Welding An Sbc Oil Pan Pick-Up: A Step-By-Step Guide

There are several methods for welding up an SBC oil pan pick-up. Some of the most common methods include using a MIG weld tack, brazing, TIG welding, or safety wiring. Each method has its own advantages and disadvantages in terms of effectiveness, heat generation, and potential for part distortion. It is important to consider the trade-offs involved with each method and select the one that best suits your specific requirements and constraints.

Brazing vs welding

When it comes to welding up an SBC oil pan pickup, there are a few different methods that can be used, including brazing and welding. Both brazing and welding are effective ways to join metals and create a strong bond. However, there are some key differences between the two processes, and each has its own advantages and considerations.

Brazing is a process where two metals are joined by melting a filler metal with a lower melting temperature than the base metals. The molten filler metal flows between the two base metals through capillary action, creating a strong joint without melting the base metals themselves. Brazing is often used when joining dissimilar metals, such as steel and copper, and it can result in less distortion due to lower heat input. Additionally, brazing does not require the pre-cleaning of the metals, as the flux used in the process takes care of removing impurities. However, one potential drawback of brazing is the risk of warping parts due to the high heat involved.

On the other hand, welding is a process that involves melting the base metals themselves and adding a filler metal to create a continuous piece. Gas welding, for example, uses a gas flame to melt the base metal and filler metal, which then intermix and cool to form a strong joint. Welding is typically associated with joining similar metals, such as steel to steel, and it generally results in a stronger joint compared to brazing. However, welding can be more challenging when working with small tubes or when joining dissimilar metals.

In the context of welding up an SBC oil pan pickup, both brazing and welding can be effective methods. Some people prefer brazing as it doesn't require tearing down the pump and can reduce the risk of warping parts. Additionally, brazing can be used to join dissimilar metals, which may be relevant when dealing with different types of tubing or components in the oil pan pickup assembly. However, welding, such as MIG or TIG welding, is also commonly used for this application and can provide a strong joint.

Ultimately, the choice between brazing and welding depends on various factors, including the specific materials being joined, the accessibility of the joint, and the desired strength of the final assembly. Both methods have their advantages and can be used successfully to weld up an SBC oil pan pickup, as long as the proper techniques and safety precautions are followed.

Press-fit oil pump pickup tube

First, it's crucial to determine the correct depth of the oil pump pickup. This is done by measuring the distance from the block rail of the pan to the bottom of the pan sump area. This measurement is then used to position the pickup at the right height. It's important to ensure that the pickup is not too close to the bottom of the pan, as this can restrict oil flow. A gap of approximately 3/8" is generally recommended.

Next, the press-fit process itself. Some tubes may simply slide into place, while others might require a gentle tap with a mallet to get them started. It's important not to force the tube, as this can damage the components. Once the tube is in place, it should be snug but not overly tight. At this point, you can use modelling clay to check the clearance between the pickup screen and the pan, making adjustments as needed.

Now, let's discuss securing the pickup tube. There are several methods you can use, each with its own advantages and considerations:

• Brazing: This involves melting and fusing a filler metal with the base metal of the tube and pump. It creates a strong bond but carries the risk of warping parts due to high heat. Brazing requires careful execution to avoid damaging nearby components.
• Welding: You can use a TIG welder or a gas wire feed welder to weld the pickup tube in place. A weld can provide a secure bond, but it's important to consider the different materials of the tube and pump, as steel-to-iron welds, for example, may be weak and prone to cracking over time.
• Loctite: Loctite makes products specifically for retaining press-fit sleeves. Their sleeve-retaining product can provide a strong and reliable bond without the heat-related risks of welding or brazing.
• Safety Wire: Some installers use thick safety wire to tightly wrap the pickup and then wrap the wire around the pump, in addition to brazing or welding. This provides an extra layer of security and helps prevent the tube from falling off.

When it comes to the actual welding or brazing process, there are a few additional tips to keep in mind:

• Remove the bypass spring before applying heat to the pickup, as the heat can weaken the spring's tensile strength.
• Keep the cover bolted onto the pump body during the process to reduce the chance of warping.
• After brazing, allow the assembly to cool down to room temperature in a bucket of dry sand. This helps prevent warping and ensures a strong bond.

In conclusion, installing a press-fit oil pump pickup tube requires careful measurement, precision, and attention to detail. By following the steps outlined above and choosing an appropriate securing method, you can ensure a reliable oil supply for your engine.

Clearance between oil pump and oil pan

When welding up an SBC oil pan pick-up, achieving the correct clearance between the oil pump and oil pan is critical to ensure sufficient oil pressure during engine operation. The recommended clearance varies depending on the type of oil pan and pump being used, and it is important to consult the manufacturers' specifications for the optimal range.

To measure the clearance, one can use modelling clay or plastic wrap with a blob of clay to take an impression of the gap between the oil pump pickup and the oil pan. This method helps to determine the exact distance between the two components. Another approach involves using a straightedge and a tape measure. By laying the straightedge on the pickup screen and measuring from the block rail, one can determine the distance between the pickup and the engine block.

When deciding on the appropriate clearance, it is important to consider the trade-off between having too much or too little space. Insufficient clearance can lead to the oil pan being sucked up against the pickup tube, potentially causing damage or restricting oil flow. On the other hand, excessive clearance can result in the formation of eddies or vortices, which can lead to pressure loss and the potential introduction of air into the oiling system.

Some recommended clearances for different types of pans are as follows:

• Ford Pans: 5/16" to 3/8" (.312"-.375")
• Chevy Pans: 5/16" to 3/8" (.312"-.375")
• Deep sump pans: Up to 1/2"

It is worth noting that the method of attaching the pickup tube to the oil pump can also impact the clearance. Some common methods include press-fitting, tack welding, brazing, and using products like Loctite to retain the press-fit. Each method has its advantages and disadvantages in terms of ease of installation, strength, and potential for warping the components.

Oil pump types

Welding up an SBC oil pan pick-up can be done in a few different ways. Some people recommend using a Mig Weld tack, while others suggest brazing as the best method, although this may risk warping parts due to high heat. Another option is to use a product like Loctite, which is designed for retaining press-fit sleeves. Some people also choose to weld the pickup to the pump, although this may not result in a strong weld between the steel and iron.

Now, let's discuss oil pump types in detail. There are a few different types of oil pumps commonly used in engines:

• Rotary Oil Pumps: These are the most common type of oil pumps and are typically driven by the engine's crankshaft. They use a rotating gear or rotor to create a vacuum and draw oil into the pump, which is then forced through the engine's lubrication system. Rotary oil pumps are simple, reliable, and effective, making them a popular choice for many engines.
• Gerotor Oil Pumps: Gerotor oil pumps are a type of positive displacement pump that uses a unique gear design to create a smooth, pulseless flow of oil. The name "gerotor" is derived from "generated rotor", as the inner rotor generates the shape of the outer rotor's teeth. This type of pump is known for its high efficiency and ability to handle high pressures.
• Waste Oil Pumps: These pumps are used to transfer used oil from one location to another, such as from an engine to a waste oil tank. They are typically electric-driven and are designed to handle thicker, more viscous fluids. Waste oil pumps are an important component of any environmentally conscious workshop, as they help to ensure that used oil is disposed of properly.
• High-Pressure Oil Pumps: In some applications, such as diesel engines or fuel injection systems, high-pressure oil pumps are used to deliver oil at extremely high pressures. These pumps are designed to withstand the extreme pressures and temperatures associated with these systems and often feature specialized materials and construction.
• Variable Displacement Oil Pumps: Variable displacement oil pumps are designed to adjust their output based on the engine's needs. This helps to improve fuel efficiency and reduce parasitic losses. These pumps can vary their displacement through a variety of methods, including adjusting the eccentricity of the pump's rotor or using a bypass valve to regulate the oil flow.

Each type of oil pump has its own advantages and applications, and choosing the right one depends on factors such as the engine design, performance requirements, and cost constraints. By selecting the appropriate oil pump and maintaining it properly, such as by ensuring the SBC oil pan pickup is securely attached, engines can operate efficiently and reliably.

How to measure oil pump pickup tube

To measure the oil pump pickup tube, you'll need to follow a few important steps to ensure accuracy and the correct clearance. Here's a detailed guide:

Firstly, it's crucial to understand the purpose of the oil pump pickup tube. This tube has a screen at the end, which sits as close to the bottom of the oil pan as possible without touching it. This ensures that all the engine oil is circulated and filtered. Inaccurate measurement can lead to engine damage due to oil starvation.

Now, for the measurement process:

• Measure the distance from the block rail of the oil pan to the bottom of the pan's sump area using a machinist square.
• Mount the oil pump, including the pickup tube, onto the rear main cap.
• Subtract 3/8 of an inch from the pan depth measurement.
• Use the machinist square to hold against the pickup, and mark the pickup and pump to indicate the correct position.
• Drive the pickup tube into place, ensuring it is perfectly straight to avoid jamming. Tap it with a mallet until it is seated fully and flush with the oil pump.
• Place a straightedge horizontally across the oil pump pickup screen, and then place a combo square vertically against it.
• Measure the height where the combo square and straightedge meet.
• Repeat this process on the other side of the engine. If the measurements are the same, it indicates that the pickup screen is perfectly parallel to the bottom of the oil pan.

It is crucial to double-check these measurements to ensure accuracy. Once confirmed, you can proceed with the welding process to secure the pickup tube in place.

Some additional tips for the overall process of welding up an SBC oil pan pickup include:

• Using modelling clay to check the clearance between the pickup screen and the oil pan.
• Checking the clearance by tapping the tube into the pan snugly but not tightly, and installing the pan gaskets dry for a mock-up.
• Using Loctite products or brazing/welding to permanently attach the pickup.
• Removing the bypass spring before brazing/welding to prevent weakening the spring's tensile strength.
• Using a gas wire feed welder to weld the pickup and pump together, ensuring a strong bond.

Remember to always follow safety precautions when working with welding equipment and allow sufficient time for cooling and ventilation.

Frequently asked questions