HarleyTechTalk

Technical Forums => Twin Cam => Topic started by: fxdl03 on September 08, 2020, 04:51:25 AM

Title: Twincam valve springs
Post by: fxdl03 on September 08, 2020, 04:51:25 AM
Beehive or double springs for agressive high lift short duration cams .650 lift will hit rev limiter at times non brand specific cams 2014 dyna
Title: Re: Twincam valve springs
Post by: kd on September 08, 2020, 05:10:35 AM
 
Quote from: fxdl03 on September 08, 2020, 04:51:25 AM
Beehive double springs for aggressive high lift short duration cams .650 lift will hit rev limiter at times non brand specific cams 2014 dyna

Fixed it for you.   :wink:
Title: Re: Twincam valve springs
Post by: Hillside Motorcycle on September 09, 2020, 04:20:44 AM
Have never witnessed a .650" Kibblewhite fail as of yet.
Title: Re: Twincam valve springs
Post by: r0de_runr on September 12, 2020, 05:42:14 AM
My AV&V Beehive springs had a failure in my 2012 CVO 110.  Cost me about $3000.
Title: Re: Twincam valve springs
Post by: Don D on September 12, 2020, 07:08:13 AM
We run dual springs with lightweight tool steel retainers in these applications. These are smaller that most duals so are lighter weight springs but have adequate rate and pressure to control the lift.