$26.95

Sea-Doo Piston Ring Set 657/657X XP/GTX/SPX 1993 1994 1995

Sea-Doo Piston Ring Set 657/657X XP/GTX/SPX 1993 1994 1995
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$26.95

Brand: SBT
SKU #: 700SB109
Shipping Weight: 0.50 pounds
Quantity in Basket: None

1993 Sea-Doo XP Rings

1994 Sea-Doo GTX Rings
1994 Sea-Doo SPX Rings
1994 Sea-Doo XP Rings

1995 Sea-Doo GTX Rings
1995 Sea-Doo SPX Rings
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