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is anybody using an oil pressure limiter on a v-2?
i had some oil showing up at the impeller inlet recently. pressure on the ls1 seems low compared to e.g. an ls7, but i dont really know what max pressure i have as i cant log it. (i have better things to do at max rpm than look at the gage and i doubt its accuracy.)
after observing the oil pressure gage a few times im surprised it only shows around 48 psi* at wot on top (5-40 oil). can that press oil throught the seals?
I will repeat. It is physically impossible for oil from inside the blower to get to the inducer of the impeller.
There is just no route oil could possibly take to get there.
So exactly where are you seeing this oil ? And by nature of the oil jet that squirts the oil between the gears on the blower or at the gears, it will never see any real pressure within the blower itself anyway. Overall they're a splash fed unit in design.
after 2 years of operation i discovered a very small puddle at the bottom of the inlet. this is new. i cleaned it and will be checking if it occurs again.
"physically impossible": there is an impeller shaft seal, no? please explain why its impossible. because of the fast rotation? (i never took such a unit appart, just looking at pictures.)
Yes there is oil inside the gearcase. Yes oil potentially could get to the back of the impeller, and then to the compressor discharge as it rotates. But for the oil to get to the inlet of the blower, it would be like the oil trying to climb Everest with a hurricane and gravity blowing it back down.
It just cannot happen. Everything in physics is preventing it.
So oil anywhere else in the blower may be possible, but at the blower intake is the least likely place the oil could ever reach
Very strange
the only seal in this area is behind the wheel for the shaft. Any oil that does get past it, will get flung out the back of the impeller towards the volute. There is no possible way this oil could ever make it back to the inlet.
And the impeller is a press fit on the shaft, there is no way the oil could find it's way down that shaft...again, because everything is wanting to fling any oil outwards towards the volute.
if there is a jet spraying the gears (maybe 1mm, no idea) its clear the case will be almost empty, as the drain is orders of magnitude larger. (i kind of thought the case might be filled with oil.) the centripetal effect is very clear also.
but the vendor responded right away with the suggestion of the regulator, as if this was a common issue. i wonder what pressure it regulates to. i also wonder what the v2 would be doing on the ls7 with its oil pressure approaching 90 psi max.
(btw, after paying attention to the oil pressure gage, im really worried its only 50 psi max at 6500 on the ls1.)
I don't have one to measure, but I think 1mm sounds small, might be more like 2mm.
But yes, the drain should be able to flow far more than the jet ever supplies
50psi is fine. If pressure is repeatable and stable, with no large unexpected changes, and of course filter etc shows clean, there's nothing to worry about.
v-2 pressure limiting
