While looking for some background information on race diesel engines, I found some interesting articles:
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TDI vs. T-FSI: a comparison of possible powerplants for Le Mans (not so technical correct, I think, aspecially the claim that a diesel could produce more horsepower under the current LMP1 engine regulation)
* 2 (very interesting) articles by Perkins Engine Company on the Taurus diesel car:
24 Heures du Mans, 2004 and
Silverstone 1000km LMES race - August 2004
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Racecar Engineering article