[AT] Was Misc Now valves

[Steve W.]

Spencer,
 Valve stems are hard steel, even real hot they won't expand very much.
But the cast guides will expand and allow the oil in. Then heating again
will expand the oil and may help force it in and might force crud out.

Steve Williams
Near Cooperstown NY


----- Original Message ----- 
From: "Spencer Yost" <Spencer.Yost at piedmontsystems.com>
To: <at at lists.antique-tractor.com>
Sent: Wednesday, March 10, 2004 3:39 PM
Subject: [AT] Was Misc Now valves


> Consensus seems to be:  Heat first, electrolysis next.  Thanks for all
the help, but guess what?
>
> Went home today for lunch and perform the semi-daily valve train
penetrant soaking.   As usual, I tried one of the valves with a wedge
just for fun.  It gave!  I am not sure why 4 days of soaking in
penetrant works better than 3, but it does.  Or maybe, sometimes it just
helps to talk about it (-;
>
> Out of the 8 valves, two came out right away last weekend(the two open
valves), 4 budged today at lunch - at least enough to get a
puller/splitter under the valve head.  Two are still stuck tight
(cylinder 4).  Of the two remaining valves, one of the tappet adjusting
bolts was not turing - it was stuck too but I did get that broke lose at
lunch.  Because that was stuck I couldn;t get a wedge between the valve
stem and tappet adjusting bolt.
>
> If the last two valves don't give tonight or tomorrow after 5 full
days of thrice daily soaking, I will try heat as suggested.  The heat I
never really thought about but I will try.  I just always assumed the
stem would heat and expand faster than the guide and just wedge it in
tighter.
>
> I hope I don't have to resort to electrolysis.   Thanks again for
everyone help, I sure do appreciate it.
>
> Spencer
>
>
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