Gerry,
 
I have 71K miles on my 1.9 = rebuild. 
I used heads from 2 vehicles with over = 120K miles on the odometers.
They were both pitted.
I cleaned the head mating surfaces = thoroughly, applied JB Weld to fill the pits, then carefully sanded level with = a sheet of fine sandpaper taped to a sheet of glass.
I pulled the valves and lapped them = with a Sears Craftsman tool and valve grind paste.
I am not sure this was necessary.  = The valves and guides were fine.
I was impressed with the durability of = the valves and guides on my 1984 1.9.
That is all I did. JB Weld and, = a LOT of elbow grease.
 
I would steer clear of rebuilt/welded = heads. If yours are bad I would find some decent used heads, or buy new. 
I believe Halsey Automotive in = Portland, OR, had new heads for $300 and something.
 
Good Luck!
 
Scott Maurer  (Boise)
1984 Vanagon GL
1985 Isuzu Trooper
1988 Isuzu Trooper
----- Original Message -----
From: gerry = rafferty
To: vanagon@GERRY.VANAGON.COM
Sent: Monday, June 05, 2000 = 12:46 PM
Subject: Pitted Heads

I am rebuilding a engine core 1.9, and both heads look OK but = both pitted.From the archives,and what I intend to do,take to a = shop,rebuild,and jb weld the pits.
Can you tell me your experience you have gone this route?
Thanks
Gerry