[V8] Rear main seal leaking? Uh oh.....

William Gutierrez lundabo at msn.com
Thu Mar 24 21:57:28 EST 2005


Any advice on the torque settings for the oil pan and sump bolts?  I think I 
have similar drips and I would like to tighten them up while I have the pan 
off the car.

Thanks.

Bill

>From: dsaad at icehouse.net
>To: v8 at audifans.com
>Subject: Re: [V8] Rear main seal leaking?  Uh oh.....
>Date: Thu, 24 Mar 2005 09:22:28 -0700
>
>Wise counsel Dave san...
>
>Before I went and yanked out a motor, I would re-torque (using a real 
>torque
>wrench) all of the oil pan and sump bolts. To do this you are going to have 
>to
>remove the lower pan and possibly lower the sub frame. There are 
>approximately 6
>zillion bolts and you will have to buy a lower pan gasket.
>There is a junction point where the rear main seal cover, engine block, and
>upper sump all come together. This is a great place for a leak - and will 
>look
>like the rear main. (BTDT) As I recall, there are two hidden bolts in there
>somewhere that need to be tight.
>
>
>Dave
>
>Quoting Dave Head <v8q at bellsouth.net>:
>
> > Before doing that, remove the reference sensors on check for oil. My
> > hanger queen had a leak like that - but it was the upper sump gasket
> > (the cast piece above the oil pan) instead of the crank seal. It its the
> > rear main, it will sling oil. If its the sump gasket, it will just leak.
> >
> > Carter Johnson wrote:
> >
> > >That is correct - one or the other.  Sorry if I didn't
> > >make that clear.  Obviously, though, with everything
> > >apart, it makes sense to service the tranny.  It is
> > >*likely* the rear main - we replaced all the breather
> > >hoses in the hope that the leak was there when I did
> > >the timing belt.  When you're under the car, if you
> > >peer into the two holes at the bottom of the bell
> > >housing, you can see oil accumulating on the inards.
> > >Also, a close inspection after a hard run in and 30
> > >minutes running showed no leaks from up high, though
> > >the right bank is noiser (cam chain slack????) and the
> > >right bank distributer is a touch weepy.
> > >
> > >Carter
> > >
> > >
> > >--- Jeremy Ward <jward at mti-interactive.com> wrote:
> > >
> > >
> > >>I was getting leaking on the exhaust X and it was
> > >>coming from the rear
> > >>crank case breather hose, the head to head breather
> > >>hose, and possibly
> > >>the vacuum hose that goes up and over the air intake
> > >>at the back of the
> > >>engine (well, it was covered in oil and
> > >>deteriorated, possible from the
> > >>other oil leak).
> > >>
> > >>If it *is* the RMS, you should be seeing oil leaking
> > >>from the bottom of
> > >>the bell housing...  I think it has been said there
> > >>are holes you can
> > >>peek in and see oil if you have an RMS issue.
> > >>
> > >>Original recommendation was 10qts of oil, which was
> > >>dropped down to 8.25
> > >>qts.  Those who run 10 qts experience oil
> > >>consumption and it puts extra
> > >>pressure on the seals (including the RMS), whereas
> > >>those running 2 qts
> > >>less don't see much oil consumption...
> > >>
> > >>I replaced the RMS when I had the transmission out
> > >>for repair.  The
> > >>transmission shop didn't want to do it, told me if
> > >>it's not leaking,
> > >>don't touch it.  BS.  If you pay 11hrs x shop rate
> > >>to have the
> > >>transmission removed and reinstalled, there is no
> > >>better time to do the
> > >>RMS.  IIRC it was $150 for the plate with seal
> > >>already pressed in.  Some
> > >>on the list say you can get just the seal for much
> > >>less and press it in
> > >>your self, but in my opinion the extra money was
> > >>good insurance to
> > >>reduce the risk of future leaks from messing with it
> > >>in the first place.
> > >>
> > >>To clarify what you said Carter, to get to the RMS,
> > >>you have to either
> > >>pull the tranny (11 hr R&R) OR the motor (10 hr
> > >>R&R).  You don't have to
> > >>do both...
> > >>
> > >>Good luck man, and let me know if you need the P/N
> > >>for the RMS (I have
> > >>it somewhere...)
> > >>
> > >>Cheers,
> > >>
> > >>- Jeremy
> > >>
> > >>
> > >>
> > >
> > >W. Carter Johnson
> > >University of Rhode Island
> > >401-874-4947 office
> > >401-789-3217 home
> > >
> > >
> > >
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