How to identify the original and auxiliary cylinder heads of the car 100

The cylinder head, determined by the original factory, the auxiliary factory, usually compared with the original cylinder gasket, the water hole on the top, the oil circuit hole and the cylinder gasket are completely consistent, the inner wall is smooth, the hole has no rough edges, it is slightly heavier than the auxiliary factory, and the section surface of the contact with the cylinder gasket is smooth, but not too smooth, and there are traces of the lathe. You can compare the new one with the old one, the letter font, the hole position, the size, the general same, is the original.

The lower surface is very smooth, the weight is relatively light, the edge of the hole is not smooth, and the inner wall of the hole is rough, especially the hole hole.

The original crankshaft has delicate workmanship, round oil channel holes, smooth inner walls, and dynamic balance of opening depth. Location. Exactly the same as the one replaced, no trachoma, grinding marks, etc.

The letters on the crankshaft are clear, which is exactly the same as the font that has been replaced, and the new crankshaft is zero, so there is no need to grind the shaft, use a micrometer to measure the data and measure the roundness.

The workmanship of the auxiliary factory is relatively rough, the inner wall of the oil circuit hole is more concave and convex, the position of the dynamic balance hole deviates, there are more holes than the original factory, there are the same number, and the brightness is not enough. The letters on the crankshaft are not equal to the font of the letters that are replaced, and even the journal is out of round.

For general auto parts, it is necessary to look at the original factory mark of the outer packaging that has not been opened, but for the aluminum alloy (cylinder head) such as cylinder head and crankshaft and high-strength and high-precision tool steel (crankshaft) products like you said, we must not only look at the outer marking, but also look at the surface finish, trachoma size, contrast outer diameter, inner diameter and accurate size of key parts. The cylinder head can be seen by the original cylinder gasket to the eyelet and the appearance of the surface, but the crankshaft must measure the outer diameter.

Packaging is the best carrier to identify genuine accessories, and manufacturers are also promoting and introducing (similar to the propaganda instructions for identifying counterfeit money to the bank - please pay attention to collect it)!

The quality of the original and auxiliary factories can be seen from their quality!

Summary. Hello, 1, the difference between the original factory and the analogue, this is a comparison of the work, the sub-factory does the work fineness is poor, and there is no certificate, the original factory is a certificate, and the model is marked on the top, 2, the original, the analogue's ** difference is very large, at least the difference is more than 600, 3, the cylinder head is best the original, reliable quality, so as not to have a bad quality of the cylinder head itself, oil leakage, water leakage.

Hello, I am helping you sort out the answer to the question, please wait a while Hello, 1, the difference between the original factory and the auxiliary factory cylinder head, this is a comparison of the work, the deputy factory does the work fine, and there is no certificate, the original factory is a certificate, Qingju and the model is marked on the above, 2, the original factory, the deputy factory ** difference is very large, at least the difference is more than 600, 3, the cylinder head is best the original, reliable quality, so as not to let the cylinder head itself the difference in the amount of loose Tan's is not good, oil leakage, water leakage.

Summary. Hello, 1, the difference between the original factory and the analogue, this is a comparison of the work, the sub-factory does the work fineness is poor, and there is no certificate, the original factory is a certificate, and the model is marked on the top, 2, the original, the analogue's ** difference is very large, at least the difference is more than 600, 3, the cylinder head is best the original, reliable quality, so as not to have a bad quality of the cylinder head itself, oil leakage, water leakage.

Hello, 1, the difference between the original factory and the auxiliary factory cylinder head, this is a comparison of the work, the vice factory does the work fineness is poor, and there is no certificate, the original factory is a certificate, Qingju and the model is marked on the top, 2, the original factory, the vice factory ** difference is very large, at least the difference is more than 600, 3, the cylinder head is the best original factory, reliable quality, lest the cylinder head itself let the difference in the amount of Tan's is not good, oil leakage, water leakage.

1. Check the welding place: the welding point of the cylinder head of the genuine factory is generally more regular, while the welding point of the cylinder head of the auxiliary factory is more chaotic; 2. Check the surface polishing: there is a good polishing effect on the surface of the cylinder head of Zhengqing Tuanbei factory, while the surface polishing of the cylinder head of the auxiliary factory is generally not relatively smooth; 3. Check the inkjet code:

The genuine cylinder head will have a code, while the analogues or suspected cylinder heads will generally not have a code; 4. Check the dimensions: the dimensions of the genuine cylinder head are generally more regular, while the dimensions of the auxiliary cylinder head are more chaotic; 5. Check the internal structure: the internal structure of the cylinder head of the genuine factory will be more complicated, and the internal structure of the cylinder head of the auxiliary factory is relatively simple; 6. Check the weight:

The weight of the genuine cylinder head will be heavier, while the weight of the auxiliary cylinder head will be lighter; 7. Check**: The genuine cylinder head will be relatively high, while the auxiliary cylinder head will be lower; 8. Check the material: the genuine cylinder head generally uses high-quality materials, while the material used in the auxiliary cylinder head is generally poor.

Is there still any doubt about kissing?

1. Look at the color and thickness of the silicone sleeve, and smell whether there is a pungent smell. 2. Whether the opening and the opening seepage sail (the place connected to the right handle) are engraved with serial numbers. 3. Outer packaging font printing.

The hood is made of rubber foam and aluminum foil to reduce engine noise while isolating the heat generated during engine operation.

Effectively protect the clump hail paint on the surface of the hood to prevent aging. For high-speed moving objects in the air, the air resistance and turbulence generated by the airflow around the moving object will directly affect the movement trajectory and movement speed, and the flow direction of the air relative to the car and the obstructive force generated by the car can be effectively adjusted through the shape of the hood, so as to reduce the impact of the airflow on the car.

Through diversion, the air resistance can be broken down into beneficial force, which improves the force of the front tire on the ground, which is conducive to the driving stability of the car. The sleek hood exterior is basically designed according to this principle. The hood can protect the engine and surrounding pipeline fittings, etc.

Under the hood, there are important components of the car, including the engine, circuits, oil circuits, brake system and transmission system.

The key to the car. By improving the strength and structure of the hood, it can fully prevent adverse effects such as impact, corrosion, rain, and static interference, and fully ensure the normal operation of the vehicle. (Photo by photo:.)

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1.Look at the color and thickness of the silicone sleeve to see if there is a pungent smell. 2.

Is the serial number engraved on the opening and opening (where the right handle is attached)? 3.Outer packaging font printing.

The hood is made of rubber foam and aluminum foil, which reduces the noise of the engine and isolates the heat generated when the engine is working.

Effectively protect the surface paint of the hood from aging. For objects moving at high speed in the air air, the air resistance and turbulence generated by the air flow around the air moving object will directly affect the trajectory and speed, and the flow direction of the air relative to the car and the blocking force of the car can be effectively adjusted through the shape of the hood to reduce the impact of the air flow on the car.

Through diversion, the air resistance can be broken down into beneficial forces, which can increase the force of the front tire on the ground and help the vehicle ride smoothly. The appearance of the streamlined hood is basically designed according to this principle. The hood protects the engine and surrounding pipe fittings, etc.

Under the hood, it is an important part of the car, including the engine, circuits, oil circuits, braking system and transmission system.

Keys to the car. By improving the strength and structure of the hood, it can fully prevent adverse effects such as impact, corrosion, rain, and electrostatic interference, and fully ensure the normal operation of the vehicle.

Millions of car purchase subsidies.

The engine cylinder head is used to seal the cylinder and form the combustion chamber. Side-mounted valve engine cylinder head, cast water jacket, water inlet hole, water outlet hole, spark plug hole, bolt hole, combustion chamber, etc. Overhead valve engine cylinder head, in addition to the cooling water jacket, there are valve devices, intake and exhaust channels, etc.;

cylinder head function;

The cylinder head belongs to the valve mechanism in the internal combustion engine, which is mainly used to close the upper part of the cylinder and form the combustion chamber. It is also used as a support for the camshaft and rocker shaft, as well as the intake and exhaust pipes. The main purpose is to suck the air into the cylinder, and the spark plug ignites the combustible mixture, drives the piston to do work, and the exhaust gas is discharged from the exhaust pipe;

common faults; Generally, the valve clearance is too large or too small, resulting in abnormal valve noise; There is also the failure of the camshaft position sensor on the cylinder head, but this is rarely the case, and it is usually a valve failure. There is also a relatively large fault is that the oil and water are mixed, and this situation is generally due to the penetration of the joint surface of the cylinder head and the cylinder;

scratches, or the cylinder gasket is not tightly sealed. In this case, the engine needs to be dismantled.

Cylinder head is a part of the engine body, which is a valve mechanism installed above the cylinder block.

The term cover is more vague, it may refer to the engine decorative cover, that is, the plastic plate covered on the engine, which is printed with the manufacturer's logo and applied technology, etc., which belongs to the installation of X parts, many economic cars are not installed, there is a certain sound insulation effect, mainly decorative.

The hood is the one on the outside that you can see, and the cylinder head is on top of the engine.

The chassis cover is combined with the shape of the car, and the shape color follows the color of the car body.

The canopy is a kind of intended decoration (as we call it here) that covers the engine

The cylinder head is a part of the engine, and the air seal above the cylinder exhausts the intake ignition and other functions.

The canopy is the cover on the front of the windshield. The cylinder head is the upper part of the engine.

The general order is from bottom to top, crankcase, cylinder block, cylinder head, cylinder head cover, engine guard.

The place where the valve is installed is the cylinder head!

There are three understandings of the lid of the machine You should know what it said.

And then there's the plastic cover on the engine, which is also the cabin cover.

The last one is.

It should be said that it is the hood.