Where can I buy an SR20DET?
www.heavythrottle.com or
www.srswap.com (same company)
www.unstable-hybrids.com
www.phase2motortrend.com
www.mckinneymotorsports.com
www.venus-auto.com/nissan.htm
www.boostdynamics.com
www.autoimaging.com
www.projectsilvia.com
www.neishlinmotors.com
www.jspecauto.com
www.streetimports.com
www.nippon-motors.com
www.japanesemotorsport.com.au/engine_choice.htm
www.afterdark-tuning.com
www.jarcoinc.com
www.flashoptions.com
www.osakajdmmotors.com
What are the differences between the models?
In the USA the 240SX came as the following:
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S13 chassis - 1989-1994 There was a coupe and a hatchback version. There was also a limited edition convertable version. When going for the S13, most people go for the 89-93 because the 94 was available strictly as a convertable with an auto tranny. From 1989-1990 the coupe and the fastback both came with the KA24E. That's a single cam motor that puts out 140 HP and 160 lb-ft of torque. From 1991 and up it came with the KA24DE, a dual cam motor that puts out 155 HP and 160 lb-ft of torque. The S13 was also available with HICAS which is a 4 wheel steering system. Some people like it a lot and some hate it. If you plan on drifting, you don't want HICAS.
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S14 chassis - 1995-1998 Here it was available only as a coupe but got a different body styling. There are 2 different S14's though. From 1995-1996 the S14 came with oval headlights. From 1997-1998 the headlights were changed to a slanted, or "shark eye" style. That was the only difference between the 2 S14's. The S14 came with the KA24DE.
In Japan it came as 2 different models, the 180SX and the Silvia.
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S13 chassis - 1989-1998 The 180SX is the japanese version of our 240SX fastback. They are the same except for the motor that was in it. From 1989-1990 The 180SX came with the CA18DET. From 91+ the 180SX got the ever so popular SR20DET. From 1991 to 1995 I believe the SR20DET was the "redtop" and is signified by it's red valve cover. In 94 the 180sx got the S13 Blacktop. This motor was the exact same as the S13 SR20DET Redtop except the blacktop was just newer. Remember, this is the S13 blacktop. The S14 blacktop is totally different. In 96-98 the 180SX got new taillights. The silvia was also made on the S13 chassis in japan but only until 93. The S13 silvia is identical to our S13 240SX coupe except it had a different motor and different headlights. The Silvia came in 3 models in the S13 chassis. The Jack, Queen, and King. From 89-91 the Jack and Queen both got the CA18DE. From 91-93 the Jack and Queen both got the SR20DE. From 89-91 the King got the CA18DET. From 91-93 the King got the SR20DET. The SR that came in the S13 silvia's were the redtop SR's. This SR20DET had a T25 turbo
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S14 chassis - 1994-1998 On the S14 chassis, only the silvia was made. There was no 180SX made on the S14 chassis. The S14 Silvia is identical to our S14 240SX except for the motor. The S14 Silvia is like the Jack, Queen and King on the S13 chassis. The Jack and Queen both got the SR20DE while the King got the SR20DET. This SR20DET had a T28 ball bearing turbo. VVT was introduced to the SR20DET on the S14 chassis.
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S15 chassis - 1999- We didn't get the S15 chassis in the USA. The S15 got the newest version of the SR20DET. It also has the T28 ball bearing turbo like the S14. The S15 SR20DET got bigger fuel injectors that were 480 cc/min stepped up from the 370 cc/min injectors of the S13 and S14. The S15 also got a 6 speed transmission, but is said to be weak with drifters due to the thinner gears and break around 350-400 HP. I haven't really seen this proved because the Blitz S15 has about 450 HP and is still using the stock S15 tranny. VVT was used once again.
SR20DET Specs - (info is straight from www.srswap.com)
---180SX 91-93 and Silvia 91-93---
Displacement: 1998cc (2.0 liter)
Cam type: DOHC 16 valve, chain driven cam sprockets
Bore and stroke: 86mm x 86mm
Compression: 8.5 : 1
Horsepower: 205ps at 6000rpm
Torque: 203 ft/lbs at 4000rpm
Stock boost: 7 psi
Throttle body bore: 60mm
Injector size: 370cc/min
Turbo specs:
Compressor: T-25, 60 trim 56mm BCI-1 compressor.
Turbine: T-25, 62 trim 53.8mm 0.64 A/R turbine housing.
Center Section: Journal bearings
Aluminum alloy block and head with steel alloy sleeves. Distributorless, crank angle sensor activated ignition, direct fire coil packs. Stock SR's come with an internal wastegate, a knock sensor, a side mounted intercooler and a bypass valve that is routed back into the intake after the MAF before the turbo. Stock turbo outlet is 1 7/8 inches, inlet and throttle body are ~2 1/2 inches.
Performance:
The stock turbo will be safe to 13-15 psi. After that, the turbo is past its efficiency range, and power increases will fall off and are not worth the risk of turbo damage. The engine should produce 230-250 RWHP at safe boost.
---180SX 94-98---
Displacement: 1998cc (2.0 liter)
Cam type: DOHC 16 valve, chain driven cam sprockets
Bore and stroke: 86mm x 86mm
Compression: 8.5 : 1
Horsepower: 205hp at 6000rpm
Torque: 203 ft/lbs at 4000rpm
Stock boost: 7 psi
Throttle body bore: 60mm
Injector size: 370cc/min
Turbo specs:
Compressor: T-25, 60 trim 56mm BCI-1 compressor.
Turbine: T-25, 62 trim 53.8mm 0.64 A/R turbine housing.
Center Section: Journal bearings
Stats and Performance - same as s13 sr20det
---Silvia 95-98---
Displacement: 1998cc (2.0 liter)
Horsepower: 220hp at 6000rpm
Torque: 203 ft/lbs at 4800rpm
Bore and stroke: 86mm x 86mm
Compression: 8.5 : 1
Turbo specs:
Compressor: T-28, 60 trim 60 mm BCI-1 compressor in T-04B housing
Turbine: T-25, 62 trim 53.8mm 0.64 A/R turbine housing.
Center Section: Ball Bearing
Variable valve timing system and a different turbo are the significant changes from the S13 SR20DET engines. S14 uses 'low port' intake design vs. S13 'high port' design.
Performance:
The stock turbo will be safe to 13-15 psi. After that, the turbo is past its efficiency range, and power increases will fall off and are not worth the risk of turbo damage. The engine should produce 250-260 RWHP at safe boost.
---S15 Silvia 99- ---
Displacement: 1998cc (2.0 liter)
Bore and stroke: 86mm x 86mm
Compression: 8.5 : 1
Horsepower: 250ps at 6000rpm
Torque: 203 ft/lbs at 4800rpm
Transmission: 6 Speed, Close Ratio
Injector size: 480cc/min
Turbo specs:
Compressor: T-28, 60 trim 60 mm BCI-1 compressor in T-04B housing
Turbine: Inco turbine wheel. Cast divider wall between turbine discharge and wastegate.
Center Section: Ball Bearing
Additions: 6 speed manual transmission. The 6 speed cannot be used on the S13 and S14 motors, and uses a different driveshaft. Speed sensor is located in the differential.
Performance:
The stock turbo will be safe to 15-18 psi. After that, the turbo is past its efficiency range, and power increases will fall off and are not worth the risk of turbo damage. The engine should produce close to 300 RWHP at safe boost.
What do I need to install the SR20DET? (info from www.srswap.com)
---S13 SR20DET:---
Required Parts for the install:
Engine, transmission, alternator, starter, power steering pump, Crank Angle Sensor, ECU, harness, MAFS, Power Transistor / Ignitor Chip.
Fitment:
Fits into US 240SX S13 chassis with no modifications. Uses the host chassis driveshaft and differential. Uses the standard downpipe and catalytic converter with the 240SX catback exhaust. 89-90 chassis will need power steering lines and reservoir from 91-94 chassis.
---S14 SR20DET:---
Required Parts for the install:
Engine, transmission, alternator, starter, power steering pump, Crank Angle Sensor, ECU, harness, MAFS, Power Transistor / Ignitor Chip.
Fitment:
Fits into US 240SX S13 chassis with no modifications. Uses the host chassis driveshaft and differential. Uses the standard downpipe and catalytic converter with the 240SX catback exhaust. 89-90 chassis will need power steering lines and reservoir from 91-94 chassis. Fits into US 240SX S14 chassis with no modifications.
---S15 SR20DET:---
Required Parts for the install:
Engine, S15 6 speed transmission, S15 driveshaft, S15 differential, S15 speedometer, alternator, starter, power steering pump, Crank Angle Sensor, ECU, harness, MAFS.
Fitment:
The engine and transmission will fit into 95-98 S14 US 240SX chassis with minor modifications to the transmission mounts. The differential is needed as the speed sensor is located there.
The S13 chassis requires more work. The driveshaft has different mounting location from the S14 / S15 chassis. Custom work must be done.