VHM 12º Kolben KTM SX 65 09-24 Husqvarna TC 65 17-24 Gas Gas MC 65 21-24
Details
https://www.greenlandmx.eu/de/vhm-12%C2%BA-kolben-ktm-sx-65-09-24-husqvarna-tc-65-17-24-gas-gas-mc-65-21-24/APKT06521722-P.html
VHM 12º Kolben KTM SX 65 09-24 Husqvarna TC 65 17-24 Gas Gas MC 65 21-24
VHM 12º Kolben
Dieser 12º VHM Kolben ist speziell für die maximale Leistungssteigerung entwickelt.
- Muss mit einem VHM 12º Einsatz und einem VHM Kopf verwendet werden.
- 100% CNC gefertigt aus hochwertigem Material und hat ein nicht-kreisförmiges Profil, stehen für hohe Leistung und Langlebigkeit !
- Verwendung in Kombination mit VHM einfügen AE32167-059 und VHM AA33112.
*Dieser Kolben benötigt ein Mindestspiel von 0,04 mm und ein Höchstspiel von 0,05 mm. IMMER DEN ZYLINDERDURCHMESSER PRÜFEN, einige neue SX65-Motoren haben einen Innendurchmesser von Ø45,03 und benötigen daher einen Kolben von Ø44,99. Muss in Kombination mit VHM 12°-Zylinderkopf und -Kopf verwendet werden.*
| Marken | VHM |
| Modalität | Cross/Enduro |
| Primärmaterial | Aluminium |
HOW TO MEASSURE ANY DIRT BIKE´S PISTONS
The pistons of any internal combustion engine, two or four-stroke, are conical and oval, to control its expansion in its operation. To get to know your maximum measurement you have to measure at 10-12 mm. of the skirt, in the opposite part to the bolt.
When we see a mark on the head of the piston, for example, 80 mm. or we have a cylinder of 80 mm. this measure is corresponds to the cylinder, when meassuing the piston we will see that actually measurement is 79.95 mm., the tolerance between piston and cylinder would be 5 cents (0.05 mm.).
In the aluminum cylinders with hard chrome interior treatment, already in disuse, or NIKASIL the measure of 80 mm. It is usually fixed to 80 mm.
The pistons work with tolerances between 4 to 6 hundredths (0.04-0.06) for two-stroke engines and 3 to 4 hundredths for four-stroke engines (0.03-0.04). To fix a deformed cylinder, the interior of the cylinder shall be polished first and the measurement is adjusted with pistons that are over-measured for this purpose, marked with letters A-B-C-D (selection); the lowest measure being A, increasing 1 hundredth per letter; that is, selection B 0.01 mm. greater than A, C 0.02 mm. greater than A, etc.
EXAMPLES
New Cylinder Ø 80.00 mm. mounts a piston of Ø 79,97 A Factory Tolerance 0.03 mm.
Polished Cylinder Ø 80,01 mm. mounts a piston Ø 79,98 B Factory Tolerance 0,03 mm.
Polished Cylinder Ø 80,02 mm. mounts a piston Ø 79,99 C Factory Tolerance 0,03 mm.
Polished Cylinder Ø 80,03 mm. mounts a piston Ø 80,00 D Factory Tolerance 0,03 mm.
The important thing is to maintain the tolerance, which the manufacturer recommends, between cylinder and piston.
