Super low idle. Sounds cool but......
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Joined: Oct 2015
Posts: 1,170
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From: Ft.Worth, Texas
Super low idle. Sounds cool but......
I was watching some YouTube vids while doing a search for "best sounding Harley" and saw several that were running with the idle set very low, maybe 300 rpm. While they sounded pretty cool, I was wondering how they get enough oil pressure to keep from smoking the motor? Idle speed that low cant be a good idea. What am I missing?
Stellar HDF Member
Joined: Jan 2013
Posts: 2,721
Likes: 103
From: St. Louis, MO
Exactly.
My Evo had a pressure gauge and they don't hold much pressure at idle even at 900. I'm guessing the light came on at like 3 psi...
My Evo had a pressure gauge and they don't hold much pressure at idle even at 900. I'm guessing the light came on at like 3 psi...
Seasoned HDF Member
Joined: Dec 2004
Posts: 11,068
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From: Texas! Ya mean there's someplace else?
That! Too low RPM and the thing changes round parts into square ones.
Elite HDF Member
Joined: Jul 2010
Posts: 3,830
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From: Lorain Ohio
Seems like I remember reading idle speed is about oil flow, not pressure. Too low not enough oil volume moving to protect the bearings/moving parts.
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Outstanding HDF Member
Joined: Jul 2013
Posts: 2,874
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From: Houston, TX
Nope, an evo doesn't really get adequate oiling until around 1800RPM's. It's all about not beating that crank to death. Remember, a single pin crank is always going to be heavier on one side. Even though they're balanced they still need speed to spin smoothly.
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Joe Kucinski
Outstanding HDF Member
Joined: Jul 2013
Posts: 2,874
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From: Houston, TX
The oiling on an evo and shovel are practically the same save for how oil reaches the rockers and the rest of the top end. This can be rectified with something like the H2LT kit though.