Speed Pro 158M Engine Crankshaft Main Bearing Set

Overview of Speed Pro 158M Main Bearing Set

The Speed Pro 158M engine crankshaft main bearing set is engineered for competition series applications, specifically designed for 2.0L Zetec DOHC engines. This main set is compatible with select Ford and Mercury models, providing reliable performance for high-demand driving conditions.

• Designed for 2.0L Zetec DOHC engines with L4 engine family
• Compatible with Ford and Mercury vehicles including Contour, Cougar, Escort, Focus, and Mystique
• Constructed from steel backed overplated bronze alloy for durability
• Super duty alloy material ensures strength under competition conditions
• Standard size set with sizes ranging from standard to -.026mm

Technical Details and Material Composition

The Speed Pro 158M main bearing set is manufactured using a steel backed overplated bronze alloy, providing a balance of wear resistance and load capacity. The super duty alloy material enhances durability, making it suitable for competition series engines. This set is designed to fit the 2.0L Zetec DOHC engine, part of the L4 engine family, commonly found in Ford and Mercury vehicles. The bearing sizes include standard and undersized options down to -.026mm, allowing precise fitment and optimal crankshaft support.

Compatible Vehicles and Applications

This main bearing set is compatible with a range of Ford and Mercury models equipped with the 2.0L Zetec DOHC engine. Compatible vehicles include:

• Ford Contour
• Ford Cougar
• Ford Escort
• Ford Focus
• Mercury Mystique

It is specifically designed for competition series use, making it suitable for performance and racing applications where engine reliability and precision are critical.

Common Issues Addressed by the 158M Main Bearing Set

• Excessive crankshaft wear due to inadequate bearing support
• Engine knocking caused by worn or damaged main bearings
• Oil pressure loss related to bearing clearance issues
• Reduced engine performance from bearing material fatigue
• Fitment problems in 2.0L Zetec DOHC engines requiring precise sizing

Installation Notes and Tips

When installing the Speed Pro 158M main bearing set, ensure the crankshaft journals are clean and free of debris. Verify the bearing size matches the crankshaft journal measurements, especially if using undersized bearings (-.026mm). Proper lubrication during installation is essential to prevent initial wear. Follow manufacturer torque specifications for main bearing caps to maintain correct bearing clearance and engine performance.

Quality Assurance and Warranty

Speed Pro manufactures the 158M main bearing set to meet stringent quality standards for competition engines. The use of steel backed overplated bronze alloy and super duty materials ensures durability under high stress. While specific warranty details are not provided, Speed Pro products are generally backed by quality control processes to ensure fitment and performance consistency.