Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Forums > Porsche Forums > 911 Engine Rebuilding Forum


Reply
 
LinkBack Thread Tools Rating: Thread Rating: 1 votes, 1.00 average.
Author
Thread Post New Thread    Reply
Max Sluiter
 
Flieger's Avatar
 
Join Date: Mar 2006
Location: So Cal
Posts: 19,644
Garage
valve float

a little off topic but cool nonetheless. The fun starts about halfway through.


__________________
1971 911S, 2.7RS spec MFI engine, suspension mods, lightened
Suspension by Rebel Racing, Serviced by TLG Auto, Brakes by PMB Performance
Old 03-12-2010, 08:17 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
3 restos WIP = psycho
 
kenikh's Avatar
 
Join Date: Feb 2005
Location: North of Exit 17
Posts: 7,665
I always thought if you threw them in water, that was how you could tell...

Holy crap - how many FPS does a camera need to capture movement!
__________________

- 1965 911
- 1969 911S
- 1980 911SC Targa
- 1979 930

Last edited by kenikh; 03-12-2010 at 08:31 PM..
Old 03-12-2010, 08:27 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Registered
 
Join Date: May 2003
Posts: 3,346
Interesting video, but why do you think the valves are floating? I can't tell from this video.

-Andy
__________________
72 Carrera RS replica, Spec 911 racer
Old 03-14-2010, 09:36 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Max Sluiter
 
Flieger's Avatar
 
Join Date: Mar 2006
Location: So Cal
Posts: 19,644
Garage
They are on the verge of float because the springs are turning so they are just able to rebound and close the valve in time. They do not have enough reserve pressure to keep themselves fixed in place.

I just wanted a title and that seemed easier than "BMW engine valvetrain revving crazy fast"
__________________
1971 911S, 2.7RS spec MFI engine, suspension mods, lightened
Suspension by Rebel Racing, Serviced by TLG Auto, Brakes by PMB Performance
Old 03-14-2010, 11:45 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Black and Blue
 
Kemo's Avatar
 
Join Date: Jul 2000
Location: Austin, TX USA - Ya'll
Posts: 2,552
Send a message via Yahoo to Kemo
so when do 911 motors start spinning springs? interesting video
__________________
Kemo
1978 911 SC Non-Sunroof Coupe, two tone Primer Black and SWEPCO Blue, Currently serving as a Track Whore
1981 911 SC Sunroof Coupe, Pacific Blue Project, Future Daily Driver
Old 03-15-2010, 12:01 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
Registered
 
Join Date: Sep 2007
Posts: 500
Here's another good video of float, spin,spring surge and valve bounce

YouTube - Valve Float


Last edited by jcge; 03-15-2010 at 01:54 PM.. Reason: bounce
Old 03-15-2010, 01:51 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 03:43 AM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2025 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.