Turbo & Temp: Porsche 930 & Seiko Sampachi

Wednesday, April 15, 2026

Sure, a combustion-engine works without a turbo-charger, but once you have used it you dont want to drive a car without it anymore. Although, not to the same extent but his is true for a petrol- and diesel-engine alike.

Sure, a watch-movement works without any form of temperature-compensation, but once you have used it you dont want to drive a watch without it anymore. Although, not to the same extent but his is true for a mechanical and electronic watch alike (*klikk).

Both, the turbo-charger and the temperature-compensation change the output-efficiency of their respective devices significantly: the engine is creating substantially more power per fuel-unit and the watch is increasing the precision by magnitudes. The first serially used turbo-charger was the 1974-presented Porsche 930, a 911 with a game-changing engine plus exposed rear-axle-widebody to increase track-stability and esp cover the wide-tires (german: Walzen), that were necessary to get the power applied to the road. A novelty and innovative lead-position in the car-industry from the manufacturer from Zuffenhausen, Germany, that was just applied to a very few of the already rare Porsche 911. Needless to say, the so upgraded 930 was their top-product by far; made in remarkably low quantities and having the by-far highest price: Porsche 911 Superior.

One year before in 1973 it was Seiko (Epson) that used the first electronic temperature-compensation-component that changed the efficiency (ie. accuracy) of their quartzmovement significantly. The cal38 (Sampachi-quartz) was in many aspects a horological milestone and "first volume-production quartz-movement family from Seiko" (*klikk) and just very few of these were equipped with the thermistor, the electronic-component that applied analogue thermo-comensation. The earlier ones were the Very Fine Adjusted (V.F.A.) Sampachi-Quartz cal3820 & cal3823: guaranteed precise to less than 5 seconds per month, or less than 1 minute per year. Guaranteed in real-world application. Presented in a hand-hammered widebody-case as well and so not just an optical analogy but also a technological: A novelty and innovative lead-position in the watch-industry from the manufacturer from Ginza, Japan, that was just applied to a very few of the already rare Seiko Quartz Sampachi. Needless to say, the so upgraded cal38 V.F.A. (and from 1974 onwards also the 3883 Superior: *klikk) was their top-product by far; made in remarkably low quantities and having the by-far highest price: Seiko Sampachi Superior.

NB: Both the wide Porsche body-parts (at least in the first two years of production) and the Seiko watch-case were completely made by hand: manufactured in the essence of the word.