As you probably know, PowerSeal has been around for 30 years. PowerSeal initially started with NiKaSil coatings on motorcycles. The reason for this was simple. I, as the owner, am a motorcyclist myself. So I have the same hobby as my customers.
In addition to sport motorcycle cylinders, orders for old-timers from both motorbikes and cars soon came.
The old-timer cylinders or car engine blocks, however, are usually made of steel or cast iron and are not originally coated, but are due for revision because the last bore size has been reached.
The solution to this problem can be a new sleeve or a PowerSeal NiKaSil layer that brings the cylinder back to its original size.

However, to put a NiKaSil layer on these cylinders this requires a different preparation and pre-treatment of the cylinder than the standard aluminum ones due to the adhesion of NiKaSil to cast iron or steel.

The advantage is that the NiKaSil coating hardly wear out and the cylinder runs much quieter and nicer and therefore has more performance.

The disadvantage with this type of cylinder is that if the layer must be removed again later, this requires more time, because removing NiKaSil from steel or cast iron is a time-consuming operation.

10 years ago, PowerSeal started to process Young-timer car engines and cylinders. These so-called Young-timers usually have standard aluminum cylinders or engine block with a Alusil coating.
Alusil is made by bringing silicon carbides into the top layer of the cylinder during the casting process

If this layer is worn or damaged, PowerSeal can apply a NiKaSil layer on it.
This means that most damage can be eliminated and a better and harder layer is applied.

The advantage lies in the fact that the layer is harder than the original Alusil layer and that most of the damage is gone.
The disadvantage is that NiKaSil is a harder layer, so you must use harder or different piston rings. Also, all specs regarding to final clearance and piston tolerances must be checked.

This literally requires a change in assembly and handling of these newly machined and coated cylinders or engine blocks.
PowerSeal recommends that the new piston rings be Titan nitrated to create better running properties.
In addition to the NiKaSil layer of these car engines and cylinders, Powerseal has also been able to restore the original Alusil by re-opening the pockets in the Alusil through a very special process. As a result, the oil-bearing capacity is restored and the Alusil layer is up to date again.
The advantage is that the costs are lower than a NiKaSil treatment and the original coating is spared.
The disadvantage is that if the damage is too heavy, this treatment is not sufficient enough.

In some cases, we can hone to oversize. Pistons must be fitted.
The conclusion is that whatever the problem is with any cylinder or engine block, damaged or worn, with Alusil or NiKaSil, aluminum or cast iron, PowerSeal has a solution for it.