![]() ![]() ilmor did a trick with berrylium so it appers ( but not confirmed ) they since 1998 always ran smaller bore / bigger stroke than other top teams and had better midrange torque but thanks to pistons out of berrylium they nevertheless were able to run the same rpms and power levels like e.g ferrari. Īnother aspect was - a larger stroke physically helps in midrange torque but limits top end power since piston speeds vs material strenght set a limitation on this. The downside of this was physically a problem to reach a high compression ratio and to maintain a good combustion. ![]() ![]() Generally there was a battle for revs at that times so we saw all engines a bigger and bigger bore and a shorter and shorter stroke from the given displacement in early 2000,s. The internal dimensions were a state secret at the racing times of these engines, now we have some more insight, but not at at all the details. ![]()
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