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[VB] Re: was spring washer-now stretched valve stem
Hi Gary,
It's pretty evident by your responses and reasoning that you like to
tinker with your bus on a regular basis. Nothing wrong with that; I
like tinkering too. Using heads with sunken valve seats (read that:
LOOSE) and using lash caps to mask another problem are your right as
an American. Go for it Brother!!
The problem I have is that you encourage others to engage in this same
very, risky behavior with THEIR motors and think it's no big deal. I
can say with full confidence that 99.99% of folks don't like to work
on their bus regularly OUT OF NECESSITY. Working on your bus for fun
is one thing; it can be therapeutic if not spiritual for some. But
fixing things because you took a short-cut, followed bad advice and
just ignored the obvious really takes the FUN out of it for most
folks!! It can also cost a heck of a lot more in the end than just
doing the job right the first time. This is especially true if it
happens away from home and you're stranded. The AIRS list is a great
resource, but I prefer to use it to meet folks for fun, not because
I'm stranded. :-)
--
Regards,
Nate Morse
Owner, ProVolks
Anacortes, WA
(360) 299-8860
Nate's AircooledTech
http://www.aircooledtech.com
Quoting Gary Gibson <meckie1@xxxxxxxxxxxxxx>:
Hi Nate,
If Kevin removes the rocker arms and the dented valve stem is sticking
out farther than the other valves, you have made a great point and
Kevin is lucky to still have an engine! I can't remember if if Kevin
checked this out? If this is not the case I think that lash caps will
work. Of course you'd want to install lash caps on all valves to
maintain valve train geometry which may well be off at any rate and
possibly shim out the rockers. As to the quality of valve jobs, I find
it cheaper to buy new medium quality heads than getting quality valve
work. Go to any part shop that sells rebuilt heads and put a straight
edge along the tops of the valve stems and you will find that the
valves are all at different heights. I've had quality heads that have
been rebuilt three times where the exhaust valves have plainly sunk
into their seats and the intakes and exhaust valves are just at
different heights. These heads will still give maybe 15-30 K miles if
assembled with care.
I agree that solid rocker assembles are needed with stout valve
springs. Anything with clips will fail then. Watch out, many of the
solid rocker assembles for sale are junk. Still, with stock and even
slightly stronger valve springs the stock rocker assembles are fine
with clips if the wavey washers are replaced with the proper
thicknesses of flat washers. I think that's where I got into this
discussion. Look at almost any 40 year old stock rockers assembly and
the wavey washers will be worn paper thin on their high side.
Something that every vintage bus driver should be aware of!
Gary Gibson
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