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Low RPM/High load oil pressure

dyeager535

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I suppose mainly the guys that drive and/or wheel with manuals will have much experience lugging an engine in gear based on driving conditions, but one of the reasons I went with the oil pump I did (plus George Richmond's recommendation w00t) was to try and crutch oil pressure under conditions where you are trying to get over an obstacle at low speed. In my case, some of it is laziness mixed with practicality, going from 1st to low to 1st repeatedly is a real PITA since low isn't synchronized (plus not always easy in snow/ice, uphill), and I spend a bunch of time in 1st. So the option is either do the whole complete stop, move real slow for a bit, then upshift routine, or leave it in first and lug the engine. I was running the 205 previous, now the 241, so based on the calculator I just checked, I should be able to run 4lo and 2nd gear to get a bit less lugging. Anyway, I tested it out the other day in not identical conditions, but the new pump seems to do a pretty good job of keeping the pressure about double what it was under similar conditions with the stock pump. Remains to be seen under identical conditions. No idea if anyone else thinks about this sort of thing and finds it interesting like I do, but I guess that's why it's my hobby. :)

No one is ever going to accuse me of being good at recording things.

 
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In the same scenario as you. I like that low rpm high flow/pressure

@mrk5
 
I didn't think this was significant, but in looking at it, the needle (oil pressure) moves very little from idle to ~4000RPM. On any other engine I've run, it will climb as RPM increases, this indicates to me that with present bearing clearances, at idle there is no improvement to be had in volume the pump moves. That may just be because I've never run a high volume/high pressure pump.

This footage isn't too bad, considering I'm holding the GoPro with my mouth lol.

 

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