Titanium crankshaft

Types of Titanium Crankshaft

A titanium crankshaft is a shaft with a twisted rectangular cross-section that serves as a key component in an engine's operation. Its main function is to turn the reciprocating motion of the pistons into a rotary motion that can be used to turn the wheels of a vehicle. While it is a small metal shaft, the crankshaft is one of the most important parts of an engine, and so, its timely replacement is key for optimal engine performance.

There are different types of titanium crankshafts, with each designed to meet specific engine needs. They include:

• Standard Crankshaft

  A standard crankshaft is the most commonly used type of crankshaft in internal combustion engines. It is used in the operation of small vehicles and is made of cast iron or steel. The crankshaft is a crucial component of an engine, as it converts the up-and-down motion of the pistons into a rotational motion that helps power the vehicle. However, because it is an important part of the engine, it is also prone to damage, which can hinder its optimal operation. This is where standard crankshaft repair comes in. Standard crankshaft repair involves the checking, cleaning, and resurfacing of the crankshaft to restore it to its standard condition before it started malfunctioning.

• Stroker crankshaft

  A stroker crankshaft is an aftermarket crankshaft used to increase an engine's power output. It does this by increasing the engine's displacement, which in turn leads to an increase in torque and power. The stroker crankshaft achieves this by increasing the stroke length of the engine's pistons. When the motion of the pistons is stroked, it leads to a larger air-fuel mixture chamber, resulting in more power. The stroked crankshaft is available in two main types: the long-stroke crankshaft and the short-stroke crankshaft.

• V8 crankshaft

  A V8 crankshaft is used in a V8 engine, where eight cylinders are arranged in two V-shaped banks of four cylinders each. The V8 engine is known for its high power and smooth operation, making it a popular choice for heavy-duty vehicles such as trucks and buses. The crankshaft in the V8 engine converts the reciprocating motion of the pistons into a rotary motion, just like in other types of internal combustion engines.

Specifications and Maintenance of Titanium Crankshaft

The specifications of Ti crankshafts vary based on the needs of different customers. Here are some common ones:

• Size: Cranks for titanium rods come in different sizes depending on the engine's specifications. It includes the cylinder's bore size, the number of cylinders, and the engine's design. The size of a crankshaft affects its balance and how it fits in an engine.
• Weight: Titanium crankshafts are lighter than those made from cast iron or steel. The weight of a crankshaft affects how fast an engine can rev. A lighter crankshaft makes it easy for an engine to rotate its pistons quickly. This increases the engine's horsepower. However, too much weight loss from the crankshaft can make an engine run roughly.
• Balance: A titanium crankshaft is balanced to ensure its smooth operation. The piston strokes and crankshaft's weight are equal on all sides. This balance prevents vibrations when the crankshaft rotates. A balanced crankshaft improves an engine's performance and increases its lifespan.
• Configuration: The configuration of a titanium crankshaft depends on the design of the engine. For example, the crankshaft may have a different number of throws and pins based on the number of cylinders. The crankshaft's configuration affects the engine's torque and power output.

Below are the steps for maintaining a titanium crankshaft:

• 1. Inspection: The first step in maintaining a titanium crankshaft is inspecting it regularly. Look for any signs of cracks, dents, or damage. Also, check the pins and throws for any wear and tear. The earlier a problem is found, the easier and cheaper it is to fix. Inspecting the crankshaft involves taking apart the engine.
• 2. Cleaning: Clean the titanium crankshaft using a soft cloth and mild detergent. A wire brush should not be used to clean the crankshaft, as it can scratch the surface. When cleaning the crankshaft, do not use abrasive materials or harsh chemicals.
• 3. Lubrication: Proper lubrication is key to keeping the titanium crankshaft in good condition. Use a high-quality lubricant to oil the crankshaft's surface. This oiling reduces friction and prevents wear and tear. Remember to check the lubricant levels regularly and top up when necessary.
• 4. Replacement of Worn-out Parts: If any part of the titanium crankshaft is worn out or damaged, replace it as soon as possible. Use only the manufacturer's recommended spare parts when replacing any component of the crankshaft.

How to Choose Titanium Crankshaft

Here are some factors to consider when choosing a titanium crankshaft for an engine:

• Understand the Engine's Needs

  When choosing a titanium crankshaft, understanding the needs of the engine is essential. Factors such as the engine's size, number of cylinders, and the power it generates should be considered. This is because these factors determine the load and stress the crankshaft will undergo. The chosen crankshaft should be able to handle the stresses without failure.

• Consider the Engine's Purpose

  The purpose of the engine also plays a crucial role in deciding the crankshaft to use. For example, an engine used for racing requires a crankshaft that is lightweight and can generate high RPMs. This is because high-speed rotation places a lot of stress on the crankshaft. On the other hand, a heavy crankshaft is suitable for an engine used in trucks or for street use.

• Balance

  When choosing a titanium crankshaft, crankshaft balance is an important consideration. This is because an unbalanced crankshaft leads to vibrations that can cause damage to the engine components. A properly balanced crankshaft ensures smooth engine operation and increases the lifespan of the crankshaft and other engine parts. The crankshaft should be balanced to the specifications of the engine for optimal performance.

• Quality and Price

  Quality and price are important considerations when choosing a titanium crankshaft. High-quality crankshafts are more expensive but offer better performance and durability. On the other hand, low-quality crankshafts are cheaper but may not provide the desired performance and can wear out quickly. It is advisable to choose a crankshaft that is within the budget but of good quality.

• Installation and Maintenance

  When choosing a titanium crankshaft for an engine, installation and maintenance are important factors to consider. This is because some crankshafts are easier to install than others. Additionally, the maintenance required for the crankshaft should be considered. Some crankshafts require more maintenance than others.

How to diy and replace titanium crankshafts

Replacing a titanium crankshaft can be complicated, but with the right tools and knowledge, it can be done. Here is a step-by-step guide on how to replace a titanium crankshaft:

Step 1: Prepare the Work Area

• Make sure the work area is clean and organized.
• Gather all the necessary tools and materials.
• Ensure proper lighting and ventilation.

Step 2: Disconnect the Battery

• Disconnect the negative terminal of the battery to prevent any electrical accidents.

Step 3: Remove the Engine Covers

• Take out the screws or bolts holding the engine covers in place.
• Carefully remove the covers to access the crankshaft.

Step 4: Drain Engine Oil and Coolant

• Drain the engine oil and coolant into a clean container.
• Follow the manufacturer’s instructions for draining to avoid any spills or leaks.

Step 5: Remove the Connecting Rods and Piston Assemblies

• Take out the bolts connecting the rods to the piston assemblies.
• Carefully disconnect the rods and piston assemblies from the crankshaft.

Step 6: Remove the Crankshaft Pulley and Timing Gear

• Unscrew any bolts or nuts holding the crankshaft pulley and timing gear.
• Carefully take out these components to free up the crankshaft.

Step 7: Remove the Main Bearing Caps

• Unscrew the bolts holding the main bearing caps.
• Carefully take out the caps and set them aside.

Step 8: Crankshaft Removal

• Use a crankshaft puller or a similar tool to remove the crankshaft from the engine block.
• If necessary, gently tap the crankshaft with a soft-faced hammer to loosen it.

Step 9: Prepare for Installation

• Clean the crankshaft bearings and the surrounding area in the engine block.
• Apply a thin layer of engine oil to the bearings for smooth crankshaft installation.

Step 10: Installing the New Titanium Crankshaft

• Carefully insert the new titanium crankshaft into the engine block.
• Ensure proper alignment with the main bearings and other components.

Step 11: Reinstall Main Bearing Caps

• Place the main bearing caps back onto the crankshaft.
• Secure them with the previously removed bolts.

Step 12: Reconnect the Connecting Rods and Piston Assemblies

• Attach the connecting rods to the piston assemblies using the bolts.
• Make sure to follow the manufacturer’s torque specifications.

Step 13: Reinstall Crankshaft Pulley and Timing Gear

• Mount the crankshaft pulley and timing gear onto the new crankshaft.
• Secure them with the appropriate bolts or nuts.

Step 14: Reinstall Main Engine Covers

• Put back the main engine covers and secure them with screws or bolts.

Step 15: Reconnect the Battery

• Reconnect the negative terminal of the battery.

Step 16: Start the Engine and Check for Issues

• Start the engine and let it run for a few minutes.
• Check for any unusual noises, vibrations, or leaks.

By following these steps, the old crankshaft can be replaced successfully. It is essential to handle all components carefully and to use the proper tools for each step. If unsure about any aspect of the replacement process, consult a professional mechanic or refer to the manufacturer’s service manual for specific instructions.

Q&A

Q1: Are there any crankshafts that can be used for both gasoline and diesel engines?

A1: Unfortunately, no. Crankshafts are designed to match the specific characteristics of an engine's design and combustion process. Using a crankshaft not designed for a particular engine type could lead to mechanical failure and decreased performance.

Q2: What is the difference between a titanium crankshaft and an ordinary crankshaft?

A2: The only difference is the material. While the titanium crankshaft is made of titanium alloys, ordinary crankshafts are made of cast iron or steel. This gives the former an edge in corrosion resistance and high strength-to-weight ratio.

Q3: How long does a titanium crankshaft last?

A3: With proper maintenance, a titanium crankshaft can last for decades. However, the lifespan can vary depending on factors such as the quality of the crankshaft, the type of engine, and how well it is maintained.

Q4: Can beginners handle titanium crankshafts?

A4: Yes, anyone can handle titanium crankshafts. However, due to its lightweight and high strength, its handling requires care to prevent damage and ensure safety.

Q5: Do titanium crankshafts require special tools for installation and maintenance?

A5: Yes, titanium crankshafts may require specific tools designed for high-strength materials. This is to ensure proper torque and avoid damage to the crankshaft or engine components.