There is no reason to take the cylinders off at all when doing a head
gasket replacement.  If you do then you are going to struggle to put
them back on (it can be done) and possibly break a ring or two trying to
do so.  I have done many, many head gasket replacement jobs over the
years and I can say that out of all of them I have had 0 ever have a
problem from the lower o-ring not being replaced.  I have only ever had
1 actually come back to the shop and that was years ago when I didn't
know that with all the fuss about the heads having pits, that the case
side needs to be pit-free as well (just as important).  Of course about
95% of the time I am reassembling the engine with brand new heads (AMC)
and I think this also helps to eliminate possible problems.

Thats my 2cents,
Ken Wilford
John 3:16
www.vanagain.com

Jere Hawn wrote:

>Hi All,
>
>
>
>Just my luck the day I scheduled to put it back together it snows.  So I
>have a slight delay. And I have been reading up on the process and now have
>a few questions:
>
>
>
>1.      I bought the whole engine gasket set from Bus Depot and the packet
>does not list what is inside so I am left to guess
>
>a.      I have upper and lower cylinder o-rings: thin green ones and thick
>black ones.  Which are the upper and lower?
>b.      Does any one have a list of what the gaskets are?  I can kind of
>figure them out but knowing would be better
>
>2.      Is there any reason to take the jugs out if it is just a head gasket
>leak?\
>
>
>
>TIA
>
>Jere
>
>90 GL/Carat-a-version
>
>
>