Author

Niles Nimmo

Niles Nimmo has worked on turbochargers for 19 years and is the name behind PT Turbo's guides. PT Turbo has rebuilt and supplied turbochargers in San Bernardino, California since 1978, for diesel pickups, heavy-duty trucks, industrial equipment and performance gas engines. Every rebuild is balanced in-house on a high-speed VSR machine and carries a 12-month, unlimited-mileage warranty. Have a question about a guide or a turbo? Call the shop at (909) 824-1020.

Duramax LMM Turbocharger Guide: Variable Geometry Failure & Replacement
Diesel Truck Platforms

Duramax LMM Turbocharger Guide: Variable Geometry Failure & Replacement

If you run an ‘07.5 to ’10 GMC or Chevy with the 6.6L LMM Duramax, the variable geometry actuator on your Garrett GT3788VA turbocharger is the…

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Duramax LBZ Turbocharger Guide: GT3788VA Problems & Replacement (2006-2007)
Diesel Truck Platforms

Duramax LBZ Turbocharger Guide: GT3788VA Problems & Replacement (2006-2007)

If you’re running a 2006-2007 Chevy Silverado or GMC Sierra 2500/3500 with the 6.6L LBZ Duramax, the Garrett GT3788VA variable-geometry turbocharger is the beating heart of…

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Duramax LLY Turbocharger: Symptoms, Garrett GT3788VA Replacement & Cost (2004-2005)
Diesel Truck Platforms

Duramax LLY Turbocharger: Symptoms, Garrett GT3788VA Replacement & Cost (2004-2005)

If you run a 2004.5-2005 GMC Sierra or Chevy Silverado with the LLY Duramax, you already know the Duramax LLY turbocharger is the engine’s most temperamental…

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Turbocharger Oil Lines Explained: Feed Line, Return Line, and Why They Fail
Turbocharger Maintenance

Turbocharger Oil Lines Explained: Feed Line, Return Line, and Why They Fail

The turbocharger oil feed and return lines are the most overlooked part of a turbo system. A blocked or restricted oil line causes more repeat failures…

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Cummins QSB Turbocharger Guide: Marine, Industrial & Construction Applications
Diesel Truck Platforms

Cummins QSB Turbocharger Guide: Marine, Industrial & Construction Applications

The Cummins QSB is one of the most versatile diesel platforms ever built, and the turbocharger bolted to it is doing serious work whether that block…

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Cummins ISX Turbocharger Guide: HE400VG, HE451VE & HE561VE Differences Explained
Diesel Truck Platforms

Cummins ISX Turbocharger Guide: HE400VG, HE451VE & HE561VE Differences Explained

A Cummins ISX turbocharger is a Holset in every generation, but which Holset depends on when the engine was built. The HE400VG, HE451VE and HE561VE are…

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Cummins ISM Turbocharger Guide: HX55 & HE531V for On-Highway Trucks
Diesel Truck Platforms

Cummins ISM Turbocharger Guide: HX55 & HE531V for On-Highway Trucks

If you run a Cummins ISM, you already know the turbo is the heart of how this 10.8L workhorse makes power. The ISM has powered everything…

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Cummins ISL Turbocharger Guide: HX40W, HE431V & HE400VG by Engine Version
Diesel Truck Platforms

Cummins ISL Turbocharger Guide: HX40W, HE431V & HE400VG by Engine Version

This Cummins ISL turbocharger guide answers the first question on any ISL turbo job: which Holset is on this engine? The 8.9-liter ISL has been built…

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Cummins ISC Turbocharger Guide: HX40 & Replacement Options for Medium Duty Trucks
Diesel Truck Platforms

Cummins ISC Turbocharger Guide: HX40 & Replacement Options for Medium Duty Trucks

If you run a medium duty Cummins ISC, the turbocharger bolted to that 8.3L block is most often a Holset HX40. It is one of the…

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Cummins ISB 5.9L Turbocharger Guide: HX35 vs HE351CW for Dodge Ram Applications
Diesel Truck Platforms

Cummins ISB 5.9L Turbocharger Guide: HX35 vs HE351CW for Dodge Ram Applications

If you’re running a 12-valve 6BT or 24-valve ISB 5.9L Cummins under the hood of a Dodge Ram, the turbocharger bolted to that exhaust manifold is…

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Cummins ISB 6.7L Turbocharger Guide: Variable Geometry Operation & Common Failures
Diesel Truck Platforms

Cummins ISB 6.7L Turbocharger Guide: Variable Geometry Operation & Common Failures

If you run a Cummins ISB 6.7L, sooner or later the Holset variable geometry turbocharger is going to demand your attention. The VGT (variable geometry turbocharger)…

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HE351VE vs HE300VG: Complete Comparison for Ram 2500 & 3500 Cummins Owners
Turbocharger Tech Explained

HE351VE vs HE300VG: Complete Comparison for Ram 2500 & 3500 Cummins Owners

If you’ve turned a wrench on a 6.7L Cummins, you already know the HE351VE vs HE300VG debate isn’t academic. These two Holset variable geometry turbos define…

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