I did this with the help of a machine shop. I took the heads to them and
they disassembled them, soaked them and bead-blasted them (iirc). When I got
them back to do the JB work they were spotless, even down in the pits.

I agree that you want to do the JB work in a few passes- you probably won't
get it the first time. I filled in the odd spots in the pits first without
filling the whole pit, then I went back and roughed up the JB and filled it
the rest of the way. Sanded that down with and put on another coat, sanded
that down some. I didn't get into trying to surface it myself since the
heads were going back to the shop. They just milled off a tiny amount of the
surface and made it flat.

They went through the heads, ground the seats and did some other work and I
think it cost me a little over $100. Well worth the cost to my mind.

Good luck,
Robert

----- Original Message -----
From: "Jim Felder" <felder@KNOLOGY.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Tuesday, October 31, 2006 9:20 AM
Subject: Re: Repairing the piting in WBX heads.

> Wow Roger, we have a lot to talk about today, both on and off the list.
>
> First clean the heads with solvent. Probably don't need a wire wheel
> but if there's a lot of grease it would be worth it.
>
> Then use a small round metal burr on a dremel to do the same thing a
> dentist does and get the decay out of the holes.
>
> Mix JB weld and fill the holes. Don't necessarily try with one pass,
> it takes less time to do a pass at filling than to remove overfill.
>
> Get a can of spray glue and glue some 50 grit sandpaper to a piece of
> 3/4 ply or other similar flat surface. Best if you can use waterproof
> sandpaper. screw a one by two to the back of the board and lock that
> up in a workmate or similar. Flood the sandpaper with water and scrub
> the head (flat side down, of course) on the sandpaper until the JB
> weld is flush with the head. Rinse, repeat. You can easily tell the
> difference in color of the sanded JB and that which hasn't quite been
> built up to the surface. I can send you picture is you like, assuming
> I can find them.
>
> Jim
>
>
> On Oct 31, 2006, at 11:09 AM, roger sisler wrote:
>
>> Well, I got a couple of heads with 62K miles , from a 1.9. I want
>> to clean them up and regrout the pitting with JB WELD stick. Where
>> do I begin? I want to clean them up,first. a wire wheel? willthat
>> damage the gasket mating surface? Dont think so, because you gotto
>> sand theJB .How do I do this?Thanks,Roger
>>
>> ---------------------------------
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