Parity Review Has Been Called

[V8 Fireworks]

Originally Posted by bluesport

Parity questions quashed.

https://www.v8sleuth.com.au/parity-q...hange-quashed/

Sounds right, though Edwards doesn't address the issue of potential differences in windage and aeration in the crankcase.

Honda found Formula One engines to be extremely sensitive to the percentage of oil aeration in the scavenge pumps, with reduction in parasitic loss (and thus gain in power: non-trivial of the order of up to 5-10hp) found from keeping the pumps operating at exactly the optimal level of oil aeration. Having the optimal amount of vacuum in the dry sump crankcase also affected the power output according to Honda's research papers.

(Honda developed an elaborate system of multiple pumps with bypass & deliberate aeration etc, to ensure the scavenge pumps operated at the optimal level of oil aeration regardless of circuit characteristics.)