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Nikasil Replating, Cylinder renewal, Cylinder boring, Big Bores
Preparation of NIKASIL coatings, cylinder boring, repair of car and motorcycle engine cylinders!
Replating and honing of single and multi-cylinder, 4-stroke and 2-stroke engines, in-line 4, V8, V12 cylinders, cylinder blocks. Standard size, OEM quality, in two-stroke engines, the ports do not need to be reworked, the cylinder can be used immediately. On request special piston-cylinder clearance is possible! Overboring, larger capacity engines are also possible with NIKASIL! More horsepower - more torque! If necessary, we also provide pistons in the required size.
In-line, four-cylinder engine
Honda CBR1000RR
Longitudinal grooves were formed in all four cylinders. The factory nikasil layer was chemically removed, then a multi-stage electroplating process was used to create the required coating on the surface. Oil consumption stopped, performance increased above the original value.
Two-stroke engine
Yamaha YZ250
The engine suffered a ring failure and not only the coating was damaged, but also the supporting aluminum. After the nikasil was removed, the missing material was repaired by welding and then nikasiled again. Its durability is the same as without welding.
Two-stroke engine
Suzuki RM250
There were no extra failures with this cylinder, only the coating was worn. The picture shows the condition before and after the repair. On the repaired part of the image, the honing grooves are clearly visible, which are essential because of the oil retention.
V12 engine block
BMW 850CSi
A special engine block, as only 1,510 of them were produced. The inside of the cylinders (as is often the case with alusil blocks) became striped, which increased oil consumption and reduced performance. With this process alusil blocks can also be repaired.
Nikasil
How the coating is built
The German Mahle patented this surface coating system. Nickel is electroplated on the cylinder wall, into which approx. 4 micron silicon carbide (SiC) grains are embedded. The thickness of the layer formed in this way is approx. 0.2 mm. Its wear resistance is superior to that of chrome, but it is flexible and not prone to cracking, so it is reliable even at very high speeds.