Well I always took "heads redone at xxxxx" to mean either one of two   
things:
1- Seals and heads replaced
2- Seals replaced and the heads sanded down and filled with that liquid   
weld

I had number 2 done and saved about $800.  Put about 7000 miles since,   
without a drop!

I suppose that number one would be better but number two is cheaper.

Nate El Great
85 GL 159,000 and dropless

 ----------
>From:  vanagon[SMTP:vanagon@lenti.med.umn.edu]
Sent:  Wednesday, March 05, 1997 1:00 PM
To:  Multiple recipients of list
Subject:  Doing the heads

When someone says the heads were 'done' at xxxxx miles do they mean the
head gaskets were renewed, or that the heads were replaced, or that they
were simply tightened up?

My 1984 Caravelle GL (183k miles) had a recon engine in 1991 which has   
now
done 76k miles. I put a new expansion tank pressure cap on, and now there
is always a bit of air in the tank which is never purged. Also the engine
is sounding more like my previous air-cooled. Does this indicate leaking
heads?

Is there _preventative_ maintenance one should do on the heads, or can   
you
only wait until there is a disaster?

Lionel Tun
lionel@ark.prestel.co.uk