home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!cs.utexas.edu!uwm.edu!spool.mu.edu!darwin.sura.net!zaphod.mps.ohio-state.edu!sol.ctr.columbia.edu!hamblin.math.byu.edu!yvax.byu.edu!cunyvm!psuvm!kxn2
- Newsgroups: rec.autos.tech
- Subject: Re: Hydraulic Valve Adjuster, What Are?
- Message-ID: <92314.100241KXN2@psuvm.psu.edu>
- From: Karl Nordstrom <KXN2@psuvm.psu.edu>
- Date: Mon, 9 Nov 1992 10:02:40 EST
- Organization: Penn State University
- Lines: 27
-
- mchaffee@ux4.cso.uiuc.edu (Michael T. Chaffee) says:
- >
- >Karl Nordstrom <KXN2@psuvm.psu.edu> writes:
- >>
- >>What are hydraulic valve adjuster in a DOHC engine?
- >
- >In any engine that has them, the hydraulic adjusters reside at some point in
- >the linkage between cam and valve. The adjusters are basically little
- >cylinders containing little pistons that are expanded by engine oil pressure.
- >As the valve train and valve seats wear, the adjusters expand or contract
- >to compensate for this wear and keep the valve clearances at the proper level.
- >
- >Advantages: Zero Maintenance
- > Silence
- >
- >Disadvantage: Silence
-
- What makes them silent? Whats wrong with silence? Perhaps you were referring
- to the sound of a high revving DOHC engine?
-
- Do hydraulic valve adjusters provide any other function? I have heard of
- hydraulic lifters in OHV engines that allow the engine to use a hotter cam
- but still maintain decent low rpm drive-ability.
-
- Are hydraulic valve adjusters the same as hydraulic lash adjuster?
-
- Lastly, what alternatives are there to hydraulic valve adjusters?
-