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LMP2 Cooling System Update
Submitted by Berny Herrera on Monday, September 25, 2006 - 3:10pm

RotaryNews.Com followed up with B-K motorsports on the recent cooling system upgrades to the LMP2 car, and the following was their kind response to our enquiry.

The main change came from the need for a higher effiency water pump since testing had shown that other methods showed cavitation. This basically means the pump was not working and not removing the hot water from the engine. It also had to fit within the existing space and preferably be lighter than the previous pump. Andrew our crew chief had previously worked with engine design in SCCA and prior to this IRL. We first worked on a suitable housing we could package to the existing R20B housings and then we worked with the pump designer for the correct impeller for our application. Testing showed the pump was 30% more efficient. It was also 50% lighter which is always nice when your building a race car. The system was also optimised with a new twin radiator design coupled to a oil to water heat exhanger matched to our heat rejection requirements. This style of system is proven in racing and part of this design was used with Mazdas R26B (4-rotor) engine that won Le Mans.

Marcus Haselgrove B.Eng(HONS.DIS.AMIMechE)
Technical Director / Team Manager
BK Motorsports
Saukville, WI53080

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