Malibu Boats Sportster Series Owner's Manual

Malibu Boats Sportster Series Owner's Manual Manual pdf 59 page image

4-3Engine/Drive TrainEngineFor information on engine service, maintenance, and break-in period, please refer to yourengine owner’s manual. The Required Maintenance Schedule included in this manualcovers the minimum maintenance required for Indmar engine packages. The MaintenanceWorksheet included in this manual outlines safety checks, lubrication, and general servicethat should be performed at regular intervals. It is recommended that any enginereplacement parts used for maintenance or repair be supplied by an authorized Malibudealer.Engine SpecificationsMalibu Carbureted Malibu Monsoon Malibu Hammerhead LS1 CorvetteVortec 310 HP 325 HP 365 HP 375 HPNumber of Cylinders V-8Displacement 5.7L 350 CIDBore/Stroke 3.898x3.622 in4.0012x3.480 in (101.63X88.39 mm) (99x92 mm)Compression Ratio 9.4:1 10.1:1Compression Pressure (Note 1) Minimum 100 PSI (690 kPa)Idle RPM in Neutral (Note 2) 650 + or - 50 RPMOperating Range at Wide Open Throttle 4600-5200 RPM 4400-4800 RPM 4600-5200 RPM 5400-6000 RPMOil Pressure at Idle 4 PSI (41 kPa) Minimum - HotOil Pressure at 2000 RPM 18 PSI (124 kPa) Minimum - HotFuel Pump Pressure 8 PSI Max 30 PSI Min at 40 PSI Min at 50 PSI Min at(55.2 kPa) Keyup (206.8 kPa) Keyup (275.8 kPa) Keyup (344.7 kPa)Electrical System 12 Volt DC Negative (-) GroundMinimum Battery Requirements 550 cca/700 mca/120AhFiring Order 1-8-4-3-6-5-7-2 1-8-7-2-6-5-4-3Spark Plug Type MR43LTS AC 41-931Spark Plug Gap .030 in (.76 mm) .045 in (1.1 mm) .050 in (1.3 mm)Base Timing at 1000 RPM (Note 3) 10 Degrees Before Top Dead Center Non AdjustableThermostat 160 Degrees F (71 C)Fluid CapacitiesCrankcase (With Filter) (Note 4) 5.5 Quarts (5.25 L) With FilterClosed Cooling System (Note 5) 12-14 Quarts (11.4-13.3 L)In-Line Transmission (Note 4) 2.12 Quarts (2.0 L)Walters V-Drive Transmission (Note 4) 2 Pints (.95 L)Notes1) Minimum recorded compression in any one cylinder should not be less than 70% of the highest recorded cylinder.2) Measured using an accurate shop tachometer at normal operating temperature. Idle RPM on EFI models is not adjustable.3) Timing must be set using special procedures indicated in the appropriate service manual. Timing cannot be set usingconventional methods. Special tool(s) required.4) Always use dipstick to determine exact quantity of oil required. Do not fill above “FULL” mark.5) Do not over fill. Correct level is 3/4" below filler neck when coolant is warm.