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Home >> Saab >> 1983 >> 900 S, 2D Hatchback, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Turbocharger >> Adjustments >> Boost Pressure

Boost Pressure

To adjust boost pressure, remove wire seal and circlip from charger regulator control arm and detach diaphragm lever. Loosen lock nut on lever and rotate lever end in appropriate direction. See CHARGE PRESSURE ADJUSTMENT  table.

Fig 1: Adjusting Charge Pressure Regulator
G34714
CHARGE PRESSURE ADJUSTMENT

Gauge Reading While Driving - psi (kg/cm2 ) Rotate Lever
5.51 (.38) 3 Clockwise
5.84 (.40) 2.5 Clockwise
6.13 (.42) 2 Clockwise
6.42 (.44) 1.5 Clockwise
6.72-8.03 (.46-.55) Correct Setting
8.17 (.56) 1.5 Counterclockwise
8.47 (.58) 2 Counterclockwise
8.76 (.60) 2.5 Counterclockwise
9.05 (.62) 3 Counterclockwise