n600 stuck piston, need advice

[tgm_enterprizes]

On my 1970 n600 that sat for 30 years, the driver side piston is really stuck in the cylinder.
so far I have tried
1.Penetrating oil (2 months , no difference).
I now have the engine out, the head off and the piston looks like it has melded against the cylinder wall. (no gap, it looks like its hard corroded to the wall. (Odd since the cylinder wall is smooth and the head looks great. I guess a little water got in or somehow dripped in it and caused this issue)
I tried beating the piston, drilling the top outer edge and more beating. (piston is now ruined, cylinders are probably hone-able)
Then I heated up the piston top using a mapp gas torch, more beating.
Then an air chisel around the top edge, more beating. All with no sign of it loosening.
My thought is now running to me cutting the cylinder vertically (down the front and down the back) and pulling it off the piston.
Piston is 1.6 inches down from the top edge of the cylinder. I have an aluminum bar between the block and steel liner at the bottom of the cylinder. (So the rod is not at the bottom of it's stroke).
If I had an acetylene torch, I would melt the piston out, but don't have one.
At some point, I will give up and get another engine. (I really wanted this to remain a numbers matching since it's a 1 owner texas car, 30k miles).
Does (has) anyone have this type of stuck piston and what did you do?
Richard

[JOHN BURKHIMER]

i thought someone used a spark plug, cut off the top, and welded a great fitting on it.  then, applied grease.  the pressure broke the cylinder loose?

--- On
Tue, 1/18/11, tgm_enterprizes

wrote:
> From: tgm_enterprizes
> Subject: [anzhonda600owners] n600 stuck piston, need advice > To: anzhonda600owners@yahoogroups.com > Date: Tuesday, January 18, 2011, 7:29 PM
> On my 1970 n600 that sat for 30 years, the driver side piston is really stuck in the cylinder.
> so far I have tried
> 1.Penetrating oil (2 months , no difference).
> I now have the engine out, the head off and the piston looks like it has melded against the cylinder wall. (no gap, it looks like its hard corroded to the wall. (Odd since the cylinder wall is smooth and the head looks great. I guess a little water got in or somehow dripped in it and caused this issue) > I tried beating the piston, drilling the top outer edge and more beating. (piston is now ruined, cylinders are probably hone-able) > Then I heated up the piston top using a mapp gas torch, more beating.
> Then an air chisel around the top edge, more beating. All with no sign of it loosening.
> My thought is now running to me cutting the cylinder vertically (down the front and down the back) and pulling it off the piston.
> Piston is 1.6 inches down from
> the top edge of the cylinder. I have an aluminum bar between the block and steel liner at the bottom of the cylinder. (So the rod is not at the bottom of it's stroke).
> If I had an acetylene torch, I would melt the piston out, but don't have one.
> At some point, I will give up and get another engine. (I really wanted this to remain a numbers matching since it's a 1 owner texas car, 30k miles).
> Does (has) anyone have this type of stuck piston and what did you do?
> Richard

[JOHN BURKHIMER]

....i mean grease fitting

--- On
Tue, 1/18/11, tgm_enterprizes

wrote:
> From: tgm_enterprizes
> Subject: [anzhonda600owners] n600 stuck piston, need advice > To: anzhonda600owners@yahoogroups.com > Date: Tuesday, January 18, 2011, 7:29 PM
> On my 1970 n600 that sat for 30 years, the driver side piston is really stuck in the cylinder.
> so far I have tried
> 1.Penetrating oil (2 months , no difference).
> I now have the engine out, the head off and the piston looks like it has melded against the cylinder wall. (no gap, it looks like its hard corroded to the wall. (Odd since the cylinder wall is smooth and the head looks great. I guess a little water got in or somehow dripped in it and caused this issue) > I tried beating the piston, drilling the top outer edge and more beating. (piston is now ruined, cylinders are probably hone-able) > Then I heated up the piston top using a mapp gas torch, more beating.
> Then an air chisel around the top edge, more beating. All with no sign of it loosening.
> My thought is now running to me cutting the cylinder vertically (down the front and down the back) and pulling it off the piston.
> Piston is 1.6 inches down from
> the top edge of the cylinder. I have an aluminum bar between the block and steel liner at the bottom of the cylinder. (So the rod is not at the bottom of it's stroke).
> If I had an acetylene torch, I would melt the piston out, but don't have one.
> At some point, I will give up and get another engine. (I really wanted this to remain a numbers matching since it's a 1 owner texas car, 30k miles).
> Does (has) anyone have this type of stuck piston and what did you do?
> Richard

[dana]

That was this engine, I swear it moved the piston, but it ended up full of grease and still stuck. It was a good idea, but you should use diesel rather than grease.
What I didn't tell was that my buddy tried towing this car using a tow strap. I tried my best to get it to break free, but no go. In addition, I suffered a broken back (L3 vertical compression fracture) due to whiplash in the towing exercise.
Now that we all know what not to do&.
Richard

[brad fenn]

I was thinking of that,but he said the cylinder head is already off. So best I can think of is to take it somewhere that has an air hammer and try to beat is loose with that,seeing as how the piston is already ruined.  The cylinder set may be salvaged.
From:
JOHN BURKHIMER To:
anzhonda600owners@yahoogroups.com Sent:
Tue, January 18, 2011 6:43:57 PM Subject:
Re: [anzhonda600owners] n600 stuck piston, need advice
....i mean grease fitting

--- On
Tue, 1/18/11, tgm_enterprizes

wrote:
> From: tgm_enterprizes
> Subject: [anzhonda600owners] n600 stuck piston, need advice > To: anzhonda600owners@yahoogroups.com > Date: Tuesday, January 18, 2011, 7:29 PM
> On my 1970 n600 that sat for 30 years, the driver side piston is really stuck in the cylinder.
> so far I have tried
> 1.Penetrating oil (2 months , no difference).
> I now have the engine out, the head off and the piston looks like it has melded against the cylinder wall. (no gap, it looks like its hard corroded to the wall. (Odd since the cylinder wall is smooth and the head looks great. I guess a little water got in or somehow dripped in it and caused this issue) > I tried beating the piston, drilling the top outer edge and more beating. (piston is now ruined, cylinders are probably hone-able) > Then I heated up the piston top using a mapp gas torch, more beating.
> Then an air chisel around the top edge, more beating. All with no sign of it loosening.
> My thought is now running to me cutting the cylinder vertically (down the front and down the back) and pulling it off the piston.
> Piston is 1.6 inches down from
> the top edge of the cylinder. I have an aluminum bar between the block and steel liner at the bottom of the cylinder. (So the rod is not at the bottom of it's stroke).
> If I had an acetylene torch, I would melt the piston out, but don't have one.
> At some point, I will give up and get another engine. (I really wanted this to remain a numbers matching since it's a 1 owner texas car, 30k miles).
> Does (has) anyone have this type of stuck piston and what did you do?
> Richard

I thought

[JOHN BURKHIMER]

an old-dog told me once to try heating oil...let it soak a few weeks

--- On
Tue, 1/18/11, JOHN BURKHIMER

wrote:
> From: JOHN BURKHIMER
> Subject: Re: [anzhonda600owners] n600 stuck piston, need advice > To: anzhonda600owners@yahoogroups.com > Date: Tuesday, January 18, 2011, 7:43 PM
> ....i mean grease fitting
> --- On
> Tue, 1/18/11, tgm_enterprizes
>
> wrote:
> > From: tgm_enterprizes
> > Subject: [anzhonda600owners] n600 stuck piston, need advice > > To: anzhonda600owners@yahoogroups.com > > Date: Tuesday, January 18, 2011, 7:29 PM
> > On my 1970 n600 that sat for 30 years, the driver side piston is really stuck in the cylinder.
> > so far I have tried
> > 1.Penetrating oil (2 months , no difference).
> > I now have the engine out, the head off and the piston looks like it has melded against the cylinder wall. (no gap, it looks like its hard corroded to the wall. (Odd since the cylinder wall is smooth and the head looks great. I guess a little water got in or somehow dripped in it and caused this issue) > > I tried beating the piston, drilling the top outer edge and more beating. (piston is now ruined, cylinders are probably hone-able) > > Then I heated up the piston top using a mapp gas torch, more beating.
> > Then an air chisel around the top edge, more beating. All with no sign of it loosening.
> > My thought is now running to me cutting the cylinder vertically (down the front and down the back) and pulling it off the piston.
> > Piston is 1.6 inches down from
> > the top edge of the cylinder. I have an aluminum bar between the block and steel liner at the bottom of the cylinder. (So the rod is not at the bottom of it's stroke).
> > If I had an acetylene torch, I would melt the piston out, but don't have one.
> > At some point, I will give up and get another engine. (I really wanted this to remain a numbers matching since it's a 1 owner texas car, 30k miles).
> > Does (has) anyone have this type of stuck piston and what did you do?
> > Richard