Bore & Stroke 78 X 69.7
Capacity 1998
Power 130ps @5600
17.5kg's @4000
Compression 9.5 to 1
Single cam
The RB20E is the base model of the nissan RB series Its a single cam 2.0 liter.
This engine was used for company cars etc where fuel consumption was required.
It features in the r33 r34 series of skylines both 4 door and 2 door and came in manual or automatic.
RB20DE
Bore & Stroke 78 X 69.7
Capacity 1998
Power 165ps @5600
19kg's @4000
Compression 10.2 to 1
Twin cam
The RB20DE is the twin cam version of the above it is a great free reving engine.
The engine is refined and provides very good power for its capacity.
The engine is used in the R32 Skyline GTS models.It is economical and sporty in both auto and manual.
RB20DET
Bore & Stroke 78 X 69.7
Capacity 1998
Power 210ps @5600
25kg's @4000
Compression 8.5 to 1
Twin cam
The RB20DET is the performance 2 liter engine with good allround perfromance and reliability.
This engine responds well to modificaton and can make 400hp with the stock bottom end.
It features in the R32 series of skylines both 4 door and 2 door & 4WDand came in manual or automatic.
The automatic like all nissans makes about 5 hp less
RB25DE
Bore & Stroke 86 X 71.7
Capacity 2498
Power 190ps @5600
23.5kg's @4800
Compression 10 to 1
Twin cam
The RB25DE is the middlebrother of the nissan RB series Its a Twin cam 2.5 liter.
This engine is very torquey and is great if you don't require turbo performance.
It features in the R23 R33 R34 series of Skylines both 4 door and 2 door and came in manual or automatic.
also is came in the R33 & R34 gts-4 so that the gtr had no competion.
RB25DET
Bore & Stroke 86 X 71.7
Capacity 2498
Power 250ps @5600
30kg's @4800
Compression 9 to 1
Twin cam
The RB25DE is the main turbo Nissan RB engine it has a ceramic turbo and high compression for good power.
This engine invery torquey and resonds well to modification 450 hp has been achived .
It features in the R33 R34 series of skylines both 4 door and 2 door and came in manual or automatic.
RB26DETT
Bore & Stroke 86 X 73.7
Capacity 2568
Power 280ps @5600
37.5kg's @4000
Compression 8.5 to 1
Twin cam
The RB26DETT is the King of the Nissan RB series its a 2.6 liter twin turbo solid camed engine.
This engine is race extensively and has produce 1400hp and around 600 hp with stock internals.
It features in the R32,R33 ,R34 series of skyline Gtr's.
These cars are nicknamed godzilla for their strengh on the race
track featuring 4wd twin turbo's they are almost unbeatable on the track.
RB30DET
Bore & Stroke 86 X 86
Capacity 2998 approx
Power 400ps +
too much... @4000
Compression 7.5 to 1
Twin cam
The RB30DET is a hybrid of the Nissan RB series It is custom made by specalist tuners.
This engine can produce 6-800 hp at low revs eg 7500 due to its capacity.
It features in all types of Skyline there are three variants of it RB 20/30 RB25/30 RB26/30
This engine uses the block of the Australia only engine theRB30 which is Single Cam
This mean the cylinder head featured on the engine.The rb25 and 26 both sit without to much problem
but the rb20 requires extensive work to both block and head for it to fit.
RB30ET
Bore & Stroke 86 X 85
Capacity 2962
Power 200ps @5600
27.0kg's @4000
Compression 8.5 to 1
Single cam
The RB30ET is the Turbo model of the Australian Nissan RB series Its a single cam 3.0 liter.
This engine makes 400 hp fairly easy and has made 800 hp it has run 9.4 down the 1/4 mile in a Commodore.
This engine was used exclusively in the Holden (GM) commodore 1986-1988.It came in manual or automatic.
See some of the cars this engine is in (click here)
RB30E
Bore & Stroke 86 X 85
Capacity 2962
Power 160ps @5600
17.5kg's @4000
Compression 9.5 to 1
Single cam
The RB30e is the base model of the Australian Nissan RB series Its a single cam 3.0 liter
This engine was used for company cars etc where fuel consumption was required.
This engine was used in the Holden (GM) commodore 1986-1988.Also the Nissan Skyline R31 Made in Australia.
It came in manual or automatic.
RB30DE
Bore & Stroke 86 X 86.7
Capacity 2998
Power 250ps @7000approx
30.5kg's @4000
Compression 9.5 to 1
Twin cam
The RB30DE is is an N/A hybrid race engine. This engine is used for racing.and was not in production
by the way i just pasted tht 
thx to ALTIMA_GTS-R
