Second-Hand Connecting Rods | Repair of Connecting Rods | Reconditioning of Connecting Rods – RA Power Solutions

Connecting rods of high capacity, main and auxiliary engines are repaired by RA Power Solutions. Connecting rods during the operation of the engine are heavily stressed, transmitting power generated in the combustion chamber to the crankshaft. It is important that periodically or at the time of general overhauling, the condition of the connecting rod is checked, and either it is replaced or connecting rod is reconditioned.

Inspection of Crankshaft is in Process
Inspection of Crankshaft is in Process

RA Power Solutions has four decades of experience in reconditioning of connecting rods up to the bore size of 500 mm.

Following process is adopted for successful reconditioning of connecting rods:

  • Connecting rod is subject to chemical cleaning and shot blasting after dismantling.
  • The big end and small end bore of connecting rod are checked and recorded
  • Connecting rod is checked for cracks and overheating by MPI or Dye penetrant test.
  • The serration of the joining face connecting rod bolts are also subject to crack detection.
  • Center to center distance of big end bore and small end bore is also checked.
  • Straightness of connecting rod is also checked.
Inspection of Connecting Rod
Inspection of Connecting Rod
Inspection after Reconditioning of Connecting Rods
Inspection after Reconditioning of Connecting Rods

The connecting rod’s big end and small end are re-machined/bored on the latest design of the boring machine equipped with DRDO. All the connecting rods repaired by us are guaranteed for satisfactory performance and are 100% check for quality.

Second hand connecting rods of CAT 3616 engine
Second-hand connecting rods of CAT 3616 engine
Second hand connecting rods of MAK engine in stock
Second-hand connecting rods of MAK engine in stock

We also maintain a large stock of repaired connecting rods which are reconditioned strictly as per the manufacturer’s specifications and tolerance. Generally, the cost of a reconditioned connecting rod is ¼ of the connecting rods sold by engine manufacturers.
We maintain the stock of connecting rod for the following engines:

Wartsila, Daihatsu, MWM, Caterpillar, Man, Mak, B&W, Sulzer, Bergen, Detroit Diesel, Stork Werkspoor, Pielstick, Deutz, Yanmar, MTU, Cummins, Nohab Polar, Caterpillar, Mitsubishi, Yanmar, Mak 551, Mak 552, Mak 453, Mak 451 AK , Mak 452 AK, Deutz 540 , Deutz 358 , Deutz 350, Pielstick PC 2.2 PC 2.5, Wartsila 524, Wartsila 824 TS, Sulzer 6 AL 25/30, Sulzer 5 AL 25/30 MWM TBD 484, MaN 40/54 , Man Sulzer 12 ASV 25/30, Sulzer 16 ZV 40/48, Deutz BV 16M 540, B&W 6L 45 GFCA, MAN B&W 55/GF, CAT D353, B&W 5T23LH, Daihatsu 6 PST 26D, Daihatsu 6 PSHTb 26M, Mak 6MU 451 AK, Deutz 6M 628, Caterpillar 3512, Deutz BV 12M 628, MWM TBD 234, WICHMANN 5AX, SKL 8NVD 48A-2U, Pielstick PC 2.2 LNR, Caterpillar 3508 and more.

Second hand connecting rods of Wartsila Engine
Second-hand connecting rods of Wartsila Engine
Connecting rods under inspection
Connecting rods under inspection

The author of the blog is Mr. Raj Shahani, Managing Director of the company. He is having 44 years of experience in providing new and reconditioned marine engine spares like connecting rod, cylinder liners, cylinder head, crankshaft, heat exchangers, gaskets, camshaft, white metal bearings, and many more.

For more information regarding engine connecting rods, bearings for Daihatsu engine, bearings for Yanmar engine, and new and reconditioned engine spares with the guarantee, please email us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

Connecting rods of high capacity, main and auxiliary engines are repaired by RA Power Solutions. Connecting rods during the operation of the engine are heavily stressed, transmitting power generated in the combustion chamber to the crankshaft. It is important that periodically or at the time of general overhauling, the condition of the connecting rod is … Continue reading “Second-Hand Connecting Rods | Repair of Connecting Rods | Reconditioning of Connecting Rods – RA Power Solutions”

Connecting Rod Reconditioning for Marine & Diesel Engines

At RA Power Solutions, we understand that connecting rods endure immense operational stresses—from rapid acceleration and deceleration to reciprocating motion and high rpm. Over time, wear and tear can lead to taper and ovality, misalignment, and even micro-cracks in rods and bolts.

Why Connecting Rod Reconditioning Matters?

  • High-pressure environment: The connecting rod sustains piston weight, combustion shock loads, and high rpm—making accurate alignment and dimensional integrity essential.
  • Common defects: Big and small end taper or ovality, loss of centerline alignment, and fatigue-related bolt cracks. These issues affect efficiency and can lead to costly engine failure.
Connecting Rod Assembled with Piston after Repair

Coverage Across Multiple Engine Brands

With over 45 years of expertise, RA Power Solutions reconditions connecting rods for all major marine and industrial diesel engines, including: MAN‑B&W, Sulzer, Wärtsilä, Mak, Deutz, Pielstick, Mitsubishi, Daihatsu, Yanmar, Bergen, Niigata, Caterpillar, Paxman, Crepelle, and many more.

We also stock a vast inventory of reconditioned rods—pricings typically one-third of new OEM parts, offering substantial savings without compromising quality.

Key Benefits at a Glance

FeatureBenefit
Comprehensive testingMPI crack detection ensures safety
Accurate machiningMaintains precision tolerances
OEM-level certificationQuality assurance with calibration reports
Significant cost savingsUp to ~66% cheaper than new rods
Large inventory coverageSupport for dozens of engine makes/models

Following steps are followed for reconditioning and resizing of connecting rod

  • We check the connecting rod for parallelism and alignment. We also inspect the big end and small end for taper and ovality.
  • RA Power Solutions Pvt. Ltd. recommends not repairing connecting rods that are bent, based on their experience.
  • We perform crack detection by MPI on the bolt seating area and bolts during connecting rod reconditioning.
  • The connecting rod bolts are under heavy stress all the time and develop hairline cracks. It is recommended to replace connecting rod bolts after certain hours of operation as specified in the manual.
  • We re-bore the connecting rod big end to the standard size and maintain the required tolerances. For the small end, we recommend replacing the bush and re-boring it while ensuring the center distance between the big end and small end bores matches the manufacturer’s specifications..
Connecting Rod of Yanmar Ready for Dispatch
Reconditioning of Connecting Rod

Ready to Retrofit Your Engine with Reconditioned Connecting Rods?

Boost engine reliability and slash maintenance costs with precision-engineered, certifiable connecting rod reconditioning. We’re here to support your marine, industrial, or power generation needs with global reach and expert execution.

Connecting Rod Reconditioning
Connecting Rod Reconditioning
Connecting Rod of Diahatsu Marine Diesel Engine
Connecting Rod of Diahatsu Marine Diesel Engine

For more information regarding Connecting Rod Reconditioning, Connecting Rod for marine engine. Contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

Q1: What is connecting rod reconditioning?

Connecting rod reconditioning is the process of restoring worn or damaged connecting rods to their original specifications. It includes checking for cracks, re-boring the big and small ends, replacing bushes, and ensuring alignment and correct center-to-center distance.

Q2: When should a connecting rod be reconditioned?

Reconditioning is recommended when there is excessive ovality or taper in the big or small end bores, loss of alignment, visible wear, or damage caused by overheating or improper lubrication.

Q3: Can all connecting rods be reconditioned?

No. If the connecting rod is bent or has deep cracks (especially around the bolt seating area), it is not recommended for repair. We evaluate each rod individually using MPI and dimensional checks.

Q4: What is the importance of replacing the bush in the small end?

The bush ensures the correct fit and function of the piston pin. Replacing and re-boring the bush helps maintain proper clearance and ensures the center distance between the big and small end is within OEM specifications.

Q5: What testing methods are used during reconditioning?

We use Magnetic Particle Inspection (MPI) to detect surface cracks. Dimensional checks are performed for parallelism, taper, ovality, and alignment. Final measurements are verified against manufacturer tolerances.

At RA Power Solutions, we understand that connecting rods endure immense operational stresses—from rapid acceleration and deceleration to reciprocating motion and high rpm. Over time, wear and tear can lead to taper and ovality, misalignment, and even micro-cracks in rods and bolts. Why Connecting Rod Reconditioning Matters? Coverage Across Multiple Engine Brands With over 45 … Continue reading “Connecting Rod Reconditioning for Marine & Diesel Engines”