<VV> RE: VirtualVairs digest, Vol 1 #1101 - 10 msgs

[srmarti]

I'd also check for the dreaded sheared woodruff key on the crankshaft gear.
Good compression might mean the valves are opening and closing the right
amount but not at the right time.

Been there, done that.

Steve Marti


> Date: Wed, 22 Sep 2004 19:40:03 -0600
> From: "Geoffrey A. Johnson" <geoffj@unm.edu>
> To: virtualvairs@corvair.org
> Subject: <VV> Shredded Cam Lobe
>
> Anything else could cause this beside a dead lobe?  Car has a bad
> miss and
> trouble accellerating and backfiring.  So I pull the valve covers
> and start
> it.   Number 1 intake is moving maybe 2 millimeters.  Compression test is
> fine ~120 on all.  Motor has about 8,000 miles on it after a rebuild.  It
> has never sounded right, always has had a funny sound from the
> valve train.
> OT20 reground cam and new lifters when it was built.   I pulled
> the rocker
> and started it and held the end of the pushrod, again it is only moving
> just a touch.  All the others are moving fine.  New rockers, balls and
> springs  were also put in at the same time.  This is on my
> sisters evil 61
> sedan.  Will pull the lifters tommorrow when it is light and take
> a further
> look.
>
> -Geoff Johnson
>
> --__--__--
>
> Message: 10
> Date: Wed, 22 Sep 2004 18:46:29 -0700 (PDT)
> From: Ryan Counterman <vairking@yahoo.com>
> Subject: Re: <VV> Shredded Cam Lobe
> To: "Geoffrey A. Johnson" <geoffj@unm.edu>, virtualvairs@corvair.org
>
> Sounds like a shredded cam lobe to me, same thing
> happend on my V8Vair, found out I had the wrong valve
> springs in it, and they were too stiff...
>
> Ryan Counterman
>
>
> --- "Geoffrey A. Johnson" <geoffj@unm.edu> wrote:
>
> > Anything else could cause this beside a dead lobe?
> > Car has a bad miss and
> > trouble accellerating and backfiring.  So I pull the
> > valve covers and start
> > it.   Number 1 intake is moving maybe 2 millimeters.
> >  Compression test is
> > fine ~120 on all.  Motor has about 8,000 miles on it
> > after a rebuild.  It
> > has never sounded right, always has had a funny
> > sound from the valve train.
> > OT20 reground cam and new lifters when it was built.
> >   I pulled the rocker
> > and started it and held the end of the pushrod,
> > again it is only moving
> > just a touch.  All the others are moving fine.  New
> > rockers, balls and
> > springs  were also put in at the same time.  This is
> > on my sisters evil 61
> > sedan.  Will pull the lifters tommorrow when it is
> > light and take a further
> > look.
> >
> > -Geoff Johnson
> >  _______________________________________________
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