It could be the rear seal on the engine is leaking.
Mike
----- Original Message -----
From: "ian miller" <datsun661600@hotmail.com>
To: <horne@cs.utexas.edu>
Cc: <datsun-roadsters@autox.team.net>
Sent: Tuesday, August 13, 2002 11:23 AM
Subject: Re: Summary and question # 2
> Ok, maybe this is jumping ahead a little, I was going to make this one
> question #3, but it need to be addressed now. After my 30 minute drive on
> saturday I parked the car in the garage. The next morning there eas 1/4 a
> quart of gear oil under the car. My diff has always leaked but apparently
> sitting for 4 years then a run down the high way was more than the seal
> could handle. The interesting part is when I checked the diff fluid level
> it was still full. So I checked the tranny thinking the oil had leaked
> there and ran down the driveshaft. Nope tranny was fine and drive shaft
was
> dry. I'm assuming the oil on the floor was from the diff it just wasn't
> enough for me to notice a change in the fluid level. So maybe redline
will
> work to quiet the noise but this could get expensive past putting 1/4 a
> quart of redline in everytime I park it. Can the diff be re-sealed
easily,
> in the car? The noise I have is very loud, should I be worried abouthte
diff
> exploding? Does anyone have a diff in decent condition lying around they
> want to sell?
>
> Thanks
> Ian
>
> >From: "Patrick J. Horne" <horne@cs.utexas.edu>
> >To: ian miller <datsun661600@hotmail.com>
> >CC: <datsun-roadsters@autox.team.net>
> >Subject: Re: Summary and question # 2
> >Date: Tue, 13 Aug 2002 09:25:47 -0500 (CDT)
> >
> >Ian,
> >
> >Concerning the whine, I have a whine on my car that seems to come from
> >behind me that stops when I push in the clutch. The differential can
> >produce this kind of noise when the gears are under load and be quiet
when
> >they are coasting.
> >
> >This kind of noise can be difficult to diagnose because the driveshaft
can
> >telegraph the noise to other parts of the drivetrain. You can pull the
> >bottom plate on the trans and check the lay shaft bearings for any play
at
> >all. The shaft should have only a few thousandths of end play and no side
> >play. If there is play, that is probably the problem. I don't think this
> >is the problem though, because gear whine usually happens when the gears
> >are under load. The lay shaft/cluster gears are under load in 3rd
gear,but
> >not in 4th gear. I still suspect the differential.
> >
> >Peace,
> >Pat
> >
> >- Support Habitat for Humanity, A "hand up", not a "hand out" -
> >
> >Pat Horne, Network Manager, Shop Supervisor, Future planner, CS Dept,
> >University of Texas, 1 Texas Longhorns, #C0500,Austin, Tx. 78712 USA
> >voice (512)471-9730, fax (512)471-8885, horne@cs.utexas.edu
> >
> >On Tue, 13 Aug 2002, ian miller wrote:
> >
> > > Thanks to everyone who responded to my last question. Here is what I
> > > concluded:
> > > Ammeter is not showing the actual state of the caharging system
> >since i
> > > no longer use the white wire. I need to install a voltmeter instead.
I
> > > probably have a ground proble form the engine to the frame. The
> >alternator
> > > is connected tot he battery with a 10 GA wire and 30 amp fuse. My
> >battery
> > > is connected to the motor with a braided strap but I don't believe
there
> >are
> > > any motor to frame connections. If this doesn't fix it then it must
be
> > > those darn aliens again.
> > >
> > > My next proble is the humm/wine it makes above 40 MPH in 3rd or 4th
> >gear.
> > > It has always done this, but I never planned on taking it on a 5 hour
> >trip
> > > to the Glen before so it didn't worry me. The humm (very loud) is
only
> > > present when the clutch is released in 3rd or 4th gear. If I depress
> >the
> > > clutch it goes away. I had the transmission professionaly rebuilt,
but
> >the
> > > man doing the work died of a heart attack halfway through and his son
> > > finishes it.
> > >
> > > Originally my guess was the rear differential, but the sound is
infront
> >of
> > > that and the diff would make the noise regardless of the clutch being
> > > disengaged. So I'm stumped!
> > >
> > >
> > > Thank you,
> > > Ian Miller
> > > 66 1600 (stroked)
> > >
> > >
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> > >
> >
>
>
>
>
> Ian Miller
> 66 1600 (stroked)
>
>
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