Oil Carryover
Road Master
Joined: Mar 2007
Posts: 820
Likes: 18
From: Hawaii
I have to agree with BLKBAGGER, there is a BIG difference in how babbit bearings and roller bearing work. The babbit bearings need constant high oil pressure or there will be damage but not the same for roller bearings for a few seconds anyway. That said I use the scavanger system myself.
Outstanding HDF Member
Joined: Feb 2009
Posts: 2,005
Likes: 53
From: ID Ho
Yes autos do have wet sump engine but a dry sump is just a remotely located oil tank -keeping the oil away from the rotating assembly. They both have oil pressure.Just because hd's are roller bearings doesnt mean you can run them without oil pressure. So laugh all you want.
Club Member
Joined: Feb 2007
Posts: 5,335
Likes: 0
From: Tidewater
I just do what the manual says. First time with my 09 I added 4 quarts and had to suck out a little more than 1/2 quart. Now I add 2.75, warm it up and check it. Add a little until at the mark and ride like I stole it.
Road Master
Joined: May 2008
Posts: 1,196
Likes: 14
From: connecticut
Apperently you havent seen the inside of a Harley motor! Most of the bearings are lubed by drip holes not pressure. The valvetrain is pressureized and you know its out of oil when you hear the lifters ticking, guess what Harley says as long as lifter tick lasts less than a minute its all good!
I just get a little concerned when someone is telling somebody go ahead and rev up your engine with no oil in it. Like in a previous post. There was never any flaming intended.
Cruiser
Joined: Jan 2007
Posts: 163
Likes: 1
From:
I have a device for my Evo that you attach to the oil filter outlet. It lets you drain the oil captured in the sump at the bottom of the engine right into your drain pan. You drain the oil tank,refill till full, put the device on the engine , start it and let it run until you see clear oil coming out of the tube. Shut it down, put on oil filter and refill the tank, About a 1/2 a quart of crap oil from the sump should come out and that's all you need to refill. Takes an extra 5 minutes of time.
They have a unit for any Harley 1985 and up.
Scavenger Oil Change System
http://roguechopper.com/
They have a unit for any Harley 1985 and up.
Scavenger Oil Change System
http://roguechopper.com/
Outstanding HDF Member
Joined: Feb 2009
Posts: 2,005
Likes: 53
From: ID Ho
Yes Hogdoc I have never torn into a harley engine yet but with 25+ years as a master diesel technican I do know the importance of lubrication and engine life.
I just get a little concerned when someone is telling somebody go ahead and rev up your engine with no oil in it. Like in a previous post. There was never any flaming intended.
I just get a little concerned when someone is telling somebody go ahead and rev up your engine with no oil in it. Like in a previous post. There was never any flaming intended.
Even though they are both internal combustion engines Harley motors and car/truck motors are quite different in execution.
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Tourer
Joined: Feb 2006
Posts: 390
Likes: 1
From: Ozark, AL
Changing the oil and leave some old in the system which leaves you without oil pressure for the time that it takes to fill the new filter? Or,run it without the oil filter till you see clean oil then put a new filter on and run it again with no oil pressure till that new filter fills? Can you put a hose over where the filter screws on to catch the old oil or doe's it blow out the other non threaded hole?
Last edited by websterdan; Apr 23, 2010 at 09:39 AM.
Outstanding HDF Member
Joined: Apr 2008
Posts: 3,140
Likes: 17
From: Wisconsin
I don't worry about the small amount of oil left and for the past three days you guys have been arguing (discussing) which way is best, I've been out riding the crap out of mine with no problems. 
I've been changing my oil the same way for 35 years and still have never had an oil related problem in any of my bikes. In fact, in all those years of riding I have never seen an oil related failure unless it was lack of oil from a failed pump, ignorance, etc. It's funny, I know a guy who changes his synthetic in his motorcycle religiously every 2500 miles and he has never changed the oil in his riding mower. He has had several bikes over the last ten years or so, and only one riding mower, but they are all running fine.
I've been changing my oil the same way for 35 years and still have never had an oil related problem in any of my bikes. In fact, in all those years of riding I have never seen an oil related failure unless it was lack of oil from a failed pump, ignorance, etc. It's funny, I know a guy who changes his synthetic in his motorcycle religiously every 2500 miles and he has never changed the oil in his riding mower. He has had several bikes over the last ten years or so, and only one riding mower, but they are all running fine.
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