ISR Performance Ball Bearing RSX3576 Turbo

The ISR Performance RSX3576 is a larger frame dual ball bearing turbo for top mount setups on SR, KA, RB and JZ engines. It combines a 76mm billet compressor wheel with a ported shroud housing and a T3 turbine inlet, giving builders a modern ball bearing option that bolts to common T3 manifolds without the price tag usually attached to that spec.

Why ball bearing

Dual ball bearing cartridges reduce friction compared with journal bearings, which translates into quicker spool and sharper throttle response for a given wheel size. ISR balances every turbo to within OEM specifications and uses dual step gap rings on the shaft seals.

Specifications

• Bearing: dual ball bearing
• Compressor wheel: billet, 58mm inducer, 76mm exducer
• Compressor housing: .60 A/R, ported shroud, 4.0 inch inlet, 2.0 inch outlet
• Turbine wheel: 68mm inducer, 62mm exducer
• Turbine housing: T3 flange, choice of .64 or .82 A/R
• Turbine discharge: 90mm V-band (flange part number IS-FLA-090MM, clamp part number IS-CL-090MM)
• Oil feed thread: 7/16-24
• Oil drain: GT style (drain flange part number IS-GTDRN)

Oil restrictor required

Ball bearing turbos must not be fed unrestricted oil pressure. This unit requires a .036 to .040 inch oil restrictor, ISR part number IS-OR-3036. Running without one can push oil past the seals.

Applications

Top mount turbo manifolds with a T3 flange on Nissan SR20DET and KA24DE, RB series and Toyota JZ engines. Confirm wastegate and downpipe compatibility with the 90mm V-band discharge.

Choose the .64 turbine housing for faster response on smaller displacement engines, or the .82 for more top end on higher output builds.

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