Porsche and BMW have voiced considerations over the reliability of the high-voltage factor of the one-make LMDh hybrid system going into this weekend’s Daytona 24 Hours.
Their apprehension follows a spate of points which have LMDh equipment and compelled components to be modified over the course of the pre-event Roar check final weekend and the opening two days of the IMSA SportsCar Championship curtain-raiser at Daytona this week.
BMW M Motorsport boss Andreas Roos described the issues, which prevented the #25 Rahal M Hybrid V8 for setting a qualifying time on Thursday, as “a little bit of concern”.
“Clearly it isn’t what you wish to have in qualifying that the automobile stops on monitor,” he stated.
“On the finish you at all times really feel higher when there isn’t any challenge in any respect taking place in observe and testing.”
Porsche 963 programme boss Urs Kuratle stated: “I hope it isn’t a pandemic.
“I do not know the overall variety of modified batteries but it surely’s positively too many, that is for certain.
“From the reliability viewpoint, it seems like we did a step backwards in comparison with final 12 months.”
#25 BMW M Group RLL BMW M Hybrid V8: Marco Wittmann, Sheldon Van Der Linde, Robin Frijns, Rene Rast
Picture by: Andreas Beil
Porsche Penske Motorsport managing director Jonathan Diuguid added that the problems meant that the German producer’s manufacturing unit staff is “not sitting right here with a pleasant fuzzy feeling concerning the race”.
Porsche revealed that on Friday afternoon it had met with representatives from the opposite LMDh producers, IMSA, and Bosch Motorsport and Fortescue Zero (previously WAE Applied sciences), which respectively produce the motor generator unit [MGU] and the high-voltage battery parts of the spec hybrid system.
Kuratle defined that there’s “an enormous push right here on the monitor and the house bases [of Bosch and Fortescue] again in Europe” to attempt to overcome the issues.
Diuguid added: “We’re doing the whole lot on our aspect to verify we perceive the issue and what we will management, making an attempt to work with the suppliers to get their enter and suggestions on what is likely to be inflicting the problem, making an attempt to tick as many containers as we will.”
The producers haven’t revealed what number of occurrences of the HV challenge there have been to date, however Diuguid acknowledged that in Porsche’s case it was “multiple”.
The primary seems to have been within the second session of the Roar final Friday when the #7 Porsche 963 LMDh stopped on monitor with Felipe Nasr on the wheel.
The client 963s run by JDC-Miller MotorSports and Proton Competitors are additionally understood to have run into HV points in the course of the Roar.
BMW is understood to have skilled HV points on each its Rahal-run vehicles, although it’s unclear whether or not Acura, Cadillac and Lamborghini have been .
Diuguid revealed that the problems had been “not at all times the identical downside”.
“It hasn’t been tracked again to a sure batch, a sure manufacturing run or a sure set of situations,” he stated
Kuratle careworn that the finger of blame shouldn’t be pointed on the battery.
“It’s tough to outline the battery, the place does it begin and the place does it end? It’s an HV challenge,” he defined.
It’s unclear why the hybrid points have arisen at this level as a result of the parts proved dependable of their second season of the GTP period in 2024.
Diuguid defined there have been no updates for the brand new season, however admitted that “there are small variances which can be regular”.
“There are some new items, a [different] manufacturing batch,” he stated.
IMSA has been contacted for a remark.
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