The Sportster and Buell Motorcycle Forum

Go Back   The Sportster and Buell Motorcycle Forum > SPORTSTER MOTORCYCLE ZONE > Sportster Motorcycle Era Specific and Model Specific > Ironhead Sportster Motorcycle Talk (1957-1985)
XLF Blogs XLF Shout XLF Arcade XLF Disclaimer/Privacy Statement/Terms Of Use


Ironhead Sportster Motorcycle Talk (1957-1985) For all those that wanna talk about Ironhead Sportster Motorcycles

Members Birthdays
jeffcahill (63), jeebus (48), cdepaola (46), RubenAlonzo (46), chida66 (41)
Main Menu
Sponsored Links
Share Thread Tools Display Modes
Old 23rd September 2007
blacksmith.jb's Avatar
blacksmith.jb blacksmith.jb is offline
Join Date: Aug 2007
Location: Portugal
Posts: 59
Sportster/Buell Model: Ironhead
Sportster/Buell Year: 70's
Other Motorcycle Model: Virago 250
Reputation: 10
blacksmith.jb is an unknown quantity at this point
Default Engine pinging when idling

Hi you all
When I start my bike in the morning I do it with a bit of choke on, and it goes in a fast idle about half a minute or so, but I'm thinking that there's some pinging goin on at this RPM. I've read that detonation is supost to happen when you pushing on the engine, like up the hill or something like that. Could it just be the thermal shock on the exhausts? How can I be sure that is detonation?
And if it is.. how do I stop it? I've read a lot about detonation but couldn't find a way to stop it.
Thanks in advanced
For those about to rock I salute you!
Reply With Quote
Old 23rd September 2007
IronMick's Avatar
IronMick IronMick is offline
Rider Of The Iron Steed
Join Date: Dec 2003
Location: London, ON Canada
Posts: 29,516
Sportster/Buell Model: XLH
Sportster/Buell Year: 1978
Reputation: 260404
IronMick has a brilliant futureIronMick has a brilliant futureIronMick has a brilliant futureIronMick has a brilliant futureIronMick has a brilliant futureIronMick has a brilliant futureIronMick has a brilliant futureIronMick has a brilliant futureIronMick has a brilliant futureIronMick has a brilliant futureIronMick has a brilliant future

I think the det'n is caused either by a lean condition or timing too advanced. I might be wrong on this as i am not expert or have a lot of experience with it.

I would wait for other opinions first, but consider reviewing the Setting Your Pilot Screw and Setting Ignition Timing Stickys.
IronHead Forever!

Visit Mick's WebSite
[And Check Out My Autobiog]
Reply With Quote
Old 24th September 2007
whittlebeast's Avatar
whittlebeast whittlebeast is offline
Senior Master Custom Bike Builder
Join Date: Dec 2006
Posts: 4,954
Sportster/Buell Model: 1200 Low
Sportster/Buell Year: 2007
Other Motorcycle Model: Yamaha FZ1
Other Motorcycle Year: 2008
whittlebeast has disabled reputation

Could your motor be stuck at full advance? Detonation at idle is very rare if not imposible. Most likely you are hearing something else.

Regarding engine mods, it all depends what you are driven by......
Bling, bragging rights, silky smooth power delivery, a little more peak power, violent power delivery,
traction or wheelie limited acceleration, a sound that just drips testosterone or peace of mind that
everything is as perfect as you know how to make it.

When the racers get done doing the impossible the engineers get a chance to correct the errors in the model.

***My other addiction, running Megasquirt EFI ***
Reply With Quote


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Sponsored Links
All times are GMT +1. The time now is 20:12.

Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.
XL Forum - Linson Media LLC