[prandelia]

Well hell, might as well just turn this into a "how have you tried to address oil pressure for race cars" thread.....I'm using the OE/OBD sensor for oil temp., so I know that's fine, but I've attached an oil pressure trace from my local track. As you can see, they are rock solid when the car is pointed straight, but in heavy brake zones and high-load corners, you can see how big the oil pressure swings in this car. Looks like some amount of potential pump cavitation or starving going on, because it's not from oil temps, the temps are perfect. While the graph looks bad, the actual numbers aren't too bad. There are a few corners where I would def. like to see another 20psi for sure though. Hence, why I am trying to figure out how accurate these pressures are. Comparing them to what I've seen from others who use the galley port, and lower weight oil, mine seem inline, as I would naturally be higher due to the heavier oil weight.

My car already has the V2 Moroso baffle (which is actually a solid design and a lot like TMG's), 5W40 oil, Oil cooler.....but I think the big swings are being driven by a few things:

1. Given our pump is RPM dependent, naturally when you jump off the gas and on the brakes, the oil pressure readings will plummet.
2. Boxer motors inherently oil starve due to design on high g-loads as the heads don't allow for oil to drain back fast enough
3. High oil temps and too low of viscosity grade used (or more rare, too high viscosity).

I recently spoke to TMG Europe about their switch from 10W60 to 5W50, and they stated it was to help lower oil temps, and free up some HP via lighter oil viscosity. It seems they feel the sweet spot for pressure/temps/protection is using a XW50 oil. I actually plan on trying 10W50 to see how that affects pressures. Anybody else using a 50 oil?