>
> > > What is the diagnosis for the belly pan/PING issue on 5.2l
> > engines? (I
> > know
> > > I'll have to TELL the dealer how to do it!)
> >
> > SOURCE: MoPar Performance News, Tech Tips, by Larry Shepard - Mopar
> > Chief
> > Engineer
> >
> > The problem is related to the gasket that seals the cover to the
> > bottom of
> > the manifold on the Magnum engines. If this gasket does not seal
> > properly,
> > the engine can suck in oil vapors from the lifter valley and cause
> > the
> > engine to detonate due to the aggressive spark advance curve used in
> > the
> > Magnum computers. Remembering where this gasket is located, this is
> > not the
> > first thing that you want to do. It could be expensive and time
> > consuming
> > to pull off the intake to check. However, we have a helpful tip. To
> > determine if there is a proper seal, remove the PCV (Positive
> > Crankcase
> > Ventilation) valve from the right hand valve cover, but leave the
> > PCV valve
> > attached to the hose from the intake manifold. Remove the breather
> > hose
> > from the left-hand valve cover that goes to the air cleaner.
> > Plug-off the
> > connection at the valve cover. With the engine idling, place your
> > thumb
> > over the opening where the PCV valve was located. After 10-15
> > seconds you
> > should feel pressure, which indicates that the gasket is sealing. If
> > you
> > feel a vacuum, the gasket is leaking and needs to be repaired. The
> > best
> > repair is to remove the intake manifold, remove the bottom plate and
> > discard
> > the failed or leaking gasket. Clean all the surfaces thoroughly, and
> > apply
> > a bead of Mopar RTV sealant, PN 82300235 to the bottom of the
> > manifold.
> > Re-install the plate, let dry and then re-install the manifold.
> > Refer to
> > the service manual for manifold installation tips and details.
> >
Dave at Hughes Engines told me that the problem with the plenum gaskets are
that the bolts are to long and that adding a washer will solve the problem.
By the way, the stage 2 Magnum intake I installed kicks ass. I was a little
concerned about losing some bottom end, but Na. not a bit. The truck pulls
much harder above 3000 rpm's.
Level Ten shift kit and Protorque converter goes in Wednesday. Then it's
ported RT heads and cam. This 5.2 is smokin.
Robert Parrish
Richmond Va.
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