MotoIQ Tech

Nissan VG30DETT

Engine Tech, Building the Nissan VG30DETT part 1

By Mike Kojima

Found in the 1990 to 1996 Nissan 300ZX twin turbos, the Nissan VG30DETT is a robust, sturdy engine right out of the box.  The VG30DETT like many Japanese engines of the era is pretty stoutly overbuilt in stock form, making it an excellent candidate for wringing high power levels out of it. 


 

Nissan QR25DE Engine Turbo by Jim Wolf Technology

Jim Wolf Technology's Turbo Nissan QR25DE Powerhouse - Part 1

By Mike Kojima

Compared to the late great SR engine family, the early Nissan QR25DE has a spotted history as a performance engine.  In the performance world it has earned a reputation for being fragile and the many recalls that Nissan has had for serious problems from blowing head gaskets to blowing rods out the side of the block has furthered this reputation.  The engine's redeeming features are a cylinder head that flows extremely well, a light overall weight and a strongly supported crank and lower end. A fragile engine is not going to work for our time attack Spec-V so we are going to address the engine’s weak points and see if we can turn the QR into a solid performer capable of racing levels of performance and reliability.


 

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