The year 1972 represented the beginning of the NSU era, for Spiess.
With professional competence, Spiess attended to the 4-cylinder injection engines,
the1,000cc engine of the NSU TTS and the 1,300cc power unit of the NSU TT. The
latter featured as peculiarity a double ignition with two spark plugs per cylinder.
In those days, building up an NSU engine and making it ready to race was a time-consuming
activity, involving a lot of manual work. Spiess had to farm out the production
of many components as they didn't possess all the manufacturing devices themselves,
in those days. Quite obviously, this situation resulted in the risk of an easy
technology transfer. Hence, the want to execute as many works on the NSU engines
as possible in house increased all the time. Already then, the NSU engines featured
an extraordinary reliability and an extensive usable speed range. Thanks to
their better driveability, the racing engines from Ditzingen prevailed although
their competitors featured a higher horse-power output, every now and then.
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Precision components or the refinement of existing components, single copy or small-batch series, solid material or cast material – a diversified service range thanks to an ambitious mix of know-how and new developments.
Out there on the racetrack, the smallest mistake can be crucial. Therefore, special emphasis is placed to a gapless and absolutely precise quality control. No part will be installed without having been subjected to an extremely strict examination.
Here, the process represented by development and design, production and manufacturing comes full circle. On the test rigs, the components or the entire project have to definitively demonstrate if they meet the highest standards.