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Harley-Davidson Dual 10mm Spark Plug Head
The right way to convert a cylinder heads to twin plug!
The jig that is generally available to Harley-Davidson workshops and tuners, used to convert Harley-Davidson heads to a twin spark plug set up does not provide the best solution. Whilst this promises a performance increase, the end result is not the best regarding plug position in relation to the flame …
Serdi 100
CHS Seat Cutting on Formula One Standard Equipment. The Serdi Systems were the first valve seat cutting equipment capable of producing the degree of valve seat accuracy required in today’s formula one racing engines and is widely used by a number of racing teams and leading manufacturers.
Although now superseded by the Serdi 5 & 7, the Serdi 100 remains the …
Triumph Twin Head Repair
A recent article about the repair of a classic Triumph Twin cylinder head, here.
Triumph 8 stud heads have always had a reputation for cracking due to their method of production. The heads had cone shaped cast in seats which meant they did not fall out but that they caused this cracking.
The Cylinder Head Shop has worked to develop a fix …
