After the two-liter model launched, RB series introduced a displacement in a very rare version, it is RB24S, strictly speaking, it is a low-cost hybrid version of the engine, hybrid because it uses the RB25 in cylinders and RB30E The cylinder head, and then matched RB20E linkage group formed, bore is 86mm, and the piston stroke and RB20E same 69.7mm, cheap is its gas distribution system, the factory canceled the ECCS electronic fuel injection system and change lagging behind on the carburetor. This engine can generally be seen only in the non-native models sold in Japan, the country has been on sale in the US regulatory Cefiro 2.4 is to use it.
However, this low version only alternative, in the civilian model of the most powerful RB25 series began in 1993 officially loading. RB25 series consists of two versions of a total of around four models, namely ordinary RB25DE, single turbo RB25DET, the later called NEO RB25DE and NEO RB25DET, early models only intake camshaft installed NVCS (Nissan Variable Cam System) variable valve timing system. Four different configurations RB25 engine Eclipse rods power output from the early post-190 has jumped to a hydraulic valve timing equipment ranging from 280 NEO RB25DET adjustment system, which is the main vehicle carrying almost inseparable Skyline cars, from R32 start has been extended to R34, of course, also includes Stagea dubbed Skyline travel version.
Apart from the above RB20 line, RB24S, RB25 series of three displacement version, there is a product called RB30 series, the engine began to be supplied to the M30 Tommy Kaira use (in fact, Skyline R31 modified production car), supply, while small, but you can say that the emergence of this engine behind accidentally became a modified RB26DETT sector What happened after many modifications RB26DETT engine saab 9-5 turbocharger, although the cast iron cylinder modified to bring many advantages to convenience But if take the Toyota 2JZ-GTE contest, then the gap between 400cc displacement is obvious, so they thought it was in the cylinder with a RB30 (bore and stroke parts are 86mm, RB26 stroke of 73.7mm ) and even the head part RB26DETT RB25DET be hybrid solution, of course, the fact that this play can be an effective solution to the problem of inadequate exhaust out, as long as there are parts suppliers willing to provide high-performance 86mm stroke rod assembly , "RB30DETT" modified space is very high.
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