ITALKIT Top End Gasket Kit for YAMAHA YZ 80 1985-1992

The ITALKIT VJ990A086TP top end gasket kit is designed for YAMAHA YZ 80 from 1985 to 1992. The top end gasket kit brings together the gaskets to replace every time the cylinder head or cylinder comes off. A gasket crushed by tightening never gets its shape back: refitting it means risking a compression, coolant or oil leak, and having to strip everything down again.

Specifications

• Brand: ITALKIT
• Manufacturer part number: VJ990A086TP
• Engine: 2-stroke

When to replace it?

• Coolant or oil seeping at the head/cylinder or cylinder/crankcase joint.
• Coolant level dropping, bubbles in the radiator.
• Hissing or black marks where the exhaust leaves the cylinder.

At every piston change and every time the cylinder head or cylinder is removed, even for a simple inspection. Gaskets cost little compared with the work of stripping the engine.

Fitting tips

1. Clean the gasket faces without scratching them (plastic scraper, solvent): they must be clean, dry and free of burrs.
2. Fit the gaskets dry, without sealant, unless the workshop manual says otherwise.
3. Refit a base gasket of the same thickness as the old one, unless you are deliberately adjusting the squish.
4. Tighten the cylinder head in a criss-cross pattern, in several stages, up to the manufacturer's torque.
5. While it's apart, replace the spark plug and refill the coolant.
6. After break-in, check the torque with the engine cold and make sure there are no leaks.

Why ITALKIT?

ITALKIT is a Spanish manufacturer of engine parts for small-displacement machines: cylinders, pistons, crankshafts, reed valves and spare parts in several sizes. The brand is very active in 50cc racing, especially in Spain.

Spare parts and items to plan

• Piston : WISECO · PROX
• Piston rings : WOSSNER RSB4850 · WOSSNER RSB4750
• Spark plug : NGK 3530 · NGK 6801
• Coolant : LIQUI MOLY 1 L · TWIN AIR
• 2-stroke oil : LIQUI MOLY 1 L · LIQUI MOLY 4 L

Frequently asked questions

What does the kit contain?
Depends on the model. Compare with your original gaskets if in doubt.

Should I replace it along with the piston?
Yes: as soon as the cylinder head and cylinder are off, new gaskets go back on. It's the right time to fit a new piston kit and new rings if the engine has some hours on it.

Compatibility

Check the exact model and year of your bike in the list below before ordering.

Fits:
YAMAHA YZ 80 1992
YAMAHA YZ 80 1991
YAMAHA YZ 80 1990
YAMAHA YZ 80 1989
YAMAHA YZ 80 1988
YAMAHA YZ 80 1987
YAMAHA YZ 80 1986
YAMAHA YZ 80 1985