unW7WZ

I still trust the OMP to do its job. Also, thank you guys for actually doing some testing and figuring out what is truth from baloney. It's good to see that at least some of you are willing to do that [NZ, Hailers, Rotorman99, and whoever else deserves recognition].

HAILERS

1. The engine pump that supplys pressure to rotor bearings and the oil cooler etc, supplies NO pressure to the OMP at all. Pressure is the key word.

2. IF you blockoff three of the four OUTPUT lines on the OMP, and attach a gauge to the single output line left in place, then you'll see the pressure in THAT line increase with rpms. Remember, that line is deadended with the aftermarket oil pressure gauge. In my case a SunPro with nylon tubing that just fits inside a OMP output line.

3. But also remember this. If I had left the other three lines going to oil nozzles, I doubt I'd have seen doodley squat on the SunPro that was attached to that single line. The oil and pressure would have gone to the other three lines. That's why you can put your finger over a single output line and have no problem at all stopping the oil from coming out. It just finds the path of least resistance to go to. That would have been one of the other lines IF they had been connected to the OMP.

4. So, remember once more, I had common bolts stopping up the other three output ports on the OMP when I did this.

5. I was surprised at seeing the forty psi prior to the SunPro sensing line being blown out of the OMP output line. How high would it have gone? Got me. I just put the lines back on the OMP so I can drive the turbo car instead of the na.

6. By the way, I still had a open line connected to the NEW nipple I had installed into the OMP feed cavity, and no oil rose up that line when I had the engine at high revs. That's why I say the engine oil pump does not apply pressure on the OMP. None at all.

TitaniumTT

Once again, agree with everything you said

1) Yes, & when you described that to me on the other forum I went and pulled out my spare TII front cover and looked where you told me to look. It's being fed.. sorta. All the pressure, or at least a very good amount of it is being purged into the pan.

2) Rotaman tried that exact thing on a bench and running the OMP with a drill. He got ZERO pressure on the gauge. Infact, he was saying that the force from the gauge was pushing the oil back down the line. I'll take your real world test over his botched ramblings in a dungeon where good cars go to be tortured anyday of the week and twice on Sunday and becuase it is what it is, three times on Friday

3&4) OMP output if you will is common chamber so this follows logic and I agree. By stopping the other three you are getting the total output. However, it should be pointed out that if one line gets schmegged or kinked, no oil will flow through that line. Like you said - path of least resistance.

5) That actually surprised me too, but I think that kinda ends the debate of this turbo boost = no injection crap anyway you want to slice it.

6) So does the OMP rely on vacuum to pull the oil into the pump? It must if there is ZERO pressure there and the oil is basically resting there.

Hailers = definitive. Can this DIE NOW?

HAILERS

***************(6) So does the OMP rely on vacuum to pull the oil into the pump? It must if there is ZERO pressure there and the oil is basically resting there.************

The pump portion of the OMP sucks the oil out of the cavity, much like the engine oil pump sucks the oil out of the pan.

Both Titanium and Rotaman have your two stroke feed on the aft end of the pump on the rear cover. I drilled my feed like Patman???? into the cavity that gets filled by the engine. So I'm asking, what happen to that *device* on the inside of that cover where you welded the new feed pipe?? Did it somehow stay spot welded on the inside of the rear cover????

The Device is the pronged outfit on the inside of the rear cover, that seems to locate the cam if memory serves.

TitaniumTT

I bought the Real World solutions/Rotary Aviation piece and my motor has not even fired yet. The piece I build for rotoman, yes I drilled through the center of the cam retainer and TIG welded everything into one piece

RyoFC3S

iTrader: (1)

Sorry for the delayed reply...

Nothing was leaking externally.

I looked at the lines several times a day once I suspected the problem; most the time the lines would be empty, sometimes there would be a little oil in the lines. Also, I did a simple test of holding a screwdriver against the OMP and putting my ear up to it, and found that (as far as I could tell) it wasn't working.

Its an S5 TII.

My mechanic/good friend of mine took a look at it and confirmed my suspicions of a failing OMP. He was with me when I tested the compression and found the engine needed a transplant. Also, it was a while ago, but I'm almost positive he did some tests (i'm not exactly sure what exactly) on it before we tore the engine apart and confirmed it wasn't working properly. At the time I knew little to nothing about the OMP system.

rarson

I didn't see this mentioned, but the same friction that causes headloss is also causing a pressure increase by heating the fluid (friction causes heat). The net effect is that your volumetric flow rate drops from the headloss, your fluid heats up, and your pressure may drop a bit, not at all, or even increase.

And the pressure drop across an intercooler is primarily due to an increase in volume (and cooling the air), not headloss.

toplessFC3Sman

iTrader: (1)

i didnt mean a drop in pressure from inside the tube to inside the IC, i meant from tubing of a certain diameter on one side of the IC to tubing of the same diameter on the other, which is how the IC pressure drop is normally measured. No increase due to volume there, its all head losses through the IC

rarson

I'm assuming you mean information from YOU that is wrong. And as it's important to point out to other people who may be willing to actually use your bad advice, I will do just that:

Pop quiz: find the logic errors. If you said, "my entire argument is based on assumptions and a self-admittedly loose (and often, evidently completely non-existent) understanding of fluid dynamics as described by 'what makes sense to me' which in all probability isn't actually correct," then you win. The fact that you cannot twist your brain around a certain subject to understand it in no way precludes another person from having a full grasp on what they're talking about. The argument that something "makes sense to you" is not logical in any way, and is assuming that we give you the benefit of the doubt that you actually know a lot, when you've proven time and time again that you don't.

To quote Penn & Teller: "Reality is not democratic." We can all sit here and vote on how we think the OMP works, and it's not going to do a damn thing to change the reality of how it actually works.

It doesn't matter whether you're right or not. The fact is that you don't KNOW if you are or not, and yet you're using fallacy arguments to present your opinion as some kind of fact. If you want to interject your two-cents, fine, but do so with the understanding that you don't completely grasp the subject and all the "testing" that you've done.

In other words, pull your head out of your *** and stop presenting yourself as an expert. Anyone that knows you knows that your advice need be taken with a grain of salt. I'd even go so far as to say that you're "help" is consistently less than helpful, and sometimes harmful and dangerous.

PS- to anyone on the forum entertaining the notion of listening to his advice: I would consider it unwise to take the advice from a completely anonymous self-professed expert on all subjects, especially when said expert cannot even type in complete and understandable sentences. And sorry for the long-winded, off-topic post.

rarson

Sure, but there's still a pressure drop due to decreasing the temperature of the air, which is probably a lot more than the pressure drop due to headloss. Most air-to-air intercoolers do a pretty good job of dropping significant temperature.

But my point is that temperature is inextricably related to pressure, and vice versa. So to talk about one without the other when talking about friction and headloss is to forget almost half the equation.

TitaniumTT

& ima give it the ole' bumparoo since rotaman99 is posting in more OMP/premix threads under a different name - AllMotorRotor. For all people researching this topic, disregard any information given to you by rotaman99, AllMotorRotor or Viperdude. Not saying I am the end all be, just saying that anything that the previous three names posts should be either ignored or most certainly at the least double checked with a KNOWLEDGEABLE forum member. This one seems to crave attention to the point where he will post anything to get himself noticed. Some times the information is irrelevant, often dangerous - and almost always wrong.

I would like to point out that his last activity was in this thread. When he was proved wrong & incompetent & given the e-paddle, but mostly he was proven wrong & completely incapable of any testing whatsoever - he quickly started using a different name so he could continue he ill-concieved persona of actually helping the rotary community and spreading needed and decent knowledge.

Aaron Cake

iTrader: (1)

We're done here...

Members posting under another name is frowned upon...