ISR Performance RS3871 Turbo - T2 - .64ar (Similar to GT2871R) - SR20DET

The ISR Performance RS3871 turbo brings GT2871R-class performance to the SR20DET without the price of a ball-bearing unit. With a T2 flange and 0.64 A/R turbine housing, it is sized to deliver significantly more top end power than the factory T25/T28 while staying compact enough to work with a bottom mount setup and standard SR supporting parts.

Turbo Specifications

• Compressor wheel: 49.2/71
• Turbine wheel: 53.8/47
• Exhaust side: 0.64 A/R turbine housing, T2 flange
• Compressor inlet: 3 inch
• HP rating: 350 to 400hp, rated up to approximately 380hp
• Suited to 1.8 to 2.2 liter four cylinder engines

Fitment

Nissan SR20DET, S13 and S14. Suitable for other 1.8 to 2.2 liter four cylinder applications with a T2 flange manifold.

Recommended Parts for a Bolt-On Install

• 90 degree 2.00 to 2.25 inch coupler for the hot pipe
• ISR intake kit for SR20DET S13 or Z32 MAF
• 45 degree 3.00 to 2.75 inch coupler for the intake kit
• ISR turbo line kit
• ISR turbine outlet O2 housing for Nissan SR20DET S13/S14, for an easier install

Important

This turbo requires a 3AN feed line. Do not use a 4AN feed line. Oversupplying oil to a journal bearing turbo pushes oil past the seals.

Expectations

Compared to the stock turbo, the RS3871 trades a little low RPM response for a much stronger pull through the midrange and top end. Fuel system, intercooler and engine management need to be ready for the 350 to 400hp range to make use of it.

All ISR Performance products are designed for off-road use only.