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Parts for Detroit Diesel 12V71 Non-Turbo for Canada - Connecting Rod Section

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Parts for Detroit Diesel 12V71 Non-Turbo – Connecting Rod Section

The Detroit Diesel 12V71 Non-Turbo engine is part of the legendary 71 Series—an iconic two-stroke powerplant used in countless industrial, marine, and heavy-duty applications. Known for its mechanical simplicity, durability, and dependable output, the 12V71 Non-Turbo relies on precision-balanced components to maintain consistent performance. One of the most critical assemblies in this engine is the connecting rod system, which transfers the energy from each piston to the crankshaft, converting combustion into mechanical motion.

This section covers every essential component related to the connecting rod assembly for the Detroit Diesel 12V71 Non-Turbo engine, including the rods themselves, bearings, bushings, spacers, and fasteners. Each part is built or remanufactured to meet OEM specifications, ensuring proper fitment, strength, and long-term operation under continuous heavy-duty loads.

Detroit Diesel Connecting Rod for 12V71 Non-Turbo – 1-Piece Piston

The connecting rod for 1-piece piston assemblies is a critical component designed to handle high combustion pressures while maintaining precise balance and alignment between piston and crankshaft. The rebuilt connecting rod for the 12V71 Non-Turbo is restored using OEM-grade forging and precision machining. It is sold with a refundable core deposit, reflecting Diesel Pro’s commitment to sustainability and rebuildable exchange programs.

Key Benefits:

  • Ideal for naturally aspirated Detroit Diesel 12V71 engines with 1-piece pistons

  • Fully rebuilt and balanced to factory tolerance

  • Ensures optimal crankshaft alignment and smooth operation

  • Ready for immediate installation after inspection and cleaning

Detroit Diesel Connecting Rod for 12V71 Non-Turbo – 2-Piece Piston

For engines using 2-piece piston configurations, the corresponding connecting rod features a slightly different geometry and weight balance to accommodate the separate crown and skirt design. These rods are remanufactured under strict quality control to restore factory performance. Each unit undergoes crack detection, resizing, and re-bushing as necessary to ensure like-new performance.

Highlights:

  • Designed for Detroit Diesel 12V71 Non-Turbo engines with 2-piece pistons

  • Restored to OEM standards for durability and fit

  • Sold with a refundable core deposit

  • Perfect for long-term marine and industrial duty

Connecting Rod Bushing for Detroit Diesel 12V71 Non-Turbo

The connecting rod bushing supports the piston pin and ensures smooth oscillating motion under high load. In the 12V71, this small yet vital component prevents metal-to-metal contact and helps maintain proper lubrication between the pin and rod. Over time, bushings wear down and can cause excess clearance, leading to knocking noises or uneven wear.

Recommended Replacement Intervals:

  • During any top-end overhaul or piston replacement

  • When excessive clearance or ovality is detected

  • To restore original oil film stability and quiet operation

Nut for Connecting Rod – Detroit Diesel 12V71 Non-Turbo

The connecting rod nut secures the rod cap bolts, maintaining critical clamping force during engine operation. These nuts are precision-threaded for uniform tension and are typically replaced anytime a rod bolt is serviced or re-torqued.

Features:

  • Hardened steel construction for lasting durability

  • Compatible with both 1-piece and 2-piece piston rod assemblies

  • Prevents loosening under high vibration or load

Bolt for Connecting Rod – Detroit Diesel 12V71 Non-Turbo

The connecting rod bolt anchors the rod cap to the rod body and bears the tension loads created during each combustion cycle. Proper bolt torque and condition are vital for preventing rod cap misalignment and bearing crush issues. Diesel Pro Power supplies both standard bolts and the specific variant used on 2-piece piston rods.

Key Notes:

  • Always replace rod bolts after removal during rebuilds

  • Use proper torque and stretch measurement procedures during installation

  • Available for both 1-piece and 2-piece piston configurations

Spacer for Connecting Rod – Detroit Diesel 12V71 Non-Turbo

The connecting rod spacer ensures precise clearance between connecting rods, helping maintain correct side play and oil flow. On multi-cylinder V engines like the 12V71, spacers play a key role in preventing rod-to-rod interference and maintaining crankshaft balance.

Details:

  • Designed for use with 2-piece piston rod assemblies

  • Machined to OEM thickness tolerances

  • Helps preserve even oil film distribution between connecting rods

Connecting Rod Bearing Shell Sets – Standard and Oversizes

Bearing shells form the friction interface between the connecting rod and crankshaft journal. Available in Standard, .010", .020", and .030" oversize, these shells compensate for wear or crankshaft regrinding during rebuilds. Proper selection of bearing size ensures oil clearance remains within factory specification—typically between 0.0015” and 0.003”.

Options:

Best Practices:

  • Always measure crankshaft journals before ordering bearings

  • Replace both upper and lower shells during overhaul

  • Lubricate surfaces with assembly lube before initial startup

Importance of Proper Connecting Rod Maintenance in the 12V71 Non-Turbo

The Detroit Diesel 12V71 Non-Turbo is an enduring design that can operate for tens of thousands of hours when properly maintained. However, the connecting rod assembly is one of the first areas to exhibit wear due to the high forces involved in each combustion stroke.

Common Symptoms of Worn or Damaged Connecting Rod Components:

  • Low oil pressure due to excessive bearing clearance

  • Knocking or thudding noises under load

  • Uneven compression or piston slap

  • Metal shavings in oil filters or crankcase

  • Vibration or imbalance at higher RPM

Timely replacement of connecting rod bearings, bushings, and fasteners ensures continued reliability and prevents catastrophic crankshaft or piston failure.

Why Choose Diesel Pro Power for 12V71 Non-Turbo Connecting Rod Parts

When maintaining or rebuilding your Detroit Diesel 12V71 Non-Turbo, Diesel Pro Power stands as the trusted global source for high-quality engine components. With over 40,000 satisfied customers worldwide, Diesel Pro Power offers a streamlined online experience that makes finding and ordering genuine parts simple and fast.

Advantages of Buying from Diesel Pro Power:

  • All parts verified for OEM-quality standards

  • Worldwide shipping with real-time stock visibility

  • Expert support from diesel specialists familiar with every Detroit Diesel model

  • Fast order processing for commercial, industrial, and marine users

  • Clear core deposit policies for rebuilt components

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