[V8] Radiator Hose Question

[Klein, Nathan P]

Ingo,

The upper hose has blown in a different place each time.  The first, it
was almost in the middle of the hose.  The second, it was on the curved
part where it goes into the radiator.

You speak of excessive crankcase pressure.  Could this be why my oil
pressure gauge goes way past the 5-bar mark every time I'm on the
highway or step on the gas leaving a red light?  It's about 2.5-3 bar at
idle.  Been that way since I bought it.  Or does that not have anything
to do with it? 

The cap is new - I bought it a couple of months ago when I replaced the
heater core (the fittings of which had also fractured).

Yikes.

-----Original Message-----
From: Ingo Rautenberg [mailto:i.rautenberg at waratap.com] 
Sent: Monday, January 09, 2006 12:48 PM
To: Klein, Nathan P; v8 at audifans.com
Subject: Re: [V8] Radiator Hose Question

Nathan,

I don't like it.  It sounds to me like you are developing excess
pressure in the cooling system and that can be only due to the following
things:

1.  Excessive crankcase pressure due to cyl. head gasket leaking
pressurized air into the cooling system

2.  Defective coolant expansion pressure cap

3.  Clogged radiator

I hope it's just the cap.

Ingo

PS --  Where is your upper radiator hose failing?  Maybe you can
integrate some plumbing pipe/fittings as a temporary measure before you
destroy the next one.

----- Original Message -----
From: "Klein, Nathan P" <nathan.p.klein at lmco.com>
To: "Ingo Rautenberg" <i.rautenberg at waratap.com>; <v8 at audifans.com>
Sent: Monday, January 09, 2006 1:20 PM
Subject: RE: [V8] Radiator Hose Question


> It's actually two things.
>
> It was the upper radiator hose blew again - twice in the last six
months
> - I can get anther one of those.  But man they're high.
>
> On the coolant return hose, the actual piece of plastic that goes into
> the radiator is broken.  I can tell it's a screw-type fitting, but the
> nipple is fractured on the radiator end.
>
> The return hose itself looks okay, and so does the nipple into the
tank.
> The coolant was circulating okay before the upper radiator hose blew
and
> shot coolant everywhere.
>
> Any ideas?
>
> -----Original Message-----
> From: Ingo Rautenberg [mailto:i.rautenberg at waratap.com]
> Sent: Monday, January 09, 2006 11:55 AM
> To: Klein, Nathan P; v8 at audifans.com
> Subject: Re: [V8] Radiator Hose Question
>
> Nathan,
>
> The Radiator has a nipple fitting on the radiator to which the hose
that
> goes to the expansion tank is attached.  Any auto parts place will
have
> hose that will work.  The only problem is how much of the radiator
> nipple is broken/fractured, as it must be able to withstand the
> pressures generated by the cooling system.  It would be far better if
> the nipple at the expansion tank were broken ;-)  Then you'd just
> replace the tank and not have to replace the radiator.
>
> Good luck.
>
> Ingo
> ----- Original Message -----
> From: "Klein, Nathan P" <nathan.p.klein at lmco.com>
> To: <v8 at audifans.com>
> Sent: Monday, January 09, 2006 9:31 AM
> Subject: [V8] Radiator Hose Question
>
>
> > I lost my top radiator hose again yesterday and, while trying to get
> it
> > off, the coolant return hose popped off out of the radiator mount
and
> > the piece of plastic on the end was broken.
> >
> > Is the coolant return hose from the top of the radiator back to the
> > reservoir an integral part of the radiator, or can that part be
> > purchased separately?  I can't tell, because the plastic on the end
of
> > that hose is fractured.
> >
> > Thanks, Nathan
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