Is that a cracked cylinder head gasket that's stuck in the head?

Chris

Dnia 09.02.2017 o godz. 20:18 David <fjazzbass@GMAIL.COM> napisał(a):

> Hi Dennis, all...
> 
> After a quick cleaning of the head, a tiny crack on the inside of the
> shoulder- perpendicular to the primary surface, but along the inside of
> where the cylinder slides in....
> 
> Also, these were reman heads... it was apparent where repair had been made
> in between the valves- not so much sloppy, but yeah- not what I would have
> liked to see.
> 
> So I'm thinking of replacing it with new- debating  doing the other
> side....
> 
> https://drive.google.com/open?id=0B15gAxRzC2oqRGRkVTBQa0dudEk
> 
> Here's a link to a picture of the crack in the lower left side....
> 
> Thanks for all the advice!!!
> 
> Dave
> 
> On Thu, Feb 9, 2017 at 5:24 PM Dennis Haynes <d23haynes57@hotmail.com>
> wrote:
> 
>> Head gasket (combustion) failures are a symptom. Usually they are the
>> result of a fitment problem or the heads came loose. Maybe not really loose
>> but for some reason the head studs failed to maintain adequate tension on
>> the heads due to combustion pressures or the thermal cycles.
>> 
>> In order for the system to seal properly both the cylinder tops and the
>> head seats need to be near perfect. The cylinders also need to be perfectly
>> paralleled and in plane with the adjacent one. The cases can warp or twist
>> and the cylinder bases can get damaged making this impossible. Rare for the
>> Waterboxer but very common for the air cooled engines.
>> 
>> You need to look at everything including the possibility the studs are no
>> good and need to be replaced. Before final assembly test fit a head and
>> make sure all the studs/nuts can torque up. Any that seem to keep
>> stretching need to be replaced.
>> 
>> Some pictures am allow us to give some better answers. You can do this
>> right or you will get to do it again and curse out the Water Boxer.
>> 
>> Dennis
>> 
>> 
>> 
>> -----Original Message-----
>> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf
>> Of Dave Bohannan
>> Sent: Tuesday, February 07, 2017 1:05 PM
>> To: vanagon@GERRY.VANAGON.COM
>> Subject: The root of all bubbles, low compression and evil itself? 1.9
>> head off...
>> 
>> Smart volks…
>> 
>> I finally got sick of bleeding “air” from the coolant system and suspected
>> something was up…compression test looked great on 3, bad on one… took head
>> off and lo and behold, yep I’ve got blown head gasket that allowed
>> combustion gases into coolant…
>> 
>> So, I’ve looked at the outside of the cylinder sleeve and it looks
>> corroded- but the actual head itself doesn’t…do I need to “re-sleeve” it?
>> 
>> In the least I think I need a new head? The “gasket rings” looked
>> good…just discoloration around the outside on the head which showed where
>> combustion gases were coming out...
>> 
>> I don’t know the right questions to ask here…anyone???
>> 
>> Dave
>> 1.9 GL (half headless….)
>>