2020 RSS

2020, Balancer, Damper, Fuel Pump -

Many owner-operators ask us about the difference between a damper and balancer, do they need one or both, and what is the purpose? Let’s start with the Torsional Viscous Damper and why you should replace it every half a million miles. Every semi-truck engine is equipped with a torsional damper from new. It’s a heavy circular object that sits on the end of the crankshaft externally from the engine. It’s job is to dampen vibrations coming from the crankshaft. This is an important job because your crankshaft deals with a lot of vibration which overtime can weaken the metal and...

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2020, Big Cam Cummins, Gauges -

Several years ago we thought the mechanical Big Cam Cummins and 425B Caterpillar engines would be gone by now, but they are not.  In fact, as of this writing we have six Big Cam Cummins engines being built by their owners. We are supplying the parts, specs, and knowledge for the clients to perform the build.  These are all performance engines and we have all the parts in stock.  We have the largest inventory of Big Cam Cummins parts in North America and Pat Sharp, Pete’s twin brother, is still rebuilding the fuel pumps, injectors, turbochargers, accessory drive assemblies, and...

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2020, Cooling, Dyno Tuning, ECM -

HIGH PERFORMANCE DIESELS Auxiliary coolant tanks, we have talked about this several times on the radio show. It’s a cooling solution only to be used when a larger radiator is not available.  I invented this system back in the early 1990’s for the Big Cam 4 low flow cooling engines.  We have used it several times on motorhomes and other trucks with poorly engineered radiator systems.  It’s quite simple, you purchase a small air tank for a semi truck and mount it in the frame rail near the transmission.  Locate the pipe plugs in the coolant system of the block...

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2020, Turbo -

Vibrations can break anything. This is a carrier bearing bracket out of Steve Kron’s 10 miles per gallon DD4 Detroit powered truck.  His rear drive shaft was out of alignment and was causing a vibration. As you can see in the picture, the U-shaped bracket that holds the carrier bearing broke and he was lucky he was going slow or a catastrophic accident would have happened. He was one mile from a truck stop, so he took a 2” ratchet strap and criss-crossed it from each side of the frame under the drive shaft to support the shaft to drive...

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2020, Big Cam Cummins, Catalyst, Peterbilt -

A BLAST FROM THE PAST - Last week we had a 359 Pete in our shop with a Big Cam Cummins 700+ horsepower engine we built years ago. This engine had our High Lift Camshaft and MVT (mechanical variable timing) system so there is no smoke at idle and the timing retards at high power to increase the life of the pistons. The pistons are a high strength Cummins piston that were ceramic and Teflon coated, which we still do.  It also has our performance turbocharger and oversized gear pump on the fuel pump which measured 1.25 inches vs the...

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