Lowering the idle speed.
Elite HDF Member
Joined: Apr 2008
Posts: 4,718
Likes: 11
From: Back in the Good Ole USA. South Carolina to be exact.
I've heard all this stuff about oil pressure and even the charging system. My bike doesn't sit idling long enough to run the battery down so charging isn't an issue. I can't believe that 200 rpm makes that big a difference in oil pressure at idle. Course if someone had a OP gauge we'd know.
With a SERT Pro I've had my idle adjusted down to 800 rpm for a while. Doesn't sound like a crotch rocket.
With a SERT Pro I've had my idle adjusted down to 800 rpm for a while. Doesn't sound like a crotch rocket.
Elite HDF Member
Joined: Sep 2007
Posts: 4,541
Likes: 1
From: Nuevo México, Los Estados Unidos de América
...and changes nothing about the issue. Because the non-computer people find it easier to adjust the idle speed (turn a ***), doesn't make it healthier for the bike. Carbed Twinkies don't idle lower than EFI by design, but because owners play with the adjustments.
Club Member
Joined: Feb 2007
Posts: 4,892
Likes: 2
From: DUNDALK,MARYLAND
Here from the people that make your bearings. Low oil pressure is big thing on the bearing cooling:
If a function of lubrication is to control or cool friction-generated heat, then preference will be given to oil, which can flow away, dissipating heat while recirculated oil is introduced to induce relative coolness.
If a function of lubrication is to control or cool friction-generated heat, then preference will be given to oil, which can flow away, dissipating heat while recirculated oil is introduced to induce relative coolness.
Road Master
Joined: Jun 2008
Posts: 1,022
Likes: 11
From: Sweden
Heres a guy in Germany..2007 SB with tickover down to 640 rpm..think he's got some high pressure oil pump ???????
http://www.youtube.com/watch?v=tfUCS-wUwv8
http://www.youtube.com/watch?v=tfUCS-wUwv8
Elite HDF Member
Joined: Sep 2007
Posts: 4,541
Likes: 1
From: Nuevo México, Los Estados Unidos de América
It's not going to cause your engine to explode idling at a stop light.
...but it's bad for your engine, as the oil pressure is too low, so you're trading engine longevity to sound cool at stop lights.
...but it's bad for your engine, as the oil pressure is too low, so you're trading engine longevity to sound cool at stop lights.
Thread Starter
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Road Warrior
Joined: Mar 2010
Posts: 1,900
Likes: 12
I like the sound of going down the road. So I guess I will just enjoy the 1000 RPM idle. She doesn't sound bad. The Thunderheader has some blat to it which is good, and after the bike has been ridden awhile the warmer idle sounds better than the first one of the day. I always allow the rocker boxes to get nice and warm before I take it out for the first time of the day, and never ride off with them stone cold after that. Take a few minutes for a walk around and put my gloves and garb on then time to roll out.
Thanks everyone.
Thanks everyone.
Last edited by editbrain; May 4, 2010 at 05:53 PM.
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Ultimate HDF Member
Joined: Nov 2009
Posts: 7,079
Likes: 21
From: Queens, NY
alright i'm confused.
why is it ok for carbed bikes to idle at low rpm's but not fuel injected bikes?
my '90 softail idle'd real low and sounded awesome and i never had motor trouble.
not trying to stir the ****, just wondering.
why is it ok for carbed bikes to idle at low rpm's but not fuel injected bikes?
my '90 softail idle'd real low and sounded awesome and i never had motor trouble.
not trying to stir the ****, just wondering.
Road Warrior
Joined: Jun 2009
Posts: 1,678
Likes: 1
From: Brooklyn, NY
Heres a guy in Germany..2007 SB with tickover down to 640 rpm..think he's got some high pressure oil pump ???????
http://www.youtube.com/watch?v=tfUCS-wUwv8
http://www.youtube.com/watch?v=tfUCS-wUwv8
frak me, that Bob sounds utterly insane.. i want it , Mommy can i please have it .
