not treated in time. Having an HEMI engine eliminates the problem and helps in stabilizing the temperature.
• More room for valves: The main issue that the preceding engine makers faced was the space problem to fit the valves, which resulted in the engine’s low efficiency. This problem was solved by the HEMI engine makers, as they improved the size of the valves and also allowed more room between them, which made the airflow system efficient.
• Better angle: The HEMI engines have an extra angle, as the total diameter of the valve is increased, which exceeds the bore size due to the configuration of the overhead valve. The earlier models had chambers placed side by side, which restricted the airflow. This limitation was eliminated by the use of HEMI chambers, as they provided enough room.

Cons:

• Heavy valves: we can’t dispute the better positioning of the valves and the spark plugs in a HEMI engine, but the valves do serve a drawback of being very heavy. Due to the increased weight of the valves, it requires a higher amount of power to operate, and that, in turn, increases the cost of the engine.
• Oversized combustion chamber: the reason that HEMI engines are used in powerful vehicles and muscle cars is due to the massive size of the combustion chambers, which requires large engine space; as a result, they are only compatible with racer cars. Streetcars do not have the capacity to accommodate such engines, and therefore, the use of these is limited to only certain types of cars.

HEMI engines were no doubt one of the best technologies to come out for car engines. It provided the basic foundation of the many car engines which we use today. The original HEMI engines are now hard to find, as the developers have modified them to a more efficient and compact design. Still, the legacy of the HEMI engine continues.

Motor oil is among the very popular topics to discuss. Modern oils and engines are engineered for proper emission, good fuel economy, and long engine life requirements. Car owners should know everything about the utility of motor oils, as it helps you decide which oil is better for your vehicle.

Here, we are going to discuss the differences between synthetic and mineral oil. You are advised to use mineral oil when your vehicle is new, and you need to use synthetic oil when it has completed a considerable number of kilometers.

Synthetic oil has become the first choice for many car owners, and they used to prefer to use it for their car engines. Mineral oil is also in demand, but the demand for synthetic oil has suddenly increased in the last few years.

There are many reasons for its increased use, but you need to understand the basic difference between synthetic oil and mineral oil. There are various factors and points where synthetic oil wins, and in some, mineral oil wins. But we are here to discuss which oil would be beneficial to use for the engine. We have two options to use; now we need to decide which is better or which option you would choose.+

1. Origin of the Oil

The main difference between these two categories of oil is the way they are available for use.

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• Mineral oil is derived from petroleum, or I must say this is the liquid by-product of a distillate of petroleum.
• Synthetic oil is made in factories; this is not naturally derived. This is manufactured by using different chemicals. But it is more popular than mineral oil and widely used for car engines.

Synthetic oil has two further classes: semi-synthetic oil and fully synthetic oil. Semi-synthetic oil is made by converting natural oils into suitable base oils. This process is known as hydrocracking.

It is made up of the perfect blend of various chemicals. Fully synthetic oils are made up of group 1 base oils and blended with many additive packs to get the required viscosity for your car engine. You can look for Shell Rotella or Full Synthetic Oil for better performance of your car.

2. Cost of the Oil

Mineral oil is cheaper than synthetic oil. The high cost of synthetic oil is due to different chemicals used to make it. Synthetic oil is human-made, but still, car owners and mechanics prefer to use synthetic oil as it offers various benefits for engines.

3. Performance of the Oil

The performance of your car engine depends on the preferred oil for cars.

Synthetic oil provides more lubrication than mineral oil, and it is higher and better in performance than mineral oil. Synthetic oil is good to use for long drives, as it helps to create more friction without producing much heat.

You can have a smooth driving experience and enjoy your long drive by using synthetic oil for your car engines. It helps keep drivers comfortable for a long route. It offers the highest level of protection to the components of the engine.

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Mineral oil can lose its lubricating properties upon breaking down. Friction can increase, and the car can get damaged. If you drive the car for a long route and long time, friction will increase and the car parts can touch each other and cause car damage.

It becomes the main cause of increased heat, and mineral oil does not have the capability to resist high temperatures, as it cannot maintain its lubricating properties. But it does not happen in the case of synthetic oil, as it can withstand high heat and temperatures.

4. Longer Lasting

Every car owner looks for engine oil that lasts for longer. If you are also looking for it, you should choose synthetic oil over mineral oil. As we discussed above, it has heat-resistant properties and can withstand high temperatures. It has the capability to survive under high temperatures, heat, and friction.

• Synthetic oil does not lose the lubrication property and works for a long time. On the other hand, mineral oil loses its lubricating property and breaks down under high temperature, friction, and heat.
• You may have to change engine oil from time to time if you use mineral oil. But synthetic oil lasts much longer than mineral oil, and it is not often changed.

It is up to you how to choose best synthetic oil for cars.

5. Cost Effective

Synthetic oil is a little bit expensive than mineral oil, so those people who cannot afford it, they can look for mineral oil. Many people still prefer to use synthetic oil and consider it the better option regarding its cost.

That you need not change it often means you have to change it less than mineral oil. But the oil usage also depends on the car usage, so both options can be considered. If you are on long drives, then you should choose synthetic oil.

For those who are on short trips only, they can look for mineral oil as an affordable option. Both oils are used for car engines, but a few differences need to be considered in order to choose one of them for your car.

Basic Difference between Synthetic Oil and Mineral Oil

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Both oils are good to use. Synthetic oil is better in resistance power and performance than mineral oil. But if you are concerned about price, mineral oil would be a suitable and affordable option for you. So you better understand the differences well and choose the appropriate oil for your car engine.

Mineral oil is a fractional distillation product, while synthetic oil is a manmade product. We have mentioned all the benefits of using synthetic as well as mineral oil; you can read them out to decide the best oil for your car engine. I hope you like this post and make a comment if you have any queries about motor oils.

Are you looking for an easy way to find shorts in the car? Some people or car owners may find it difficult to find an electric short in their car, finding it can be a time consuming and tough process for them. However, by using some easy methods suggested by us, you can make this process simpler for you.

Are you sick of electrical problems in the Honda Civic? There are many easy techniques and tools that you can use to make this tedious and completed task much easier. One is using a test light, and the other is using a multimeter.

The short circuits are not always risky but may cause serious damage to the engine and its parts. One should take precautions to prevent any such incident. The short circuits in the car mostly occur when a hot wire touches any other wire in the Fuse box. Due to this, extra current flows through the circuit and causes it to break.

This is the most common reason for short circuits. However, there are many other reasons as well which are responsible for a short circuit to occur. A few of those reasons are:

• Defective plugs, switches, cords, and receptacles
• Faulty wiring
• Circuit overload
• Broken insulation

Everyone cannot deny the fact that short circuits can be very dangerous at times. It may cause wires to catch fire. The huge amount of heat generated due to the flow of excess current may cause an explosion.

It is necessary that one detects a short circuit at an early stage. However, it is preferable to follow proper safety measures to avoid such incidents. One should use good quality fuse and circuit breakers. The circuit breakers are deployed to break the circuit as soon as extra current flows through it. This is helpful in minimizing the damage and helps in identifying the location of the faulty circuit.

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Sometimes, even after using such equipment, it is hard to detect the location of a short circuit. In few cases where the wiring is a bit complicated, it is very hard to find the exact location of a short circuit. One should always be careful while looking out for the exact position of the fault. The main power supply should be switched while you are investigating or touching any other part close to it.

Most skilled mechanics can also take lots of time to trace short in your car. There may be several reasons behind short circuits; it may occur when the wiring becomes old, and sometimes it may happen if any particular part of your car deteriorates. A short circuit may occur in several parts of your car, but you should know how to find it. Here in this guide, we have mentioned some methods to find it and the process to fix it. These methods are easy to implement and make use of easily available tools. Moreover, the tools and equipment used in these methods are very affordable, too.

Find Short Circuits in Your Car by Using a Multimeter

This is a very easy method to find a short circuit in your car. To continue with this method, you will need few tools or equipment as below:

• Wrench
• New fuse
• Multimeter

Let us now see how the process goes. First of all, open the hood of the car and search for the battery. If the light is not proper, you might need a torch or a flashlight. Once you find the battery, you have to detach the cable from the negative end of the battery. You will require a wrench here. All you have to do is to grip the screw on the negative end of the battery with a wrench and rotate it anti-clockwise. This will loosen the screw, and you can easily detach the cable.

The next step will involve the use of a multimeter. Set the multimeter to display 10 Amps. You need to ensure that the multimeter stays in the same position. Now connect the positive of the multimeter to the negative of the battery and the negative of the multimeter to the positive of the battery.

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As soon as you make the connection, you should observe the reading of the multimeter. If it reads 0 or nil, then reduce the multimeter amps to 9 and check the multimeter reading again. If it again displays 0 or Nil, repeat the process by lowering the multimeter amps by 1.

That means you have to make multimeter amps to 8, then 7, 6, 5, and so on till you reach 0. If it displays 0 for all the values from 10 to 0, that means that there is no short circuit. But if the values draw in any case, then it indicates that there is a short circuit.

For example, if the multimeter amps are set to 4 and then the multimeter reading shows 0, it means that there is no short circuit, but if it shows 4, then it means that there is a short circuit. Once the short circuit is confirmed, you can then examine the fuse to determine the position of a short circuit.

Finding a Short in a Car with Test Light

This is another method which is used to detect the short circuit. This method is useful for 12 Volts vehicles. All you need to perform the test using this method is a Test Light. This tool is easily available and affordable as well.

Let us look at the steps involved in this method.

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• First of all, you need to test the light itself.
• To perform this test, you have to clamp the clip to the ground.
• To do this, you can use the negative terminal of the battery, or you can use any metal surface of the car.
• Now, touch the test light probe to the positive of the battery.
• You may also use the fuse for this purpose.
• If the light turns ON, it means that the test light is functioning properly.
• Now, we may proceed to test for a short circuit using a test
• You need to ground the test light properly to test the fuse condition.
• You need to touch the test light probe to both sides of the fuse.
• If it turns the test light ON, it means that the fuse is perfectly fine.
• Now, if you observe that power is not supplied to any of the parts, such as the brake light, then you should use a test light to find the fault.
• You should check the switch and the wiring using a Test. In this way, a properly grounded test light can be used to check the power supply to various parts, such as the Break light, cooling fan, fuel injector, etc.

These two methods will be very helpful in detecting the short circuit in your car. If you learn any of these, it will be great, as it may save your time and money. If you come across such problems, you will not have to roam around in search of a mechanic. Moreover, in case you get a mechanic, he will charge you a decent amount to detect the fuse and get it repaired.

The equipment such as a wrench, a multimeter, a test light, best spark plugs for BMW, are easily available and are affordable as well. You can also get this equipment online.