It is a system that aims to alter the opening and closing time of the air intake valves (or exhaust gases) so that the optimum amount of air for the process enters the cylinders. This is possible by a phaser located on the camshaft head called Variable Valve Timing (VVT) System.

Keep reading to find out in more detail how this system works and what it is made of.

Variable Valve Timing: Purpose and operation

As a rule, when more revolutions our engine has, more air is needed by cylinders. That’s where variable valve timing comes in. Its main function is to modify the phase angles of the distribution diagram, adjusting the camshaft according to the needs of the moment.

This VVT system is controlled by the ECU, the electronic control unit that regulates the engine and is responsible for activating this gear through the flow of engine oil.

Oil pressure is sent through the VVT gear to fill up cavities to advance or retard timing. Filling the VVT ​​gear with oil unlocks its stationary pin and makes it two independent rotating parts, causing angular displacement between the input (chain) and output (camshaft), advancing, or retarding the timing.

Keep reading: The different timing chain systems

To obtain the maximum efficiency of the engine, the valves must open and close depending on the revolutions per minute at which it is turning, and this is only possible if we have a variable timing.

There are different types of timing that have unique characteristics, the main difference being in the placement of the camshaft. Depending on the engine, VVT configurations are differentiated and can be run only on the intake valves or on both camshafts.

The two main ones, when it comes to varying the distribution, are:

1. Variation of the valve lift, varying the advance and closure of the valve at the same time.
2. Displacement of the camshaft with respect to the crankshaft.

Advantages of Variable Valve Timing (VVT)

Chain drives can transmit large loads on long and short distances. These systems allow to use the optimal opening and closing time of the valves in any engine situation. Therefore, the importance of the VVT lies in the fact that its proper use directly improves the performance of our vehicle’s engine, optimizes thermal management, and provides a better fuel economy.

The main benefits of this system include:

• Improved efficiency, increased torque, and power: The variable valve timing system allows higher RPM to be achieved, and consequently greater engine power.
• More precise engine timing: It allows minute and precise control of the internal valves (opening and closing) of the engine while driving, therefore it will also obtain an increased engine lifespan.

• Reduction of fuel consumption: Thanks to this effective management of the engine valves, the VVT allows a smoother idle offering better fuel consumption as well as lower carbon emissions.
• Better fuel economy: By having a greater direction and control of the gases, the system performs a recirculation that can reduce emissions.

Variable Valve Timing System: Main components

The main elements of a variable valve timing that come into action to obtain a variable synchronization are:

• ECU (Engine Control Unit)
• Sensors
• VVT Camshaft adjuster consisting of stator, rotor, vanes and locking element
• Camshafts
• Solenoid valves
• Oil
• Timing chain adjuster

Because of the importance of lubrication throughout the variable valve timing system, monitoring oil levels and condition will be essential to keeping all parts in top condition and getting the best possible engine performance. This action must be carried out in accordance with the vehicle manufacturer’s recommendations.

VVL / VVEL / VVTL: Main differences

VVL, VVEL, and VVTL are all abbreviations for technologies that involve altering the lift of engine valves for improved performance. VVL stands for “Variable Valve Lift”, VVEL stands for “Variable Valve Event and Lift”, and VVTL stands for “Variable Valve Timing and Lift.”

In particular, VVTL is an advanced supporting system that allows for precise control of valve lift. In modern engines, the VVL system is often combined with Variable Valve Timing (VVT) systems to achieve even greater performance improvements.

Moreover, various manufacturers utilize proprietary abbreviations for their Variable Valve Timing (VVT) systems, including:

Related content: Timing chain system: Frequently Asked Questions

Dolz: Solutions in Timing Chain Kits

Thanks to its almost 90 years of experience in the automotive aftermarket industry, Industrias Dolz offers the most competitive timing chain kits on the market, providing its customers with the best solutions with excellent quality, service, and innovation.

The manufacturing processes used in the kits and their different components only use selected materials, ensuring that all products always remain at the forefront of the market and stand out as the ‘top sales’ range among the European market offers.

Also, they include all the necessary components for a professional repair, that is all components are delivered in one package: timing chain, crank sprocket, cam sprocket, tensioner, guides, oil seal, VVT… all the necessary accessories depending on the vehicle application.

Don’t miss… Dolz Timing Chain Kit Unboxing Video

The main characteristics of our Timing Chain Kits are:

• All our components have been tested and are equivalent to OE.
• Always with the latest OE version, to guarantee an effective replacement and an efficient and durable chain drive.
• Easy-Fit Kits for a correct installation.
• Technical Bulletin if necessary.
• All our components are marked with our brand.
• A careful and innovative high-quality packaging
• Presence in TecAlliance electronic catalog (TecDoc).
• 2-year warranty from the date of purchase or 80,000 km.

Make sure to subscribe to our monthly newsletter to read more posts like this!

…yes we have!

La entrada Variable Valve Timing (VVT): How does it work? se publicó primero en Industrias Dolz.

Read on to find out everything you need to know about your timing chain system and how to replace it.

When and why replace a vehicle’s timing chain?

Timing chains, with their slimmer width, are more durable than timing belts, so they don’t require scheduled maintenance. While it is true that, over time, the timing chain can elongate, the chain tensioner may fail, or there may be other factors that lead to poor lubrication and deterioration of the timing chain.

How does a chain tensioner work? The chain tensioner is a crucial component that ensures the correct operation of the timing chain by maintaining proper tension. It uses hydraulic or spring-loaded pressure to prevent slack in the chain, avoiding premature wear or misalignment. A failing tensioner can lead to a loose or stretched chain, which might cause severe engine damage.

Timing chain problems are associated usually arise with high mileages. However, on some occasions, these tend to stretch or break over time. If a vehicle is exhibiting poor engine performance, it is having trouble to start, it is suffering from overheating, it is experiencing noises or vibration, or it is displaying a check engine light, it is most probable that you have to replace the timing chain immediately.

Keep reading: Timing chain replacement: when it’s necessary?

Things you need to replace a timing chain

Timing chain installation requires the right tools, a service manual specific to the engine’s model and a degree of mechanical know-how. Because it is a major job, the risk of performing it incorrectly could trigger irreversible consequences for the engine.

Timing chain kits are the safest way to ensure best timing chain installation practices. By replacing together all intrinsic components, timing chain replacement costs are significantly reduced while results are highly enhanced.

Installing a Timing Chain kit step by step

Step 1: Consult the owner’s manual

• First of all, locate the timing chain of the vehicle and verify the engine model, making sure that the timing system houses a timing chain rather than a timing belt.
• Rely on the owner’s manual to locate and identify the different engine parts and numbers, such as the firing order.

Step 2: Prepare the engine

• Make sure that the engine has cooled down and that it is no longer plugged in the batteries.
• If necessary, clean the engine with the use of the right degreaser and make sure that the workplace is adequate and that it offers safe conditions.
• Drain the vehicle’s oil and coolant and remove coolant hoses and other components that restrict access to the chain cover.

Step 3: Remove the timing chain cover

• Remove the timing chain cover by unbolting it from the engine block. When doing this, don’t neglect the bolts, they may each be different lengths, so you will need to know which bolt goes where on the cover.
• Remove the crankshaft pulley, loosen the camshaft sprocket, and then remove the chain tensioner. This will expose the guides, sprockets, and chain for a better access.

Step 4: Remove the timing chain

• Get the engine to top dead center and use a ratchet or wrench to remove the timing chain by sliding it off the gears.
• To do this, align the shiny links on the timing chain with the marks on the camshaft and crankshaft gears.

Step 5: Install the new timing chain

• Before installing the new chain, first of all install the guides and lubricate the gear by using a decent amount of gear oil. This will ensure that the timing chain system will perform smoothly in the future.
• Then place the new chain onto the gears while aligning it exactly with the marks previously referenced. Finish by tightening the chain according to the vehicle’s manual specifications. To do this you must have adjusted the cam sprocket.

You may like: Car Timing Chain System – Frequently Asked Questions (FAQ)

Step 6: Replace the oil seal

• This is the rubber seal around the crankshaft. Coat the seal with oil to ensure that it is compressed. This way you will make sure that it functions correctly.
• Proceed to reinstall the cover of the timing chain.

Step 7: Reassemble all components

• Start off by bolting on the harmonic balancer, then proceed to reinstall the rest of the engine components in the reverse order of removal.
• Once reassembled, make sure that the coolant is in perfect conditions before filling the radiator in.

Always refer to the owner’s manual for specifications.

Step 8: Review that everything is working properly

• Reconnect the car battery, start the engine and check that there is no leaking or dripping, and that the warning lights are all off.

Dolz kits: the most complete kits on the market

Industrias Dolz has developed a new range of timing chain kits that take timing chain replacement to a whole new level, being the most complete kits on the market incorporating: timing chain, crank sprocket, cam sprocket, tensioner, guides, oil seal, VVT, etc.

As a worldwide aftermarket supplier, Dolz only offers kits that meet all OE quality standards, including every component required for a professional and top tier repair.

Contact us to know more!

La entrada How to replace a timing chain kit: The ins and outs se publicó primero en Industrias Dolz.

+3 Water pumps

New part numbers for water pumps suitable for: Honda, Mercedes-Benz and Audi.

• DOLZ H265 (mechanical water pump); M670 (variable water pump)and EA572A (electric auxiliary water pump).
• GGT PA13275 (mechanical water pump); PA12957 (variable water pump)and PA13402 (electric auxiliary water pump).
  

Based on the extensive knowledge of our experts, at Dolz we have developed a range that is characterized by its reliability, efficiency, and ease of assembly. More than 1,300 water pumps that guarantee the main European and Asian brands coverage and strengthen our leadership position in the market. Therefore, you can be confident that we will have the parts you need when you need them.

+5 part numbers for Timing chain kits

New part numbers for Volkswagen Group, Nissan, Renault, Jaguar and Land Rover applications:

• DOLZ SKCR020; SKCN127; SKCA032V; SKCL028; SKCL029.
• GGT KCSPA020; KCSPA127; KCSPA032V; KCSPA028, KCSPA029.
  
  

Dolz Kits are characterized by their reliability, efficiency and easy-fit mode, being the most competitive timing chain kits on the market. Our complete range includes the Best-Selling references in Europe and includes all the necessary components delivered in one single package to guarantee a professional assembly.

+4 Timing belt kits

New timing belt kits with and without water pump suitable for: Volkswagen Group, Alfa Romeo, Jeep, Lancia and Fiat.

• DOLZ KD248 (with water pump); SKD248; KD301 (with water pump); SKD301.
• GGT KPA20248 (with water pump); KSPA248; KPA20301 (with water pump); KSPA301.

The quality of transmission components goes a long way in determining proper engine performance. That is why the kit format is a solution that guarantees the correct maintenance and synergy of the components and prolongs the useful life, durability, and performance of the entire transmission system. As you know, when replacing components, it is best practice to replace all the associated parts.

Dolz/GGT Kits are designed to provide the driver with the highest performance in any type of condition. We offer a full range that already exceeds 270 PN’s.

Download our latest part numbers! NTR Dolz/GGT september

Dolz, your safety choice since 1934

Industrias Dolz covers more than 90% of vehicle sales in the European market. Thanks to its more than 90 year of experience in the sector, and offers a complete range, providing its customers and partners with the best solutions, excellent quality, service and innovation.

Manufactured to be equivalent to OE quality specifications.

Certifies according to the Quality Management System (SGC) ISO 9001:2015, Dolz/GGT products are designed to cope with the parameters required by modern engine designers and feature OE equivalent components.

Would you like to be the first to receive the latest news about our products and highlights by email? Make sure to subscribe to our monthly newsletter to read more posts like this!

La entrada DOLZ/GGT New-To-Range: +12 new part numbers se publicó primero en Industrias Dolz.

R9M engine

The Energy dCi 130 engine is an engine that was developed by the consolidated work between Renault, Nissan, and Mercedes, on a 1.6 dCi version in 2011 as a result of the need for improvements on the predecessor 1.9 dCi engine.

With a variable geometry turbocharger or a high-pressure EGR valve, this engine, known as ‘R9M’, rapidly found its way into a wide range of applications, becoming the new popular engine thanks to its 130 HP and innovative technology.

Later, and after its good performance, were launched on new versions as 160 and 145HP.

The main improvement of this engine versus its predecessor, the 1.9 Dci, was the reduction on consumption and emissions.

Proof of this are the following examples:

• On the Renault Scenic the engine consumption is 4,5 l/100km whereas its predecessor on the 1.9 DCI was 5.4L.
• Regarding CO₂ emissions, the R9M data is 117g/km de CO₂ compared to 149g/km for 1.9 Dci.

How they manage to do so?

These improvements in fuel economy and emissions savings over other engines are achieved through four key factors in the configuration and design of this engine:

1. The concept of variable vane oil pump able to adjust the oil flow and pressure according to the engine needs.
2. Variable spiral air inlet admission that helps the engine to optimize the air/fuel mixture.
3. Optimized thermal management with an internal valve capable of managing the coolant through the engine just when is needed.
4. An EGR exhaust gas recirculation system. A low-pressure EGR valve directs exhaust gases through a filter before entering them back into the intake.

What can go wrong then? R9M engine issues

Previous Renault engines are known to have struggled on timing belt system, putting too much stress on the tensioner and even on the water pump bearing. The idea to use a timing chain kit was the best option, but this design presents a challenge.

The inlet an exhaust cams are connected through a cog gear mechanism, the teeth are no helicoidal as we can see in most recent Mercedes engines. Through the usage and on some occasions an incorrect maintenance, a clearance is generated between the gears.

This clearance generated noise and since the cam timing chain sprocket is mounted directly on top of one of the gears, the vibrations are transmitted to the timing chain kit mechanism. As result a premature wear between the sprocket and chain happens.

DOLZ Timing Chain Kit SKCR150

Dolz is proud of launching this kit which the reinforced material used on the sprocket and the latest version of the chain that will help our customer to keep driving more many years to come these iconic engines.

Thanks to the experience and its commitment, Dolz products have uncompromising quality, with the latest technological innovation and 100% tested.

Both part numbers are already available for workshops and distributors in the different electronic catalogs such as TecDoc and Sofinn.

If you require any further information, don’t hesitate to contact us as we’ll be glad to be of help.

La entrada Timing chain kit for R9M engine se publicó primero en Industrias Dolz.

With more than 80 part numbers, GGT timing chain kits cover the most popular applications of the European car parc coverage and include all the necessary replacement components in a single package for a complete and professional replacement since the first moment.

KCSPA001, the complete solution for the 1.3 Multijet engine

The timing kit contains not only those basic components such as the timing chain, the tensioner, the sprockets, or the guide rails, this also includes the oil seal, screws, flange, and the feed pipe, being the last two essential for a truly effective replacement since the beginning.

Let’s dig in the importance of these two pieces and the main benefits this GGT Kit offers over other references.

Engine Timing Chain Kit KCSPA001: Main Benefits

Piece 1. Flange

Following the OE design, we can see that its own exploded view for the chain kit already shows this part:

The main reason why it is necessary to replace it is because it wears out and therefore it generates “game” (too much clearance) as seen in the picture below:

What does this ‘game’ affect?

1. Mainly to the correct sealing when mounting the oil seal and to prevent leaks. As observed, despite the fact that the area is “clean”, it has lost the assembly tolerances, so its performance will not be ideal.
2. Having this ‘game’ directly affects to excessive vibration generation, which can further hasten failure (reduced useful life of the kit).

Piece 2. Feed pipe

The 1.3 Multijet engine is known for “suffering” lubrication problems, that’s why the chain has been improved by General Motors, being at this moment a chain with self-lubricated holes (same timing chain as GGT includes) and even an oil feed pipe had to be designed and included for a direct lubrication of this chain as shown in the following picture:

Basically, no matter how good the maintenance of the engine and its oil changes have been, there can always be impurities and contaminants that are usually placed in the smallest holes. These dirt particles, over time, affect the condition and operation of the pieces and can even block the oil galleries and the supply holes. To obtain the best result, a new feed pipe without impurities is always advisable to guarantee perfect lubrication and help prevent future problems. For that reason, GGT also supplies this piece as part of its timing chain kit suitable for 1.3 Multijet engine (Fiat, Alfa Romero, Ford & Opel).

This part is fully accessible during timing chain assembly and besides, does not increase labor time.

After all, why use the latest OE design chain on the market if it is not going to be lubricated as it needs?

Related content: Effective lubrication: a key factor of the chain

GGT: Precision for professionals

Make sure that the mating surfaces are as free from residue as possible. At Dolz/GGT we always remember that before replacing timing components, it is essential to prepare surfaces. That is the only way to make sure you will get a durable and quiet timing chain kit performance.

Now that we know some of the advantages of having these two pieces, let’s see other reasons why this GGT kit is one of the most competitive references on the market.

The main characteristics of our Timing Chain Kits are:

1. Easy-Fit Kits with all the necessary components for a professional repair. Always with the latest OE version.
2. All our components have been tested and are equivalent to OE.
3. 2-year warranty from the date of purchase or 80,000 km.

How we ensure competitiveness and quality of our kits?

• Hardness tests.
• Chain tensile strength tests.
• 3D Detection and Inspection – High Precision Measurement.

You will find Dolz kits in an extensive network of professional suppliers throughout Europe, all of them already available in the different electronic catalogs such as TecDoc and Sofinn.

La entrada Engine Timing Chain Kit KCSPA001: A Closer Look se publicó primero en Industrias Dolz.

Learn more about the crank sprocket, the main differences between this auto part and the cam sprocket and how to choose the right components.

What does a crank sprocket do?

A crank sprocket is a part of the timing chain in engines in charge of maintaining the timing between the crankshaft and the camshaft. 

Combined with the cam sprocket, they represent two crucial gears that, when operating in synchronicity, are able to keep crank and sprocket shafts running. As a consequence, they are able to generate adequate combustion and thus make the engine run smoothly.

Camshaft vs. crankshaft: what’s the difference?

These two shafts are linked to the timing chain by the crank sprocket and the cam sprocket, so that their rotations are at the same pace.

However, they present some differences: 

• The camshaft is located at the top of the engine, the crankshaft, at the bottom.
• They perform different operations. On the one hand, the camshaft is in charge of opening and closing intake and exhaust valves. In order to do so, it employs cams, which are lobes that push against the valves as the motion of pistons propels them. On the other hand, the crankshaft uses the movement of pistons (to which it is coupled) to power the engine by rotating.
• Regarding the respective sprockets, their sizes tend to vary. Typically, the crankshaft sprocket diameter will be twice bigger than the cam sprockets. This is because of the massive load on the crankshaft due to piston’s up and down movement.

Related: The different timing chain systems

How crank sprockets work

Crank sprockets are connected to crankshafts. The sprocket rotates using the movement of pistons (to which it is coupled) and, consequently, causes the shaft to rotate as well. It is able to transform linear energy into rotational energy, and consequently allows the crankshafts to power the timing chain that will later connect to the cam sprocket and camshaft. 

What causes crank sprockets to wear down?

Like a good many products in the timing, cam and crank sprockets will inevitably wear. Sprockets may lose teeth or present signs of wear because of continued use over time. This can cause timing chains to skip and, as a consequence, result in severe engine damage. 

It’s possible to notice potential crank sprocket issues: if knocking sounds are heard when the engine is running and accelerations are performed, it could be a sign of problems. A visual inspection might confirm or discard them.

Additionally, when picking the right crank sprockets, it’s important to ensure they are durable, sprockets that don’t present sharp teeth and whose keys fit perfectly.

Keep reading: The ins and outs of the timing chain: how to replace a timing chain kit

Dolz Timing Chain Kits, all components delivered in one package

The use of chain drives in today’s modern applications bears witness to the automotive industry’s continuous efforts for evolution and more precise technologies, less noise and longer transmission life being the most significant benefits of this advancement.

At Industrias Dolz, we are committed to provide high-quality automotive parts that ensure smooth-running efficient engines. As such, our timing chain kits include all components required for a professional repair, that is, all components delivered in one package: timing chain, crank sprocket, cam sprocket, tensioner, guides, oil seal, VVT…

DOLZ TIP: It is recommended to replace all timing elements in a single operation, ensuring an optimal coupling of the components and thus avoiding premature aging and possible future engine failure.

Made of high resistance steel and presenting a synergistic design with 100% tested robustness and reliability and quality OE equivalent, we guarantee the best solutions to match the automotive industry’s strive for innovation and quality.

Are you looking for the best solutions for the distribution of your vehicle?

Contact us to learn more about our full range of products!

La entrada The fundamental role of the crank sprocket in the timing chain se publicó primero en Industrias Dolz.

Based on the extensive knowledge of our experts, at Dolz we have developed a range of timing chain kits characterized by their reliability, efficiency, and easy-fit, being the most complete chain kits on the market.

Being able to obtain all the components in one package will help to carry out a more efficient replacement, in just one single operation and that will facilitate the perfect coupling of the elements.

The main characteristics of our Timing Chain Kits are:

• The most complete and competitive kits on the market.
• All our components have been tested and are equivalent to OE.
• Always with the latest OE version, to guarantee an effective replacement and an efficient and durable chain drive.
• Easy-Fit Kits with all the necessary components for a professional repair.
• Technical Bulletin if necessary.
• All our components are marked with our brand.
• A careful and innovative high-quality packaging
• 2-year warranty from the date of purchase or 80,000 km.

You will find Dolz kits in an extensive network of professional suppliers throughout Europe, all of them already available in the different electronic catalogs such as TecDoc and Sofinn.

Timing Chain Kit – New references 

Why choose Dolz?  

Once again at Dolz we combine the latest technology with coordinated planning and flexible production, which allows us to provide our customers with the best possible service and quality.

About Us

With almost 90-year history, Industrias Dolz is one of the most recognized manufacturers in the spare parts industry. As leaders in the manufacturing of water pumps, we also supply distribution kits and thermostats for the aftermarket. With innovative technologies, Industry 4.0, and in-house production, Dolz is a reliable supplier and manufacturer that has locations in more than 70 countries around the world and three factories in Spain (Castellón), Argentina (Buenos Aires) and China (Shouzou). 

Dolz Timing Chain Kit Unboxing

…yes we have!

La entrada Range Extension: 13 new references to Dolz Timing Chain Kits se publicó primero en Industrias Dolz.

References for BMW, AUDI, Seat, Škoda, Mini, Citroën, Peugeot, Ford or Hyundai offering high market coverage.

The full range of Dolz Timing Chain Kits is the Best-Selling references in Europe and includes all the necessary parts to guarantee its assembly, standing out for being the most complete kits on the market.

More and more cars are fitted with a timing chain. When purchasing a Chain Kit, it is essential to take into account the quality of the materials. For this reason, Dolz Kits have rigorous procedures that guarantee a quality OE equivalent, maintaining all its features for maximum precision and durability.

All Dolz products are available in the main electronic catalogs such as TecDoc and Sofinn.

New Part Numbers 

Why choose Dolz?  

About us

With almost 90-year history, Industrias Dolz is one of the most recognized manufacturers in the spare parts industry. As leaders in the manufacturing of water pumps, we also supply distribution kits and thermostats for the aftermarket. With innovative technologies, Industry 4.0, and in-house production, Dolz is a reliable supplier and manufacturer that has locations in more than 70 countries around the world and three factories in Spain (Castellón), Argentina (Buenos Aires) and China (Shouzou). 

…yes we have!

La entrada Dolz introduces 8 new references to its range of Timing Chain Kits se publicó primero en Industrias Dolz.

If the chain becomes damaged or even breaks and synchronization is lost, irreparable failures can occur in the vehicle’s engine.

In today’s article we focus on this component and another key factor of the timing chain that is often overlooked: its lubrication and the importance of its maintenance.

What types of chain are there?

The market tends to equip more and more engines with timing chain. In today’s car park, the most commonly types of chain used for transmission are: precision roller chain, bush chain and silent chain (with inverted teeth), all of them are made of steel.

Roller and bush chains are nearly identical in configuration, both featuring a series of inner and outer links. The first consists of two rollers rotating above the sleeves. Bush chains, on the other hand, dispense with these two rollers, coupling the sleeves directly to the sprocket. They have a simple roller/bush to tooth coupling and unlike toothed chains they produce some vibration or noise.

Toothed chains, or also known by the name of silent chains, have individual flanges and teeth that point in the reverse direction, that is, engaging in the toothing of the pulleys. Due to their kinetic behaviour, they can transmit power with a low noise level.

How important is chain lubrication?

Increasingly, the transmissions of many modern applications are subjected to growing loads. Compared to the belt, timing chain is more durable.

Chain lubrication is the key to the optimal performance of the chain and its greater durability, if adequate and timely lubrication is provided. On the other hand, poor lubrication will cause premature wear of this component, as well as friction, increased energy consumption and will cause an increase in temperature that is harmful to the entire transmission of the vehicle. Therefore, if the lubrication does not fulfil its function, the damage can be irreparable.

There are four common methods of timing chain lubrication: manual, drip, oil immersion, and pressure.

The benefits of a proper chain lubrication

• Significantly reduces premature wear on the chain pins and bushings.
• Prevents premature lack of synchronization.
• Softens the chain coupling with the sprocket, also at high temperatures.
• Protect the chain against wear and cushions impact forces.
• Extends the lifespan of the vehicle’s transmission.

Dolz Kits always include the latest OE chain design to increase the lifespan of this component.

Many chain kits in our range include self-lubricating chain, which features oil-impregnated roller holes to provide continuous lubrication.

   Chain from Dolz Timing Chain Kit SKCA001 – Multijet engine

How to maintain timing chain?

Typically, a timing chain is designed to last as the engine. But that does not mean that it is exempt from suffering a breakdown or needing certain periodic maintenance.

The most common causes of a failing timing chain are: elongation, fatigue and wear.

• The chain elongation (“stretch”) produces a lag of the transmission, which will generate noise and lead to a breakdown.
• Chain fatigue failure is caused by repeatedly exposing the chain to loads greater than the maximum allowable load.
• Wear directly affects engine performance and occurs primarily on pins, rollers and chain bushings.

For correct chain maintenance it is essential to pay special attention on the rest of the transmission components. A failing tensioner is the first warning sign that the chain may be experiencing elongation and may end up breaking.

Therefore, during the replacement of the timing chain, Dolz recommends replacing all the elements associated with the transmission at the same operation because all of them, like the chain, are subject to wear. This will make a perfect coupling of the components, will be more durable and give the best performance of the engine. Guaranteed solutions!

Dolz Tip: The new chain should always be properly lubricated after mounting.

Given the importance of lubrication, controlling the levels and the good condition of the oil will be essential to maintain the chain. This action must be carried out in accordance with the vehicle manufacturer’s recommendations.

Related content: Dolz Timing Chain Kit Unboxing video 

Dolz Kits, the most complete kits on the market

Dolz timing chain kits correspond to the top selling references on the market, which are available in the electronic catalog TecDoc (TecAlliance).

Competitive and quieter chains that promote longer transmission life. Always being the latest OE version.

Easy-Fit kits that include all the necessary components for a professional repair: chain, sprockets, VVT, tensioner, guides, oil seal, screws and bolts, etc.

Looking for a reliable and quality supplier? Get in touch and discover more!

La entrada Effective lubrication, key factor of the chain se publicó primero en Industrias Dolz.

What does a car timing chain do?

Virtually all internal combustion engines are equipped with a timing belt or a timing chain. A car or truck timing chain is a metal component, with links, essential for the correct synchronization of the movement of the crankshaft and the camshaft so that the valves open and close without the pistons hitting them.

By doing so, it transfers energy, creating a rotational speed that causes the camshaft to rotate at exactly half the pace of the crankshaft, allowing for speed control and transmission. It is a core part of the internal combustion engine, and it guarantees that the pistons and valves fire exactly when they should for smooth engine functioning.

When does a car timing chain need to be replaced? 

Because of the way it operates, a timing chain’s replacement timeframe is based on mileage rather than lifetime. Although the mileage’s replacement interval depends on each vehicle, timing chains might need to be changed between 80,000 and 120,000 miles, depending on whether there is a specific issue with it or following the manufacturer’s specifications.

Although later vehicle models host VVT applications that display engine error codes prior to rattle, older versions will show no alerts. Therefore, if a vehicle is close to 100,000 miles, it is worth looking for symptoms and signals that might indicate worn timing chain inefficiency before it starts to misfunction completely. 

Signals to replace a timing chain

• Lack of accelerating power and poor engine performance due to timing chain stretching.
• Engine starts driving rough or failing due to the pistons being damaged from contact with the valves.
• Unusual noises such as the engine starting to rattle while idling due the timing chain being loose.
• Metal shavings found in the engine oil due to the timing chain beginning to wear out.
• Complete engine failure due to a worn and broken timing belt.

Related content: Dolz Timing Chain Kits – Main Components

What factors cause damage to a timing chain?

If there is a problem with the car timing chain, your vehicle most likely has one or more than one engine malfunctions. One of the first noticeable symptoms will be noise, especially during a cold start of the vehicle, when oil pressure and flow are at their lowest level, so is chain lubrication.

Wear and tear can cause excess slack in the car timing chain, this will cause a rattling sound and, in extreme cases where the chain is in contact with its cover, a clanking sound. If the wear is great enough so the tensioner can no longer compensate for the slack, the noise can even continue even after the vehicle warms up.

DOLZ Timing Chain Kits, the most complete kits on the market

A complete Timing Chain Kits range with the top-selling references in the market with the aim of achieving the best possible engine performance and continuing to improve service.

DOLZ timing chain kits offer competitive, quieter chains that promote longer transmission life. Always being the latest OE version.

By using the highest quality materials with a synergistic design, these timing chains offer great robustness and reliability, 100% tested.

Easy-Fit kits that include all the necessary components for a professional repair: chain, sprockets, VVT, tensioner, guides, oil seal, hardware, etc.

Looking for a reliable and quality timing chain supplier? Contact us to know more!

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