Is there an issue with pre ignition when fitting the SC12 on a 1275?

Everyone also said putting a supercharger on an engine build in 1969 would last 5mins let alone the four years ihave been running it.

In 1900, Gottlieb Daimler, of Daimler-Benz (Daimler AG), was the first to patent a forced-induction system for internal combustion engines, superchargers based the twin-rotor air-pump design, first patented by the American Francis Roots in 1860, the basic design for the modern Roots type supercharger.

The first supercharged cars were introduced at the 1921 Berlin Motor Show: the 6/20 hp and 10/35 hp Mercedes. These cars went into production in 1923 as the 6/25/40 hp (regarded as the first supercharged road car[2]) and 10/40/65 hp.[3] These were normal road cars as other supercharged cars at same time were almost all racing cars, including the 1923 Fiat 805-405, 1923 Miller 122[4] 1924 Alfa Romeo P2, 1924 Sunbeam,[5] 1925 Delage,[6] and the 1926 Bugatti Type 35C. At the end of the 1920s, Bentley made a supercharged version of the Bentley 4½ Litre road car. Since then, superchargers (and turbochargers) have been widely applied to racing and production cars, although the supercharger's technological complexity and cost have largely limited it to expensive, high-performance cars.

But the car only does about 2k a year. I would suggest that as long as your not on it all of the time the engine has chance to splash a bit of oil back on the bores... Time will tell.

ha! did you remind them that superchargers were put on various cars from the factory in the 1920's

Completely standard, normal old 998.

That setup has now been removed and replaced with a draw though SC12. The standard engine underneath still wont die.

Clean oil, not too much advance, plenty of fuel and a water injection system keep it alive. . .