Why Boostline Connecting Rods Need To Be Part Of Your Next Build

While daydreaming about what I can do to build the ultimate diesel engine, my research directed me to the Boostline Products page. I have to admit, I was not well versed in the product line but after I read through the information on the website, I must say, I am glad I did.

Boostline has patented what they call the 3 pocket design and incorporated it into their connecting rods. The design came about when a demand for a stronger rod was needed. The Boostline connecting rods take the best attributes of an H- and I-beam rod and merges them into one. The Boostline 3-pocket plan dramatically improves the rod’s big end stability under tensile loads by incorporating triangle-shaped support gusseting on the big end. This design drastically increases the rod’s bending strength making it 60-percent stronger than a similar H-beam design, making it ideal for forced induction and other applications with high cylinder pressures, like diesel engines.

“The primary application for these are forced induction or nitrous combinations,” explains Nickolaus DiBlasi, director of product management for BoostLine Products. “There may be some folks who would use these in a naturally aspirated build, but it’s really intended for folks who are making big power. But no matter what kind of build you’re doing, this is likely to be the last solution you’re ever going to need.”

Connecting rods for the 5.9-liter Cummins (left) and the 6.6-liter Duramax (right).

It took 18 months of research, engineering, dyno testing, and everything in between before the design was released. Boostline now has connecting rods for GM Duramax 6.6-liter and Cummins 5.9- and 6.7-liter engines. According to Boostline, these rods are perfect for use in everything from a stock rebuild to 2,000-plus lb-ft of torque. Forged from 4340 chromoly steel, finish machined, and shot-peened to reduce stress risers, these rods feature Boostline’s tried and true 3 pocket design adapted for each specific diesel engine.

Test rods were installed into each diesel engine application and put on a dyno at S&S Motorsports. After a break-in cycle, Boostline ran the engines through a 50-hour endurance test where the connecting rods were subject to up to 2,100 lb-ft of torque. Afterward, the engines were disassembled and the rods were checked to compare to the benchmark specifications and dimensions of the pre-test measurements and design. After inspection, all test rods were well within tolerances in all critical areas measured.

There is a lot more information on the Boosline blog and you really need to check it out. You can read all about these Cummins and Duramax connecting rods by clicking here.

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About the author

Randy Bolig

Randy Bolig has been working on cars and has been involved in the hobby ever since he bought his first car when he was only 14 years old. His passion for performance got him noticed by many locals, and he began helping them modify their vehicles.
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