Re: IML: 1947 straight six one valve stuck open.

[randalpark@xxxxxxx]

Now that you mention that it only sticks open part of the time, I am 
going to suggest that the most likely problem is that the valve seat is 
loose or damaged. The valve seat is a press fit, and can come loose if 
it wears out. If it is in place, the valve will close, if not, it 
blocks the valve and won't allow it to close. I have seen this 
condition on Ford Flathead V8's. There are other things that could be 
wrong, so taking the head off probably is a good idea. To fix the valve 
seat, the head does have to be removed.

I am advising based on email. It would be better if I was there. Even 
better, a skilled auto mechanic is the best resource.

Paul W.

-----Original Message-----
From: jbaker22@xxxxxxxxxx
To: mailing-list@xxxxxxxxxxxxxxxx
Sent: Sat, 10 Feb 2007 1:39 PM
Subject: Re: IML: 1947 straight six one valve stuck open.

Since it will run, and occasionally close[ fire] let it run a while and 
it may free it self up. The clearance on the stem may just be a little 
tight from rust or ? and a good warm running will loosen it up. I  was 
raised around a junk yard and a father that favored 6 cylinder 
Chryslers and Desotos above all. I have seen him do this. No Guarantee 
but it is worth trying. It won't hurt it.
----- Original Message -----
From: Mark Battesby
To: mailing-list@xxxxxxxxxxxxxxxx
Sent: Saturday, February 10, 2007 3:54 PM
Subject: Re: IML: 1947 straight six one valve stuck open.


Thanks Paul yes the car does run and you can view the valves with it 
running. I guess Ill have to take the top of the moter off again . I 
was hoping there was another reason why the valve is open  it does drop 
down every so often i guess there must be something in the way that is 
blocking it. I guess thats what i will do

randalpark@xxxxxxx wrote: Back in the days when cars made that way were 
still popular, there were
mechanics who would come to your house to work on the valves. I don't
know enough about flat head engines to say what with conviction what I
think the problem is, but a stuck valve is a stuck valve.

When the engine was shut off some of the valves are open, some are
closed. If the car was parked for a long time, the valve stem could be
rusted due to a water leak. There could be a bad valve spring, or
possibly a valve seat has broken or come loose and part of it wedged
into the valve stem. Something may have fallen down the carburetor when
the engine was running and wedged itself between the valve and valve
seat, down by the stem. The engine has most of the same parts, except
that there's no rocker shafts & arms, valve keepers, or push rods (at
least not in the way that we think of them). I have heard of lifters
referred to as push rods in flat head engines.

The "viewing windows" (also commonly called valve covers) are mainly
for in car servicing and adjustments. If I am not mistaken, the engine
can be run when the covers are off to make valve adjustments. If the
engine runs, viewing things that way should make something apparent to
you. If it doesn't run, I would say that you need to fix this before
you make it run. I am not a scientist, physicist, or a trained
mechanic. I don't think you are seeing everything that is going on,
other than that the engine needs work.

Do you have a Factory Shop Manual? Even a general repair manual would
help you in this case. There is obviously a mechanical failure. Those
are not hard to spot if you know what to look for. I am sure others
will chime in on this. Chrysler used essentially that engine design for
the six cylinder cars until around 1959.

Paul W.

-----Original Message-----
From: a1web@xxxxxxxxxxxxx
To: mailing-list@xxxxxxxxxxxxxxxx
Sent: Sat, 10 Feb 2007 2:49 AM
Subject: IML: 1947 straight six one valve stuck open.

On these type of motors they have viewing windows so you can see the
valve as they work. I recently had the top of the engine off. At that
time I clean all of the lifters and any corrosion. I don't understand
what is keeping one valve compressed . What could be keeping it open. I
don't see the purpose of pulling the head again I know there is nothing
on that side that would restrict the valve from opening or what i
really need is for the valve to uncompressed. I cant even force it open
is there some kind of trick . With these windows I can see and access
the valve is there a easy way to get this valve working again
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