<VV> typical idle vacuum reading?

[Lonny Clark]

If the entire bank is low, and you didn't build the engine, I would check
to see if you have matching heads. You might have a 102 on one side, and an
80 on the other. :)

Lonny
On Nov 2, 2011 9:48 PM, "Ramon Rodriguez III" <corvairgrymm at gmail.com>
wrote:

> Yep, I know it'd only pressurize the crank case if it is blowby, I just
> didn't have any past experience to make a real comparison of what I was
> getting in the way of crank case pressure.  My guess was that the pressure
> would build up enough to push oil out the dipstick tube eventually no
> matter what condition the engine was in (if the PCV is plugged), it's just
> a matter of how long and I'd never done it on another car for comparison.
> Also I didn't really pay very close attention to how long it took to
> happen.
>
> This engine was also overheated pretty good (by Missy) once around two
> years ago.  I'm hoping I can just re-ring it but don't know how likely that
> is.
>
> Ray R.
>
>
>
> On Wed, Nov 2, 2011 at 11:47 PM, Mark Durham <62vair at gmail.com> wrote:
>
> > Ray, if its valves, the leaks would be out those pipes, not into the
> > case. Case pressure is always blowby. Try squirting some oil in the
> > low cylinders then redoing the compression test. If the comp comes up,
> > that is verification of bad rings. You could also change the oil to a
> > heavier weight, say a 20w50, which will help to compensate for bad
> > rings, it works for awhile.  Mark Durham.
> >
> >
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