Originally Posted By LSP
Originally Posted By WH23H6
Yea... Ive been told that its too much oil pressure..... robs HP... now go ask how much Oil pressure a pro mod runs.... they have shut offs if it drops below 160 PSI.... I'll eat the HP to save this engine.... smile

Some racers search for every avenue of HP savings... and I can't argue that, but at the end of the day... too much Oil pressure never hurt an any engine... but not enough has hurts lots!


Sounds like you're not in a situation where you're looking for every last hp, so why the vacuum pump?

Those swinging pick ups tend to not be 100% air tite, so unless you're sure the oil level keeps it submerged at ALL times, might be something to look at.

Im not looking to squeeze everything out of this combo... its a big inch motor that shifts at 6800 max and spins at 7000 max. It will go 7600 with ease but like everything, tighter you wind the elastic, more chance that it snaps smile The vacuum pump is needed because it does have a very low drag ring combo. The engine will run fine (idling) without it... but will probably tend to want to pass some oil without the help of the vacuum pump to keep the rings tight. Passed oil = detonation = cracked piston pin bosses ect...