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4-Stroke Head repair
Before and after pictures of our rebuild heads. See links below for more info
1. Valve guides and seats are removed.
2. Heads are TIG welded.
3. Valve guides and seats are replaced with AMPCO® 45 (a high strength nickel-aluminium bronze alloy). AMPCO® 45 transfers heat better than factory valve seats, Has better wear qualities and reduces wear on the valve face, Is compatible with Stainless steel and titanium valves.
4. Combustion chamber is CNC machined back to factory dimensions using a Centroid CNC head porting machine. Spark plug hole is re-threaded
5. Valve seats are re-machined using a Newen CNC valve seat cutting machine.
Click here to see a video of the Centroid CNC head porting machine
Click here to read about the Centroid CNC head porting machine
here is a quote from www.stockcarracing.com "Until just a few years ago, the Serdi was often seen as the state-of-the-art machine and was most used by the top pro racing shops. These days, there is a new player on the block when it comes to generating high-tech seat designs-the single-point-tool CNC Newen machine"
Click here to read the article about the Newen CNC valve seat cutting machine on stockcarracing.com