[Vwdiesel] Decoking pistons

[mark shepherd]

Sorry not meaning to bump this , but my linking skills are somwhat lacking, 
and most of the pictures weren't visible, [to me at least!]
Click on the revealed picture!
http://img255.imageshack.us/g/piston1andstuckrings.jpg/

Mark


----- Original Message ----- 
From: "mark shepherd" <mark at shepher.fsnet.co.uk>
To: "mark shepherd" <mark at shepher.fsnet.co.uk>
Sent: Friday, September 03, 2010 2:08 AM
Subject: Re: [Vwdiesel] Decoking pistons


>
> At long last I got round to uploading some pictures. Here is a picture of 
> a set of rings. Not sure if they were of the 160psi cylinder, or one of 
> the two  200psi ones, or even the 270psi one.  Has anyone run with bigger 
> gaps? The pressure was less than my old vw gasser. Scrolling should give 
> the other pictures, in no particular order, but titled according to what 
> they are.
>
> http://img809.imageshack.us/f/imgp9942.jpg/
>
> Subject: [Vwdiesel] Decoking pistons
>
>
>>
>> Greetings,
>> Hopefully someone will be up on the other side of the world.
>>
>> Just taken my pistons out for a rering, I was having a 'little difficulty 
>> starting. Fuel economy averaging about 45 to 48 UK mpg. 3 pistons have 
>> single stuck rings,top or middle some of the gaps could be as big as 
>> 1/16th- 1/8th of an inch!!
>> Bores good, and hastings rings fit to middle of VAG gap spec.  Pistons 
>> are great and so are all bearings. It loks like my nocking for the last 
>> 20 to 30 ooo miles was exhaust valve clash. I always set belt accurately, 
>> but I overskimmed the head, and so this mayexplain that.
>>
>> However my question is this.
>> Should I remove the thin layer of carbon deposit between top ring and 
>> piston face?
>>
>> Regards
>> Mark
>> _______________________________________________
>> Vwdiesel mailing list
>> Vwdiesel at vwfans.com
>> http://www.audifans.com/mailman/listinfo/vwdiesel
>>
>
>
>