If you have a good set of .020's (check the ring lands) it may be prudent
to sleeve the block.
Richard Crump
----- Original Message -----
From: Adam Arabian <arabian@allegronet.com>
To: mglist <MGS@autox.team.net>
Sent: Friday, March 24, 2000 12:20 PM
Subject: TD Piston sizes and general questions
> Went with a friend of mine to a machine shop where he works yesterday.
> Cleaned off the pistons and took some measurements and lo and behold I'm
> already at .020 over (also visibile in the 020 punched in the top of the
> piston which wasnt previously visible due to the crud buildup. Not
> reported by the DPO... though even he may not have known since it
> hasn't been drivable for years).
>
> This presents a problem as the rust in the cylinders is pretty bad, so
> an extra .020 MAY not be enough to clean up the surfaces. Moss lists
> pistons available up to .040 over, and then a .120 over, though the
> latter scares me. Is there anything in between those available
> anywhere?
>
> A few other questions as well:
>
> 1. The TD workshop manual implied that .020 over could have come that
> way from teh factory. True? This is a 51 or 52 TD (DPO said 52,
> though based on the engine and body number listing from clausager its
> probably mid 51). This is more of a personal edification thing than
> anything else.
> 2. Assuming it hasnt already been done, I was planning on shortening
> the head as specified in the factory mods to increase compression
> ratio. Would this be a bad idea if I have to go to .040 or .120 over?
> I'm guessing so, but...
>
> If anyone has any thoughts on these, I'd quite like to know. I'd really
> prefer to not have to max it out to the 120 over. Kinda scares me.
> Though it probably wouldnt be too much of a problem as it will only see
> a few thousand miles a year, I'd rather have it last as long as possible
> without exploding.
>
> TIA,
> A. Arabian
>
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