Product Description
123005
The Chase JB400 Turbo is the smaller of GrimmSpeed's two offerings, this journal bearing unit is a perfect bolt-on to any stage 3 car, with which you are able to maximize the car’s power potential with instant results through installation/tuning. The Chase JB400 features a robust 49lb compressor wheel, with a 53mm turbine wheel to offer quick response and power in the mid-range where you need it. The Chase Version was able to hit 440WHP and 460WTQ on The GrimmSpeed Stage 3-equipped 2020 STI with the addition of only tuning and fuel mods. The impressive bit is that the vehicle was able to hold over 400WTQ from 4150RPM, an RPM range where the stock turbo begins to lose power. Compared to a tuned stock turbo STI, the Chase 400 is able to produce 70 more horsepower and 66 more ft/lbs of torque.
Quick Specs:
Compressor Wheel Size (Inducer/Exducer): 51.2mm / 73.8mm Extended tip, 48 Trim
Turbine Wheel Size (Inducer/Exducer): 53.8mm / 47mm, 76 Trim
Compressor Flow: 49 lb-min
Compressor Wheel Type Material/Alloy: Billet 2618
Compressor Housing Alloy: A356
Turbine Housing Alloy: D5S
Bearing Type: Journal
Severe duty 360 degree thrust bearing and twin hydrodynamic bearings –very robust for this size of turbocharger, to ensure reliability at high boost levels and in race applications
Dual piston rings and advance oil flinger design to combat oil leakage and CHRA pressurization
Compressor A/R: 0.65
Turbine A/R: 0.88
Adjustable Wastegate: Pre-set at 15Psi base pressure
Fitments
04-21 Subaru STI
02-07 Subaru WRX [Other modifications required]
04-08 Subaru FXT/Baja [Other modifications required]
08-14 Subaru WRX/FXT [Equipped with GrimmSpeed Intercooler, STI-Style Conversion Hose, etc]
05-09 Subaru LGT/OBXT [Equipped with GrimmSpeed Intercooler, STI-Style Conversion Hose, etc]
Usually ships within 4 days. 
