I didnt mean new seals may result in more compression just that a rebuilt
head would. If the valve seals end up being the problem they are easy
enough to replace without a major teardown.
Greg Conner
1996 RC
3.9 hybrid
>From: "Jon N. Benignus" <blkwidow1@primary.net>
>Reply-To: dakota-truck@dakota-truck.net
>To: <dakota-truck@dakota-truck.net>
>Subject: Re: DML: Recommendation Needed
>Date: Sun, 18 Jul 2004 19:59:31 -0500
>
>
>
>
> > The extra cylinder pressure created by
> >> properly sealing valves and seals may start reaking havok on those old
> >> rings...
>New valve seals would have nothing to do with raising compression. It would
>only prevent oil from getting past the valve stems.
>
>Gary, try doing a "wet" compression check on the low pressure cylinders. If
>the pressure comes up a bunch, then you are looking at rings. If the
>comprssion comes up only 5 or so psi, you are looking at bad valves due to
>a
>poor head rebuild. Just replace the heads in that case.
>You may also have a bad head gasket causing the compression to be down if
>they are adjacent cylinders.
>
>Jon
>STL MO
>
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