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 piston rings 
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Firing on two.

Joined: February 10th, 2009, 10:12 pm
Posts: 155
Location: viseu - PT
Post piston rings
I'm changing the piston rings on my visa engine as well as trying to eliminate the usual oil leaks around the cilinders.
Could any expert give me some advice?
Thank you.


November 21st, 2018, 1:21 pm
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Joined: March 21st, 2013, 12:04 am
Posts: 722
Location: Exeter, Devon
Post Re: piston rings
Hi Vitor

I wouldn't call myself an expert, but first off, what are you hoping to gain from doing the ring change?

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If you can't fix it with a hammer, it's probably electrical (or, an electric fuel pump!) ....


November 21st, 2018, 2:56 pm
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Firing on two.

Joined: February 10th, 2009, 10:12 pm
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Location: viseu - PT
Post Re: piston rings
Stop oil consumption, mainly


November 21st, 2018, 3:35 pm
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Joined: March 21st, 2013, 12:04 am
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Post Re: piston rings
So, are the pistons and bores ok?

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If you can't fix it with a hammer, it's probably electrical (or, an electric fuel pump!) ....


November 21st, 2018, 4:11 pm
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Firing on two.

Joined: February 10th, 2009, 10:12 pm
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Location: viseu - PT
Post Re: piston rings
It's not me who's doing the job. It´s a friend who is kind of 2cv mechanics expert.
He showed me the parts and said everything looked OK (until now ;) ) but the piston rings showed some signs of wear, which I/he guess(es) is normal after 160.000 kms... aggravated by the fact that the engine has been running on LPG for maybe 100.000 kms.


November 21st, 2018, 7:43 pm
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Joined: March 21st, 2013, 12:04 am
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Post Re: piston rings
That sounds plausible. :)

I would not have thought LPG would affect the rings, more likely the valves. :)

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If you can't fix it with a hammer, it's probably electrical (or, an electric fuel pump!) ....


November 21st, 2018, 8:02 pm
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Firing on two.

Joined: February 10th, 2009, 10:12 pm
Posts: 155
Location: viseu - PT
Post Re: piston rings
As far as I could see the valves don't look worn out, but they weren't disassembled yet...
Anyway this is the 2nd engine (the 1st one was a 602) I've been using running on LPG, and I'm not so sure that gas is a bad option.
Besides, it is supposed to be not so pollutant as gasoline...
My aim was to use an electric kit for the 2cv (like they do in Paris) but I couldn't find it yet.


November 21st, 2018, 9:43 pm
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Joined: March 21st, 2013, 12:04 am
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Location: Exeter, Devon
Post Re: piston rings
An electric 2CV sounds cool. 8-)

I was running my Bedouin on LPG for a while. It wasn't set up correctly, and I eventually had running problems with the engine. Back on petrol now, but I hope to go back to LPG but with an injection system soon.


Regarding piston rings, I guess you can change them and try it. ;)

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If you can't fix it with a hammer, it's probably electrical (or, an electric fuel pump!) ....


November 21st, 2018, 10:04 pm
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Joined: April 9th, 2010, 12:21 am
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Location: West Sussex
Post Re: piston rings
How are the cylinder bores? (Visa engines had a Nikasil coating).


November 22nd, 2018, 12:28 am
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Joined: July 10th, 2010, 12:35 pm
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Post Re: piston rings
vitor wrote:
As far as I could see the valves don't look worn out, but they weren't disassembled yet...
Anyway this is the 2nd engine (the 1st one was a 602) I've been using running on LPG, and I'm not so sure that gas is a bad option.
Besides, it is supposed to be not so pollutant as gasoline...
My aim was to use an electric kit for the 2cv (like they do in Paris) but I couldn't find it yet.

I think this is what you need.
But I assume it costs more than you want to spend on that .
https://www.mehariclub.com/fr/eden-electrique/

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November 22nd, 2018, 9:08 am
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