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Difference Between RB 25 and RB 26

auto-pdRB 25 vs RB 26

The RB engines are different from other engines, and have always been the best with their technical characteristics and looks. RB engines are known for their high quality, drivability, durability and low fuel consumption. Well, the RB 25 and the RB 26 are two RB engines that come with even more power and efficiency.

The RB 25 and the RB 26 engines are different in many ways. While the RB 25 is a 2.5 L, 2498 cc engine, with a bore of 86.00 mm and a stroke of 71.7 mm, the RB 26 is a 2.6 L, 2568 cc engine, with a bore of 86.0 mm and a stroke of 73.7 mm.

Another difference is that RB 26 engines are more powerful than the RB 25 engines. Moreover, the RB 25 has hydralic lifters, whereas the RB 26 has solid lifters. When comparing their cost, the RB 25 engine is cheaper than the RB 26 engine.

When talking about RB 25 engines, they come in three types ‘“ RB 25 DE, RB 25 DET and NEO RB 25 DET. It was in 1993 that the RB 25 DE and the RB 25 DET engines were produced. In 1998, the RB 25 DET was fitted with a NEO head.

The RB 26 engines were used primarily from 1998 to 2002. Another added feature that can be seen in the RB 26 engines, is that they come with six individual throttle bodies. The engines also come with a twin turbo system, parallel. The RB 26 DETT engine is known as the king amongst all Nissan RB engines. The RB 26 engine has the power to produce 1400 horse power.

The RB 25 and the RB 26 also differ in their capacity. While the RB 25 comes wth a capacity of 2498 cc, the RB 26 comes with a capacity of 2566 cc. The RB 25 DE comes with a power of 190 hp at 5600 and the RB 25 DET comes with a power of 250 hp at 5600. On the other hand, the RB 26 comes with a power of 280 hp at 5600.

Summary

1. RB 26 engines are mopre powerful than RB 25 engines.

2. The RB 25 engines are 2.5 L, 2498 cc engines, with a bore of 86.00 mm and a stroke of 71.7 mm. On the other hand, the RB 26 engine is a 2.6 L, 2568 cc engine, with a bore of 86.0 mm and a stroke of 73.7 mm.

3. The RB 25 engine has hydralic lifters, whereas the RB 26 engine has solid lifters.

4. The RB 25 engines are cheaper than the RB 26 engines.

5. An added feature of the RB 26 engine is that it comes with six individual throttle bodies.


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1 Comment

  1. There is lots of incorrect info in this post.

    Firstly, The RB25 NEO has the same factory quoted power output as the RB26(206KW). The Neo also uses a completely redesigned cylinder head, RB26 rods and new pistons and has Solid lifters like the 26.

    The RB26 was produced from 1989 till it ceased production in 2002, you’re half right there. However there was more than twice as many R32 GTR’s produced than there was R33 GTR’s and more than 3 times as many 32R’s as there were 34R’s meaning the RB26 was primarily used and produced between 1989 and 1994.

    Moving back to 25’s for a moment, whilst there is 25DE, DET and NEO variants There’s more to it than that.

    Late model R32’s had the first RB25’s which were non turbo(DE) did not have VCT(Variable Cam Timing) following on from that was the Early model R33 RB25DE and DET which bought along VCT and a few other minor changes. The Late model R33 RB25’s removed the standalone igniter and had individual igniters built into each coilpack instead. The turbo variants also had a slightly revised turbocharger which had a Nylon compressor wheel instead of metal like the earlier models, this is said to aid the turbo in spooling resulting in a slightly more responsive setup. The NEO some of which I have already outlined above also bought to the table twin throttle bodies for the Non Turbo models and a slightly larger turbine housing for the Turbo variants.

    Your statement “The RB 26 engine has the power to produce 1400 horse power.” makes absolutely no sense and in standard form the engine is nowhere near strong enough to handle anywhere near this kind of power. The RB25 can also be built to withstand similar levels.

    I could go on…

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