Borg Warner S300SX 88-75 Turbo
BW S300SX 88-75 Turbo
The S300SX 88-75 is one of the most interesting and versatile BorgWarner/Airwerks turbochargers available. Using an 88mm exducer and 62.99mm inducer compressor, this turbo is essentially a slightly smaller version of the GT4088R and is similar to the T04Z (aka pt67 or GT37R) and just below a 4088R. It comes standard as a T4 .88 a/r singlescroll turbo, but is easily upgradeable to twinscroll T4 with .91, 1.00, or 1.10 A/R.
The turbine wheel shares the identical outer dimensions as the S300SX 83-75, but with different turbine blade aerodynamics to flow more for its size. The Compressor is a 7 bladed 63mm inducer, 88mm exducer rated at ~75lb/min. Recommended for use in high flow 450-750whp applications Compressor housing is a 4" inlet, 3" outlet.
Due to the extra flow capacity in this turbine wheel, we recommend using the .91 for small disp 4 cyl engines, 1.00 for high flow 4cyl and 6cyls, and 1.10 for built stroker engines or high revving VTEC motors with big cams. Journal Bearing and Oil Cooled only (water cooling and BB CHRA not applicable).
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3AN oil feed line is recommended. If -4AN or larger is used, an oil restrictor is required (just like GT turbos)
We recommend upgrading to a .91 A/R modified to 3" Vband for twinscroll applications up to 20psi boost.
We recommend upgrading to a 1.00 A/R modified to 3" Vband for twinscroll applications up to 25 psi boost.
We recommend upgrading to a 1.10 A/R modified to 3" Vband for twinscroll applications over 25 psi boost.
Available as special order with a standard inlet compressor housing (as opposed to the 90 degree that normally comes on this turbo)
For transverse mounted engines such as Honda B series, Mitsubishi 4G63, etc.
Due to the 90 degree compressor housing outlet, this turbo is ideal for use in applications that have a forward facing turbo (subaru, supra, 240sx, skyline, k-series honda, etc).
Availability: It can take time to have this turbo shipped and in most cases they are made to order. We will email you after your order to get the additional configurations you would like.
**It can take 3-6+ weeks to receive this turbo after it is ordered**
*Special Order* - Your welcome to email us to inquire before ordering.
Borg Warner Turbo Troubleshooting guide.
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