Scratched and Damaged Porsche ALUSIL® and NIKASIL® Blocks and Cylinders Repaired

We service the Porsche 928, 944 and 951. Others by request.

TOP QUALITY: 928 Motorsports is a dealer for the US Chrome NiCom® repair system for Alusil and Nikasil blocks. Their NiCom® facility is literally just minutes up the street from our offices, providing the best service (ISO 9002 certified) you can get on your engine cylinders and blocks.

Now, scratched cylinder walls - even deep scratches - do not have to be the end of your engine. We can weld them up, bore them out, NiCom® plate them, and hone them to final size. The finished cylinder wall is harder than the original, and will last longer.

WHAT IT IS: The US Chrome process is trademarked as "NiCom®", (because Porsche holds the trademark on the term "Nikasil®") , but the process was brought over from the Mahle plant in Stuttgart and is identical to the quality and finish that Mahle performs for Porsche on its OEM engines. There are a few other platers in the US that have an aluminum block plating process, but they do not deposit the density of 2 micron-sized carbide particles as NiCom® does, and the end result is inferior.

NiCom® is an electroplated nickel matrix with silicon carbide particles uniformly dispersed throughout. The carbide is extremely hard, but not abrasive because of its minute particle size, which averages two microns. The inclusion of these dense ceramic particles raises the hardness of the composite and provides unique properties, particularly when plated on aluminum. NiCom® has been found to be so effective that leading manufacturers (General Motors, Mercury, Harley-Davidson, Kawasaki, and others - see pictures below) are now using it on new cylinders as well as repairs.

Adding NiCom plating to your Alusil block provides:

• SUPERIOR WEAR RESISTANCE - usually two to ten times that of chromium
• EXCELLENT FRICTIONAL CHARACTERISTICS - less tendency to gall or seize
• EXCEPTIONAL OIL RETENTION - due to the olephyllic nature of silicon carbide
• GREATER THICKNESS - up to .015 are possible as compared to the normal range of .003 - .004
• HIGH TEMPERATURE RESISTANCE - heat transfer for continuous service
• GREATER RESISTANCE to scratching and abrasion that Alusil

OUR BLOCK REPAIR/PLATING SERVICE:

• Ship your bare block to us at 928 Motorsports, LLC. Prepare your block by removing all the steel from it, like locating pins and head studs. Send just the bare block, no crank or rods installed. If there are steel parts in the block that you cannot remove, they will be removed for you but you will be charged extra for this service. The block does not have to be clean.
• Let us know what your plan for Pistons is. We can repair the scratched cylinder wall and return it back to OEM condition if you like for use with stock pistons, or we can bore your block out for use with less expensive, readily-available aftermarket forged pistons. We will mic out the bores of each cylinder, and work with you to select the boring (standard size, or oversized) that you want for your application.
• The price in this listing covers the standard 4-part process: 1) strip/clean the block with a series of baths in acids and cleansers and washes. This also etches the block for optimum adhesion of the plating. 2) Bore the block to your specs for the finished piston size you select. 3) NiCom plate the bores, and 4) Hone the cylinder walls with 10-bit diamond hones to your finished size. The special hone we use also leaves an excellent surface for oil cling to the cylinder walls - reducing friction and increasing engine life. If scratches are deep, the scratches will need to be filled in before boring by welding them up - and this will bring an extra charge with it.

Even deep scratches like these in this 928 block can be repaired. Click to Enlarge	The 928 cylinders after NiCom plating and honing. Click to Enlarge
This 928 motor is ready to ship. After etching, the finished block will have a dull matte finish. This customer painted his. Click to Enlarge	GM sends all the Corvette CF-r Race engines here to have the very same NiCom plating... Click to Enlarge
Harley-Davidson Racing cylinders ready to be NiCom plated.... Click to Enlarge	Mercury Marine Racing has all their motors NiCom plated... Click to Enlarge
The US Chrome plant and the process is ISO 9002 certified! Quality assured! Click to Enlarge	This picture of the plant shows the row of clean/rinse/etch wash tanks in the center Click to Enlarge
This DART Racing block is out of the etching vats and ready to be NiCom plated. Notice the rubber plugs used to avoid plating inside the lifter bores. On 928 and 944 motors, a coating is also used to prevent the depositing of NiCom material in our Crankshaft Main Bearing areas Click to Enlarge	Three of the many NiCom electro-plating vats Click to Enlarge
The special instructions for your engine travel with your block through the factory every step of the way...	This is the special 10-bit diamond hone that will be used on your Porsche engine. Common honing bits are 6 or 8-bit units. This 10-bit unit will produce a bore that is more perfectly cylindrical than others. Click to Enlarge
Here is the Tech using the Sunnun honing machine to put the finish hone on the NiCom plated block. Click to Enlarge	After a few passes, he checks for finished bore size to spec. Click to Enlarge