Dennis,

thank you for the good tips. I used glass when I basted the heads (started with walnut but it clogged the nozzle) , but I left the old sealing rings in place.  What is Loctite 508? Is at non setting sealant?

To be honest, I really don't see how the little o-ring at top of cylinders is expected to do much. The combustion sealing ring (in head) should keep the combustion from the coolant right? If that seal is not good then the thin o-ring ain't going to hold things back, right? And conversely, if the thin o-ring fails, the coolant isn't going to get past a good sealing combustion sealing ring.

I suppose the o-ring keeps coolant from a portion of the head area, but to what end?

anyhoo, when I say quick and dirty, I don't mean to imply I'm not going to try and do the best job I can. It was meant to imply that I was just doing the top end to get another year, or two, from the engine.

cheers

alistair

On 2013-05-22, at 7:03 PM, Dennis Haynes wrote:

> I know this sounds a bit crazy but pulling the heads should not be taken
> lightly and a quick and dirty job usually just means you need to have a good
> towing plan. In the grand scheme of things the outer gasket only holds the
>