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Modified starter and alternator

The R-Box BMW has a lot of electrical features that need a lot of electrical power. This means that we need to use an upgraded alternator.

We are going to use a Denso style 155A version from Luke Motorsport. The pulley has been decreased to 60mm so the ratio becomes 1:1.6 with the cranck shaft pulley

This ratio gives us already sufficient charging current at idle speed.

Overdimensioned bearings allow >14.000rpm for the alternator.

The starter has also been boosted to 2KW to deal with the higher compression of the modified S14.

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