Bore and Stroke
All Nissan engines follow a naming convention, identifying the engine family (in this case, RB), displacement, and features present- see the list of Nissan engines for detail.
The stock dimensions for the RB engines;
- RB20 - 2.0 L (1998 cc, bore: 78.0 mm, stroke: 69.7 mm)
- RB24 - 2.4 L (2428 cc, bore: 86.0 mm, stroke: 69.7 mm)
- RB25 - 2.5 L (2498 cc, bore: 86.0 mm, stroke: 71.7 mm)
- RB26 - 2.6 L (2568 cc, bore: 86.0 mm, stroke: 73.7 mm)
- RB30 - 3.0 L (2962 cc, bore: 86.0 mm, stroke: 85.0 mm)
- "D" indicates a dual overhead cam as opposed to a single overhead cam
- "E" indicates the engine is electronically fuel-injected
- "S" indicates the engine is carburetted
- "T" indicates the engine has a factory installed turbocharger
- "TT" indicates the engine has factory installed twin turbochargers
- "P" indicates the engine runs on LPG(Liquefied petroleum gas)
Read more about this topic: Nissan RB Engine
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