Sea-Doo Piston & Ring Set 587 SP/GT/SPI/XP/GTS/GTX 1988 1989 1990 1991 1992
    $69.95
    Brand: SBT
    SKU #: 700SB100
    Shipping Weight: 1.00 pounds
    Quantity in Basket: None
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    SBT Sea-Doo jet ski pistons are high quality, high strength, cast eutectic pistons. Our standard pistons are comparable to others premium pistons - anodized on the top surface for better heat resistance and surface strength

    1988 Sea-Doo SP Piston

    1989 Sea-Doo SP Piston

    1990 Sea-Doo GT Piston
    1990 Sea-Doo SP Piston

    1991 Sea-Doo GT Piston
    1991 Sea-Doo SP Piston
    1991 Sea-Doo SPI Piston
    1991 Sea-Doo XP Piston

    1992 Sea-Doo GTS Piston
    1992 Sea-Doo GTX Piston
    1992 Sea-Doo SP Piston
    1992 Sea-Doo SPI Piston
    1992 Sea-Doo XP Piston

    1993 Sea-Doo GTS Piston
    1993 Sea-Doo GTX Piston
    1993 Sea-Doo SP Piston
    1993 Sea-Doo SPI Piston
    1993 Sea-Doo SPX Piston

    1994 Sea-Doo GTS Piston
    1994 Sea-Doo SP Piston
    1994 Sea-Doo SPI Piston

    1995 Sea-Doo GTS Piston
    1995 Sea-Doo SP Piston
    1995 Sea-Doo SPI Piston

    1996 Sea-Doo GTS Piston
    1996 Sea-Doo SP Piston
    1996 Sea-Doo SPI Piston
    Piston to Cylinder Clearance:
    The piston size plus the clearance equals the final bore size. For the recommended clearances by make and model, see Table 1. The cylinder first should be bored to within 0.002 of the final bore size. The remaining 0.002 should be removed with a 400 grit cylinder hone. The honing process should be controlled such as to leave a 45 degree crosshatch pattern on the cylinder wall.

    Port Chamfering:
    Once the cylinder is honed to the final size, all of the ports in the cylinder wall should be chamfered with a file or chamfer tool. The chamfered edge should be cut at approximately a 30 degree angle around the entire port. The cylinder should then be honed with a 400 grit flex hone to apply a uniform finish and to re-establish the 45 degree cross-hatch pattern.

    Cylinder Cleaning Process:
    Clean cylinders in warm soapy water using a firm plastic brush (such as a tooth brush), then dry, and immediately lubricate with 2-stroke oil. Honing grit tends to reside in the crosshatch and must be scrubbed out. An extremely clean cylinder free of grit is critical in order to avoid drag marks and other damage to the cylinder wall after assembly.

    Setting the Ring Cap:
    Place the piston ring in the cylinder. Use the piston to push the ring approximately 5mm from the top of the cylinder in order to square the ring in the cylinder. Use a feeler gauge to measure the gap between the ends of the ring. If the gap is too small, one end of the ring must be filed. Re-install the ring and measure again to confirm the final dimension. Recommended ring gap clearances are shown in Table 2.


    Piston Installation:
    Install the base gasket (we recommend Threebond 1211 as a gasket treatment). Lubricate the wrist pin bearing with 2-stroke oil and install the piston on the connecting rod. The designation mark on the piston crown points in the direction as shown in Table 3. Install the c-clips with the open end in either the 6 or 12 oclock position. Install the rings onto the piston. Using your hands or a ring compressor, collapse the rings into the ring grooves and install the cylinder. Torque cylinder to proper torque specifications.

    Table 1: Piston to Cylinder Clearance

    Clearance

    Application

    2 Stroke

     

    .004-.005

    Kawasaki 440, 550, 650, 750, 900, 1100
    Yamaha 500, 650, 701, 760, 1100, 1200

    .0045-.0055

    Yamaha 800, 1200pv, 1300

    .005-.006

    Seadoo 580, 650, 720, 800
    Polaris 650, 750, 780, 900
    Kawasaki 1200

    .007-.008

    Polaris 700, 1050 Seadoo 951, 800 RFI

    4 Strokes

    .001-.0022

    Seadoo 112 (N/A)

    .002-.004

    Seadoo 113 (S/C)

    .002-.003

    Yamaha 408, 410, 411

    .0015-.0025

    Kawasaki 213, 214

    .0005-.0015

    Honda 600, 601



    Table 2: Ring End Gap

    Clearance/Tolerance

    Application

    2 Strokes

     

    .011 +/- .003

    Kawasaki 1100

    .012 +/- .002

    Seadoo 800

    .012+/- .004

    Kawasaki 440, 550, 650
    Yamaha 500, 650, 701, 760, 1100, 1200, 800,1200pv
    Tigershark 640, 770, 1000

    .013 +/- .003

    Seadoo 580, 650, 720
    Kawasaki 750, 900, 1200

    .013 +/- .005

    Polaris 650, 700, 750, 780

    .014 +/- .004

    Polaris 900, 1050

    .019 +/- .001

    Tigershark 900

    .022 +/- .003

    Seadoo 951/DI

    4 Strokes

     

    .015-.021

    Yamaha FX Top Ring

    .019-.027

    Yamaha FX Middle Ring

    .011-.023

    Yamaha FX Oil Ring

    .013-.017

    Yamaha VX/FXHO Top Ring

    .017-.023

    Yamaha VX/FXHO Middle Ring

    .004-.014

    Yamaha VX/FXHO Oil Ring

    .006-.014

    Seadoo Top Ring/Middle Ring

    .006-.012

    Seadoo Oil Ring

    .010-.016

    Kawasaki Top Ring

    .016-.022

    Kawasaki Middle Ring

    .016-.023

    Kawasaki Oil Ring

    .007-.013

    Honda Top Ring

    .016-.022

    Honda Middle Ring

    .010-.030

    Honda Oil Ring


    Table 3: Piston Arrow Direction

     

     

    Make

    Engine

    Marking

    Position

    Seadoo

    All

    Arrow

    Towards exhaust

    Kawasaki

    All (except 4-stroke)

    Arrow

    Towards Exhaust

    Kawasaki

    4-strokes

    Dot

    Towards exhaust

    Polaris

    650, 750, 780

    Arrow

    Towards front

    Polaris

    700, 900, 1050

    Arrow

    Towards exhaust

    Yamaha

    500

    UP

    Towards front

    Yamaha

    All others

    Arrow

    Towards exhaust

    Tigershark

    640, 1000

    Arrow

    Towards exhaust

    Tigershark

    770, 900

    Dot

    Towards exhaust

    Honda

    4-strokes

    In

    On the intake side