Number one reason is to make horsepower and that is acheived because the vacuum pump creates a vacuum in the crankcase to help keep the oil off of the cylinder walls and out of the combustion chambers. This decreases the possibility of detonation caused by oil contamination in the combustion chambers.

On streetcars, a vacuum pump is highly effective and certainly, you make more power. However, there is minor, routine service maintenance that needs be adhered to in order to make these systems “daily driver friendly”.

Since vacuum pumps also reduce drastically the amount of “blow by” many end users use them to stop/reduce excessive oil consumption issues. However, using a pump to control "blow by" is generally not a good choice - addressing the root cause of the oil consumption is the long term cure


Charlie

 

Oh I know, I just asked more for sarcastic reasons because the other guy didn't really know what he was talking about. BTW, the vaccum pump setup shown in post #1 will work on f bods.

 

well do one then report back they are not daily driver friendly. We will see who knows what.