[AT] 430V

[Spencer Yost]

I forgot to mention Brice Adams picked up a stuck FM at Portland.   It's one of the headless types.  Talk about a tough row to hoe.  At least you and I have heads that could have been a plan B.


Anyways, he has access to liquid nitrogen.   So he is temperature cycling the piston by using the nitrogen and then loading coals from charcoal briquettes coals in the piston. Hasn't worked yet but he wanted to try that before throwing the whole block, piston and rod in a big fire.  Apparently this is a valid approach in the stationary engine world nearly always guaranteed to work.

Just thought I would pass that on...

Spencer Yost

> On Sep 20, 2017, at 2:32 PM, charlie hill <charliehill at embarqmail.com> wrote:
> 
> Spencer,
> 
> I've been out of town and neglecting my e-mail.
> I can't tell you how relieved I am that you got the 430 freed
> up.  Not as much as you I'm sure but relieved just the same.
> You had a great advisor in Dean VP.  He's the go to guy for
> things JD.  I was just scared to death that something between
> the back wheels and engine was going to break before the
> piston decided to let loose.   Congrats to Steve O for helping
> you with that.  It was truly a ATIS team effort with lots of good advice.
> 
> Job well done guys.  Now I have to apply some of that knowledge to
> my old Fairbanks Morse.  I know now what caused it to lock up.
> A few years ago I found a round tuit and decided it was time to
> install the new mixer I bought for that motor in 2006 and never installed.
> I promptly broke one of mixer flange bolts off in the head.  All of that
> happened about the time that a lot of personal things went haywire in
> my life and everything nonessential got put on the back burner.  I had 
> completely
> forgotten about the fact that the engine was sitting there with the intake 
> port
> completely open to the elements.  Even though it faces down it still got a 
> lot
> of moisture and debris built up in it over a couple of years of sitting. 
> Like you,
> I don't want to have to pull the head if I can help it.
> 
> We will see how that works out.  It's soaking now.  I'm in no hurry.
> 
> Charlie
> 
> -----Original Message----- 
> From: Spencer Yost
> Sent: Friday, September 15, 2017 9:37 PM
> To: Antique tractor email discussion group
> Subject: Re: [AT] 430V
> 
> It free!!!!!!
> 
> A solid 30° movement on my flywheel mark and a half an inch on my rod 
> measurement. However I have run out of things to jack against. Now all the 
> counter weights are all too close to the oil pump or the sides of blocks to 
> safely use the jack. So I have the tractor suspended on the rear wheels 
> again and I will leave it overnight.
> 
> Steve Offiler probably gets the prize for this one for bring up the geometry 
> idea. I got progress by abandoning jacking against the front counter weight; 
> which was not a perfectly tangential force, and went to the second cylinder 
> counter weight, which I could create a perfectly tangential force too. It 
> acted like it was never stuck and simply gave up the ghost with no problem. 
> Clearly, geometry is everything.
> 
> Unfortunately the second counter weight required very careful positioning, 
> as there is about three different things I could damage if anything slipped 
> or moved too quickly. And now it's too far up in the block to jack against.
> 
> 99% of the work is done. I am quite relieved!
> 
> Spencer Yost
> 
> 
> 
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