i was just reading a car magazine about a ferrari's engine dohc 4..5L v8 562hp(Revs to 9000rpm) . anyways they were saying that they run 3 eletric pumps scavenge pumps on the engine that both return oil to the reservoir and also better equalize the air pressure between the cylinder banks to reduce pumping losses due to " Windage' or air movement inside the block caused by Piston motion, Now farrari claims that Windage motion creats losses of 7torque to the motor.


Now most vtec motors rev over 8000rpm's, Does anyone know if Honda motors suffer from "Windage" due to cylinder motion at such High Rpms like the Ferrari motor??

Or is it because the ferria's motor is a v8 as in block design?

 

i know on some setups ppl acualy gained a 1-3 whp from a good pvc install over stock .. well i read this at least it could be a dyno varience for all i know .. i would imagin that all motors would have a pcv issue , but on stock motors its not a issue as it is on a modded higher horse motor

 

Those Ferraris use a dry sump oil system. Do some google searching to understand how they work.

Hondas do suffer from positive crankcase pressure, especially with higher RPM's and/or increases in cylinder pressure (forced induction, etc). There is a decent discussion right now in the FI forum about using exhaust slash-cuts to draw a vacuum on the crankcase. Reducing the pressure in the crankcase allows for the piston to travel with less resistance during the intake stroke and power stroke, so there are potential gains.

Some V8's (Ford/GM) came with electric vacuum pumps attached to the crankcase for this very reason.

 

would this cure odd oil consumption?

 

Catch can setups on large HP Honda motors does infact help with oil loss

 

All reciprocating internal combustion engines do, to some degree. It is an artifact of having the crank and rods move through space that is also used by the oiling system. Windage trays, crank scrapers, dry sumps, etc. are all methods of mitigating the effects of windage.