yeah, you're probably right, the difference between the two ideas probably isn't worth worrying about.zok15 wrote: ↑Mon Apr 17, 2023 12:06 pm I think it will be negligible either way really, I don't think my solution would really have better de-aeration, and I think the return to the pan one way vs the other will be pretty negligible as well. I think removing oil from the crank will be good regardless.
additional pan volume would be nice, however, there are a few factors working against me, as mentioned earlier, I really don't want to make the car harder to work on, to expand the pan forwards, will make begin moving the pan in the way of the oil filter, and make starter removal and replacement difficult,
Expanding rearwards gets the sump closer to the axle shaft, while not a maintenance and repair issue, if the car breaks an axle, the probability of damaging the oil pan becomes higher. which I'm also not wild about.
Going deeper gets the pan below the subframe, which I absolutely will not do,
there's trans/flywheel interference going to the driver's side, and then there's mount interference going to the passenger side.
I'm not opposed to exploring the idea, it's just difficult due to the packaging constraints imposed by the vehicle.
on the one hand, increasing volume will reduce pressure with the same oil volume, and with additional oil volume, residence time will be increased and de-aeration improved as long as the windage tray and crank scraper are effective. On the other hand, making the sump larger front to back increases the need for pan baffling to prevent oil from sloshing away from the pickup. I've been giving a ton of consideration to baffling, and the benefits are also the downsides, a baffle restricts the slosh of the oil in the pan, but a poorly designed baffle can also prevent oil from flowing to the pickup. I feel like this problem is made worse with a flatter, wider pan, than a taller, narrower pan.
trap doors could do a good job of baffling the sump, along with minimizing restriction of oil flow to the pickup, but that can also get really tricky to fit in the pan in a reasonable manner.
I've actually been considering the idea of a secondary "windage tray" that would sit at the surface of the oil, that way for the oil to slosh away from the pickup, it also has to go through that tray as well. something with a large enough perimeter clearance, that the oil flows past without issue, that said, I need to put a dipstick in the block and see how far below the windage tray the factory fill level would sit, it might be very close already.