Lowering Idle Speed
Grand HDF Member
Joined: Dec 2007
Posts: 4,999
Likes: 55
From: Bay Area
Come back and report how many miles you got on the engine when it fails. Be interesting to see!
Tourer
Joined: Feb 2006
Posts: 390
Likes: 1
From: Ozark, AL
lower idle ??
I'm not so sure, but.
The newer Oil pumps put out more volume both ways.
The heat cycle drops the RPM lower and cuts out the back cylinder, so it still has to pump oil and squirt oil on the Pistons..Correct?
I wouldn't go as low as any lower than 800 though.
That'd be a 20% drop correct?
The newer Oil pumps put out more volume both ways.
The heat cycle drops the RPM lower and cuts out the back cylinder, so it still has to pump oil and squirt oil on the Pistons..Correct?
I wouldn't go as low as any lower than 800 though.
That'd be a 20% drop correct?
Outstanding HDF Member
Joined: Nov 2008
Posts: 2,034
Likes: 127
Getting potato-potato-potato sound ...and smell
When all else fails, I guess you could just pound a couple of large baking potatoes into the ends of your mufflers...
Something tells me that your acceleration might suffer a smidge though from the mid to high range.
Something tells me that your acceleration might suffer a smidge though from the mid to high range.
Tourer
Joined: Oct 2011
Posts: 339
Likes: 0
From: canton ga
Road Master
Joined: Oct 2007
Posts: 1,117
Likes: 4
From: Log home in SE Michigan full time. Log cabin in east TN, Smoky Mountians part time
Lil story about the piston squirter's... my BIL had a 116ci engine built one winter for his dyna a few years ago...thing ran hotter than hell. You couldn't even touch the rocker boxes they would get so hot. He rode the bike for a 1000 miles during Daytona bike week. Started hard when hot but ran. Returned back to MI the clowns that built the engine milled the piston squirter's virtually OFF boring the case for the stroker kit. The bike NEVER blew up and til this day 6 years later the 116 is flat quick.
To the OP....program your tuner for a rich condition at 750 rpm...it'll lope, guaranteed. Ol' school street racer trick was to pull the choke cable out and richen' up the idle and cruise the malt shops. Buy one of those fancy auto tuners and you cant do this. A PCIII you can.
Tourer
Joined: Mar 2008
Posts: 413
Likes: 7
From: Oklahoma
I cant say beyond a shadow of a doubt about poor oiling at a low enough Idle to get the old potato exhaust note, BUt I was told by and old harley mech and he still is wrenching them (he's about 70). According to him the air flow is so little at that low a rpm the map sensor and IAC cannot function properly , the bike will start to surge and either die or throw codes. Now change out the cams, that will change it, depending how radical the cams are.
Grand HDF Member
Joined: Mar 2008
Posts: 4,997
Likes: 655
From: bklyn,ny
It is better to sound good than it is to run good
What is the fascination of a slow idle? Do you ride or just sit around and let the bike idle
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Seasoned HDF Member
Joined: Jan 2009
Posts: 5,149
Likes: 2,975
From: WACO
How can I lower an 09 ultra classic idle speed to something like the old potato sound? Is it possiable? My scooter idles at about 950 warm...I would like to see what it would sound like at 650....
AT that low idle would it oil ALL of the internal componets? What would you suggest?
AT that low idle would it oil ALL of the internal componets? What would you suggest?
Tourer
Joined: Oct 2011
Posts: 339
Likes: 0
From: canton ga
Your EFI will never be able to do this.
http://www.youtube.com/watch?v=GVHx3OiiaRs
http://www.youtube.com/watch?v=GVHx3OiiaRs
sounds great