> Date:    Sat, 26 Jan 2002 17:54:40 -0500
> From:    "G. Matthew Bulley" <gmbulley@BULLEY-HEWLETT.COM>
> Subject: Re: Aircooled lifter noise
>
> Perhaps you have confused my assertion.
  Yes.
>
> Jake has asserted that un-adjusted valves are a cause of valve seat
> failure because the valve "slams against the seat".

'un-adjusted valves' =  rocker gap is greater than spec is your assertion?
>
> I am saying that (while valve seats are a common cause of problems)
> slack valves that clatter are NOT slamming on the seats, the rocker arms
> are (fairly harmlessly) clattering against the valve tips.

You're asserting that the rockers are clanking against the pushrod tips,
right? that does make a lot of clatter in my old straight six, also beats
the heck out of the ends of the pushrods. however, the clatter does not
subside after the engine is warmed up/hot.

Paul
'87 Westy, '81 Land Cruiser with straight 6 tractor engine