Re: [DML] Re: Uh oh

[Martin Gutkowski <webmaster@xxxx>]

The gaskets on the liners do not fail. The only time they fail is if you 
move the liners without the heads in place. If you're not careful, you 
can do this when removing the head.... The trick is to knock the front 
dowel down and break the gasket seal with a rotational movement rather 
than lifting them off. On the car we're working on now (engine work now 
finished) the heads were so bad the machine shop replaced all the valves 
and re-ground the seats. You couldn't tell from the gaskets where the 
problem was.

It's very important you get the heads faced before replacement - have a 
machine shop skim off a few microns and check the surface is flat (not 
warped). At the very least you have an excellent surface for the new 
gaskets. Also have them pressure-test for cracks. If you have valves 
replaced, you have to re-set the rocker clearances too - I hope you 
marked which of your rocker arm sets were R and which were L :-)

Martin

cruznmd wrote:

> Reeeeeeeeeeeeaaaaaaaaaaally???
>
> Now isn't that interesting? How do I know that that isn't my problem 
> in the first place? The whole reason I'm taking the engine apart now 
> is due to those symptoms. The head gasket I've pulled right now shows 
> no detectable damage. If the other head also doesn't seem to show any 
> damage, should I suspect this?
>
> Or do the lower liner seals not blow out like that?