Nissan SR20DET

The SR20DET is part of the SR family of engines from Nissan.

Nissan SR20DET DOHC turbo EW engine from U13 Bluebird

It is a popular inline four-cylinder engine fitted into a variety of cars, generally the Nissan Silvia and 180SX. It also came in the Pulsar GTI-R, Nissan NX Coupe and the Nissan Bluebird. This engine replaced the CA18DE and CA18DET that originally powered the Silvia and 180SX. The CA18 was deemed too expensive to produce and no longer met Japanese emission standards, so it was replaced by the SR20. The SR, just like the out-going CA, was a turbocharged intercooled engine in top form. Nissan also produced a cheaper naturally aspirated version called the SR20DE. In the US and Canada, the Silvia and 180SX are both under the 240SX banner. USDM and Canada 240SX's come stock with the SOHC KA24E for earlier models, or the DOHC KA24DE for later models. Both are naturally aspirated engines producing 140 hp (100 kW) and 155 hp (116 kW) respectively. SR20DET engine swaps are becoming more commonplace due to the forced induction aftermarket additions available for the SR20DET. Many shops specialize only in SR20DET swaps.

The Garrett T25 turbo used on most SR20DET engines.

The breakdown of the engine code is as follows:

  • SR - Engine Code Name
  • 20 - 2.0 Liter Displacement
  • D - Dual Overhead Camshaft
  • E - Electronic Fuel Injection
  • T - Turbocharged
  • The Lack of the letter "D" on some of the engine identifications indicates a SOHC cylinder head.

Origins

The SR20DET was first produced in the Nissan Bluebird 2000SSS in transverse form.

However, the RWD Nissan Silvia and Nissan 180SX produced in 1991 were built with a longitudinally aligned SR20DET, in which the "T" stands for turbo. Some of the 180SX's were released with the SR20DET while others had the naturally aspirated SR20DE.

The engine then went on to be used in the Nissan Avenir in 1995, the Nissan R'nessa in 1997, Nissan Presage in 1998 and Nissan Liberty in 1999,

Out of all the Nissan models produced with the SR20DET, the Silvia was the longest running model to use it. The S14 and S15 use a bigger turbocharger than the S13 models.

S13 Black top - Came from 180sx's post 94 (Garrett T25G turbo)

S13 Red top - Came from S13 Silvia and 180sx pre 94 (Garrett T25G turbo) 370cc injectors were used.

S14 Black top - 91–98 Silvias - Variable Cam Timing or VCT was introduced on the intake cam (Garrett T28 journal bearing turbo for Australian and European markets and Garrett T28 Ball Bearing turbo for the Japanese market)[1] 370cc injectors were used.

S15 Black top - 99–02 Silvias. Same VCT as above, 6-speed manual transmission (Garrett Journal Bearing T28 for Europe and Australia and Ball Bearing T28 turbo for Japan)

480cc injectors were used and the intake manifold was redesigned [2]

While all factory manufactured SR20DET's featured a single turbine unit, some aftermarket tuners have engineered working twin-turbo configurations. One such kit produced by ENDLESS Japan featured two GReddy TD05-16g turbines in parallel. These were mounted on a custom exhaust manifold, custom downpipe and required many engine bay modifications to fit correctly. This twin-turbo setup achieved its peak power between 5,500–6,000 rpm at 2.2 bar.[3]

List of cars with the SR20DET
Model Spec Chassis Years Colour Turbo Market
Bluebird 2000SSS Attesa Limited U12 1989 T25g Japan
2000SSS Attesa Limited U13 91–93 Red top T25g Japan
2000SSS Attesa Limited U13 94–95 Black top T25g Japan
Pulsar GTI-R RNN14 90–94 Red top T28 Japan
Sunny GTI-R EGNN14 90–95 Red top T28 Europe
180SX All S13 91–93 Red top T25g Japan
All (except G/Type S) S13 94–97 Black top T25g Japan
Silvia K's S13 91–93 Red top T25g Japan
K's S14 94–99 Black top T28 (VTC), BB if JDM Japan
Autech Version K's MF-T S14 98–99 Black top IHI VN14 (VTC) Japan
270R S14 1994
Spec-R S15 99–02 Black top T28BB (VTC) Japan
Avenir GT Turbo Salut W10 95,97 Silver top T25g Japan
GT4 W11 98,00–01 Silver top T25BB Japan
Liberty GT4 Highway Star M12 99–00 Japan
R'nessa GT Turbo N30 97–01 Silver top T25BB Japan
200SX S14 93–99 Black top (VTC) Europe

Engine specification
  • DOHC 4 valves per cylinder, Chain driven cam sprockets
  • Bore X Stroke of 86 mm (3.39 in) X 86 mm (3.39 in)
  • Displacement of 1,998 cc (2.0 L; 121.9 cu in)

Comparison table
Car Engine Compression Power Torque Turbos Stock boost Turbine Compressor
'89 U12 Bluebird Ltd Redtop 8.5:1 150 kW (201 hp) @ 6000 rpm 202 lb⋅ft (274 N⋅m) @ 4000 rpm T-25g 7psi
'91–'95 U13 Bluebird Ltd Redtop 8.5:1 154 kW (206 hp) @ 6000 rpm 202 lb⋅ft (274 N⋅m) @ 4000 rpm T-25G 7psi
'95–'97 W10 Avenir Salut Silvertop 8.5:1 154 kW (206 hp) @ 6000 rpm 202 lb⋅ft (274 N⋅m) @ 4000 rpm T-25G 7psi
'97–'01 W11 Avenir GT4 Silvertop 8.5:1 169 kW (227 hp) @ 6000 rpm 203 lb⋅ft (275 N⋅m) @ 3600 rpm T-25BB 9psi
'90–'94 RNN14 Pulsar GTI-R Redtop 8.3:1 169 kW (227 hp) @ 6400 rpm 210 lb⋅ft (280 N⋅m) @ 4800 rpm T-28 10.6psi 79 Trim 53 mm (2.1 in) (Inconel), .86 A/R housing 60 trim 60 mm BCI-1 in T-3 housing
'90–'95 EGNN14 Sunny GTI-R Redtop 8.3:1 164 kW (220 hp) @ 6400 rpm 196 lb⋅ft (266 N⋅m) @ 4800 rpm T-28 10.6psi 79 Trim 53 mm (2.1 in) (Inconel), .86 A/R housing 60 trim 60 mm BCI-1 in T-3 housing
'91–'93 S13 Silvia, 180sx Redtop 8.5:1 151 kW (205 hp) @ 6000 rpm 203 lb⋅ft (275 N⋅m) @ 4000 rpm T-25G 7psi 62 trim 53.8 mm (2.1 in), .80 A/R housing 60 trim 56mm BCI-1
'94–'98 S13 180sx Blacktop 8.5:1 151 kW (205 hp) @ 6000 rpm 203 lb⋅ft (275 N⋅m) @ 4000 rpm T-25G 7psi 62 trim 53.8 mm (2.1 in), .80 A/R housing 60 trim 56mm BCI-1
'95–'99 S14 Silvia, 240sx Notchtop 8.5:1 162 kW (217 hp) @ 6000 rpm 205 lb⋅ft (278 N⋅m) @ 4800 rpm T-28 7psi, 14psi BB 62 trim 53.8 mm (2.1 in), .64 A/R housing, BB if JDM 60 trim 60 mm BCI-1 in T-04B housing
'99–02 S15 Silvia Notchtop 8.5:1 184 kW (247 hp) @ 6400 rpm 203 lb⋅ft (275 N⋅m) @ 4800 rpm T-28BB 7psi stock 62 trim 53.8 mm (2.1 in) (Inconel), .64 A/R housing, cast divider wall between turbine discharge and wastegate, ball bearing center section 60 trim 60 mm BCI-1 in T-04B housing

1990–1994 RNN14 Pulsar GTI-R

  • Compressor Flow: 33 lb/MIN
  • Throttle Body: Quad
  • Injector Flow: 440cc/min
  • Ignition Timing: 20º BTDC

1991–1998 180SX

  • Throttle Body Bore: 60 mm
  • Injector Flow: 370cc/min

1995–1999 S14 Silvia

  • Throttle Body Bore: 50 mm
  • Injector Flow: 370cc/min

1999–2002 S15 Silvia

  • Throttle Body Bore: 50 mm
  • Injector Flow: 444cc/min

See also

References
  1. http://www.silviawa.com/forums/index.php?showtopic=5954
  2. http://www.jdmspecengines.com/nissan-engines/sr-series/sr20det-engine.html
  3. http://www.180sx.club/sr20det-twin-turbo-kit/
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