Date: Thu, 5 Sep 2002 19:22:13 -0500
Reply-To: Mark Ingalls <ingalls_mark@HOTMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Mark Ingalls <ingalls_mark@HOTMAIL.COM>
Subject: Re: New owner of 91 Westy -- sticky valve
Content-Type: text/plain; format=flowed
The lifters I have in my van are supposedly new. The van is not driven but
5k a year, so if I could run like solid lifters and have to adjust once a
year it would be worth it to me to run .006.
I wouldn't have know a person could run hydraulic lifters at .006 clearance
if it weren't for Boston Bob, etc.
Am I correct that as long as there is no constant pressure on the top of the
lifter that it will not lose it's oil pressure when the van is shut off. Or
will the lifters have to pump up every time the van is shut down for a day
or two.I guess I am not clear on how no preload solves the cold start
clattering valves problem.
And with Boston Bob's hot start problem he had with his van, i.e. the
lifters holding the valves open when hot, what wayward mechanics causes
that?
>From: Stan Wilder <wilden1@juno.com>
>To: ingalls_mark@hotmail.com
>Subject: Re: New owner of 91 Westy -- sticky valve
>Date: Thu, 5 Sep 2002 18:26:51 -0500
>
>Your lifters should quieten down in less than a minute when you drive the
>van daily.
>They may require two minutes to five minutes if you drive the van once a
>week.
>Remember that you'll always have some lifter noise on start up because
>the lifters lay on their side and drain down overnight.
>I've been told that lifters don't go bad but I've had some get weak.
>It wouldn't be a bad idea to investigate to possibility of weak lifters
>if you have a high mile engine.
>I just replace all four on one side and if that quietens it then I've
>found the problem.
>If your engine has been rebuilt your lifters could be high mile and were
>just surfaced and reused.
>I don't know of a good way to test lifters other than just swapping known
>good lifters for possibly bad lifters.
>I've got a half dozen type IV engines fully built so I've got plenty of
>lifters to test with but I'd recommend that you buy two new lifters and
>replace them by the pair, run the engine and move the pair until you get
>it quiet.
>Most lifters fail at high RPMs and high heat so its hard to find them.
>
>Stan
>
>
>On Thu, 05 Sep 2002 18:02:47 -0500 "Mark Ingalls"
><ingalls_mark@hotmail.com> writes:
> > Thanks. I am going to go to .006 soon. I'm tired of having clattering
> > valves
> > if I don't drive the van every day. I've tried the MMO, but it only
> > helps
> > for a while on mine.
> >
> >
> > >From: Stan Wilder <wilden1@juno.com>
> > >To: ingalls_mark@HOTMAIL.COM
> > >CC: vanagon@GERRY.VANAGON.COM
> > >Subject: Re: New owner of 91 Westy -- sticky valve
> > >Date: Thu, 5 Sep 2002 17:55:57 -0500
> > >
> > >Also what is the purpose of running the engine for a minute with
> > the
> > >valve
> > >covers off before you do the adjusting? Is it to pump up the
> > lifters?
> > >------------------------------------
> > >Give stuck lifters a chance to start using their internal spring
> > again.
> > >
> > >Stan
> > >
> > >On Thu, 5 Sep 2002 16:54:19 -0500 Mark Ingalls
> > <ingalls_mark@HOTMAIL.COM>
> > >writes:
> > > > On Stans web site he has in the valve adjusting procedure a
> > step
> > > > about
> > > > removing #1 spark plug and inserting a piece of wire in order
> > to
> > > > determine
> > > > TDC.
> > > >
> > > > I am inclined to just pop off both valve covers, pop off the
> > > > distributor
> > > > cap, note which cylinder the rotor tip is close to pointing to,
> > then
> > > > turning
> > > > the engine until that cylinder is at TDC by using the mark on
> > the
> > > > pulley or
> > > > 180 degrees opposite, whichever applies. That is how I do my
> > type
> > > > 1.
> > > >
> > > > Then you can watch the valves open and close as you rotate the
> > > > engine to do
> > > > the other valves, to double check that the valves are opening
> > and
> > > > closing
> > > > when they are supposed to.
> > > >
> > > > Also what is the purpose of running the engine for a minute with
> > the
> > > > valve
> > > > covers off before you do the adjusting? Is it to pump up the
> > > > lifters?
> > > >
> > > > Sincerely,
> > > > Mark I
> > > >
> > > >
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