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What is the normal oil pressure on a HD 2005 Heritage Springer?

I just had an oil pressure gauge installed on my Harley Davidson 2005 FLSTSCI and I am trying to find out what the normal oil pressure should be at highway speed?

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Hello you didnt say what oil you run (weight 10-50 20-50 conv, or synthetic) as a average pressure at idle as low as 10psi and running down the road as high as 50psi

Posted on Jan 01, 2009

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Oil Pressure


Very common on h-d big twins for the last 75 years or so. These bikes have a dry sump oil system which means you have 2 oil pumps, feed and scavenge. The feed pump is very puny compaired to the scavenge, so at idle (especially when hot) it carries only a couple of pounds of pressure and that is all you need. The scavenge pump has a much greater capacity because if it can't keep up the crancase will start filling up and the crank will start slogging through the oil, killing performance. These bikes are equipped with hydraulic valve lifters which will start clanking loudly if you have a real oil pressure problem. Enjoy your ride and don't sweat it.

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ok first let me clue you in on a little tid bit you might be unaware of. HD has been making motorcycles for, well, over a hundred years bro! a make and model might help eh?

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