Date: Tue, 1 Feb 2000 11:54:48 PST
Reply-To: Richard Bias <rbias@HOTMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Richard Bias <rbias@HOTMAIL.COM>
Subject: Re: Hydraulic valve lifter (mis)operation
Content-Type: text/plain; format=flowed
Bob, David (and All),
OK, now that I fully understand the issues and problems you guys see and
are dealing with, I am confused. I just did my engine so I want to
understand and learn what is happening. Bob, I followed your procedure and
it seems to have worked very well (I have not done a compression test yet).
I have a question though, when I was at 6 mils lash, my engine sounded like
a coffee can full of marbles rolling down a hill, when I adjusted per the
process, my engine Humms beautifully (sounds a little like a Porsche engine,
if I close my eyes I think I am standing next to a 911). Can you please
explain and keep me honest (and my engine from burning a valve or two).
Thanks for your time and effort.
Rich
>From: Bob Donalds <bostneng@fcl-us.net>
>Reply-To: bostneng@fcl-us.net
>To: Richard Bias <rbias@HOTMAIL.COM>
>CC: vanagon@GERRY.VANAGON.COM
>Subject: Re: Hydraulic valve lifter (mis)operation
>Date: Tue, 01 Feb 2000 13:28:47 -0500
>
>Richard Bias wrote:
> >
> > All,
> > The whole thing about adjusting to 6 mils of lash was and is only a
> > momentary (1/2 hour tops I believe) part of the "adjusting process". No
>one
> > said (and if they did, they were wrong) to leave the valves at 6 mils of
> > lash. It is just to get the lifters to pump full of oil before you
>adjust
> > them back down 1 turn (360 degrees) from 6 mils, to allow the
>"hydraulic"
> > part of "hydraulic lifters" to take over from there.
> > Rich
> >
>
>Richard
>I deal with this problem every day and I am telling you there are times
>when adjusting the valves as you suggest is wrong. I tell my customers
>they preload the lifters at there own risk the valves just dont close
>all the way. so yes .006 ths is the way to go in some cases or you will
>have low power low manifold vacuum hard or no start hot and you will
>burn the valves. also if you do preload the lifters a compression test
>is needed before and after to makes sure the valves are closed all the
>way. the exhaust valve has to sit on the valve seat or it overheats
>I cant tell you why this is just how to work with the hand we have been
>delt
>Bob Donalds
>http://www.bostonemgine.com
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