Please login or register.

Login with username, password and session length
Advanced search  

Author Topic: Valve seal came off  (Read 1402 times)

0 Members and 1 Guest are viewing this topic.

rascal1007

  • Full CVO Member
  • ***
  • Offline Offline
  • Posts: 236

    • CVO1: 2009 CVO Road Glide
    • CVO2: 2018 CVO Road Glide
Valve seal came off
« on: September 02, 2018, 06:43:15 PM »

Background:
09 CVO 110 with 72300 miles
TTS and Fullsac pipe since virtually new
Andrews 54 cams for the last 50000 plus miles
Fuelling lifters high volume SE oil pump and cam plate installed at just over 60000 miles.

Seal came off the guide on the front exhaust valve last weekend and got flattened.

Any else have this issue or have suggestions?
Logged

HD Street Performance

  • Vendor
  • 2.5K CVO Member
  • *
  • Offline Offline
  • Posts: 3118
Re: Valve seal came off
« Reply #1 on: September 02, 2018, 07:04:46 PM »

I have done a lot of work on these heads over the years. There have been runs of guides that have the tops a few thousandths small. Not good. The latest black seals should be very snug. If they slide on easy something is wrong. The 07 and 08s used kline's, not so good, they were replaced on the program heads with the black vitons, a good seal but way too expensive.
Logged

TorqueInc

  • Get your facts first, then you can distort them as you please. Mark Twain
  • Vendor
  • Senior CVO Member
  • *
  • Offline Offline
  • Posts: 391
Re: Valve seal came off
« Reply #2 on: September 03, 2018, 06:22:12 AM »

Probably just wore out.....alot of heat there

Good time mileage wise for a freshen up
Logged
2011 SG Sedona Orange 105" 125/123

www.jwperf.com

prodrag1320

  • AMRA & AHDRA P/D record holder
  • Vendor
  • Elite CVO Member
  • *
  • Offline Offline
  • Posts: 917
Re: Valve seal came off
« Reply #3 on: September 03, 2018, 08:30:09 AM »

replace the seals with AV&V seals,theira lot better than OEM and they will never come off,while your doing that,replace the OEM springs with AV&V or kibblewhite,your lifters will thank you

HD Street Performance

  • Vendor
  • 2.5K CVO Member
  • *
  • Offline Offline
  • Posts: 3118
Re: Valve seal came off
« Reply #4 on: September 03, 2018, 10:49:37 AM »

When I encounter a guide top that is out of spec I cut it to .423 for a .421 ID seal, problem solved. It doesn't matter the brand, an undersized guide top will slip a seal. I use AV&V or US Seal ROK.
Logged

MCE

  • Guest
Re: Valve seal came off
« Reply #5 on: September 06, 2018, 12:08:44 AM »

Probably just wore out.....alot of heat there

Good time mileage wise for a freshen up

+1
Logged
 

Page created in 0.195 seconds with 21 queries.