[s-cars] Viscous fan clutch failure?

Fri May 11 22:17:44 EDT 2007

I'm assuming you mean Scirocco...which begs the question:

What year Scirocco came with a VR6?

Or did you mean Corrado? :-)

--- Mark Strangways <StrangConst at rogers.com> wrote:

> It's be said that the fan from a VR6 Sirocco is the one to use.
> Like I said earlier, I will scoop what's left of the dual set-up on
> the V10.
> 
> 
> ----- Original Message ----- 
> From: "Theodore Chen" <tedebearp at yahoo.com>
> To: "Mark Strangways" <StrangConst at rogers.com>; <josh at spiny.com>; 
> <S-CAR-List at audifans.com>; <djdawson2 at aol.com>
> Sent: Friday, May 11, 2007 8:37 PM
> Subject: Re: [s-cars] Viscous fan clutch failure?
> 
> 
> > yes, there's some parasitic drag from the mechanical fan.  the
> advantage
> > of the electric fan is that it operates on-demand, and when the car
> is
> > moving, it will likely not be running because there will be enough
> airflow
> > through the radiator.
> >
> > replacing the mechanical fan with an electric fan is probably worth
> a
> > few hp - if the electric fan isn't running.
> >
> > i replaced the mechanical fan on my mustang with an electric fan,
> but
> > primarily for reliability reasons.  the mechanical fan was driven
> off
> > the water pump on my 5.0, and in heavy track use, that tends to
> kill
> > water pump bearings because of all the weight hanging out there.
> > that's not an issue with our cars, so i would be inclined to keep
> > the current mechanical fan setup unless you're having trouble
> finding
> > a replacement viscous clutch.
> >
> > if you do decide to install an electric fan, make sure you use an
> OEM
> > fan.  i would not trust the aftermarket electric fans.  they aren't
> > built to last.  the construction is cheaper - thinner wires, low
> quality
> > bearings.  i'd rather go to the junkyard and look for a fan from a
> > FWD car with a V6 or V8.  they tend to be very crowded in the
> engine
> > compartment, requiring a thinner fan with more power to keep them
> cool.
> >
> > -teddy
> >
> > --- Mark Strangways <StrangConst at rogers.com> wrote:
> >
> >> Not really a free ride. It does steal HP
> >> Maybe like you said an electric clutch that would dump it under
> high rpm 
> >> /
> >> high load usage.
> >> After all who needs a fan at 150 MPH
> >>
> >> Mark
> >> ----- Original Message ----- 
> >> From: <djdawson2 at aol.com>
> >> To: <StrangConst at rogers.com>; <josh at spiny.com>;
> <S-CAR-List at audifans.com>
> >> Sent: Friday, May 11, 2007 7:24 PM
> >> Subject: Re: [s-cars] Viscous fan clutch failure?
> >>
> >>
> >> >I don't think there's anything "wrong" with electric fans... it's
> just 
> >> >that
> >> >they tend to use rather high current motors.  That mean relays
> and
> >> >switches... and increased alternator load.  An engine driven fan
> is
> >> >essentially a "free ride" so it makes more sense to me... when
> it's an
> >> >option.  Some engine compartments just don't have the space.
> >> >
> >> > Dave
> >> >
> >> >
> >> > -----Original Message-----
> >> > From: StrangConst at rogers.com
> >> > To: josh at spiny.com; S-CAR-List at audifans.com; djdawson2 at aol.com
> >> > Sent: Fri, 11 May 2007 5:21 PM
> >> > Subject: Re: [s-cars] Viscous fan clutch failure?
> >> >
> >> >
> >> > What's wrong with electric fans.
> >> > I guess other than the weight of the motor.
> >> >
> >> > I just saw Audi Canada's wrecked (at Mosport) 2007 S8 V10 (5.2
> l) it 
> >> > has
> >> > one electric fan left...
> >> > Gonna see how it will fit.
> >> > Anyone want an S8 interior, or motor ? What is left of the car
> is all 
> >> > for
> >> > sale
> >> >
> >> > Mark
> >> > ----- Original Message ----- 
> >> > From: djdawson2 at aol.com
> >> > To: josh at spiny.com ; StrangConst at rogers.com ;
> S-CAR-List at audifans.com
> >> > Sent: Friday, May 11, 2007 7:06 PM
> >> > Subject: Re: [s-cars] Viscous fan clutch failure?
> >> >
> >> >
> >> > Still yet, the best solution is the fan clutch that is activated
> much 
> >> > like
> >> > the A/C clutch.  No engagement at all when not required, and
> then full
> >> > engagement when needed.
> >> >
> >> > Haven't seen that on cars yet.
> >> >
> >> >
> >> > -----Original Message-----
> >> > From: josh at spiny.com
> >> > To: StrangConst at rogers.com; S-CAR-List at audifans.com
> >> > Sent: Fri, 11 May 2007 4:33 PM
> >> > Subject: Re: [s-cars] Viscous fan clutch failure?
> >> >
> >> >
> >> > Mark, that might be true on old cars without modern fan
> clutches, but
> >> > the clutch is there to keep the fan from robbing too much power,
> and
> >> > also to keep the noise down.  The idea is that the hotter the
> air
> >> > gets around the fan, the more air it moves.  Plus, a viscous
> clutched
> >> > fan is able to move much more air than an electric fan, and more
> >> > reliably too. They're not without their problems, but they do
> have
> >> > some important advantages over electric fans.
> >> >
> >> > On May 11, 2007, at 8:36 AM, Mark Strangways wrote:
> >> >
> >> >> Yank that sucka outta there and put in an electric.
> >> >> Good for about 30-50 HP... Dyno proven
> >> >>
> >> >> Mark
> >> >> ----- Original Message -----
> >> >> From: "Peter Golledge" <petergolledge at gmail.com>
> >> >> To: <s-car-list at audifans.com>
> >> >> Sent: Friday, May 11, 2007 9:05 AM
> >> >> Subject: [s-cars] Viscous fan clutch failure?
> >> >>
> >> >>
> >> >>> Folk,
> >> >>>
> >> >>> My wife reported some unusual noise from her 95 S6 and no A/C.
>  I
> >> >>> check
> >> >>> out
> >> >>> the car last night... everything seems fine.  Get it up to
> >> >>> operating temp
> >> >>> with a drive, still no problems.  Looking at the primary fan I
> see it
> >> >>> turning maybe 60 rpm with the engine idling.  Stops with the
> touch
> >> >>> of bit
> >> >>> of
> >> >>> plastic scrap.  No huge play in the clutch but I suspect its
> >> >>> dead.    Any
> >> >>> BTDT on the list?
> >> >>>
> >> >>> With the fan blades off I can easily get a big 32" spanner on
> the
> >> >>> clutch.
> >> >>> Anyone removed it by holding the pulley with rubber filter
> strap or
> >> >>> similar?
> >> >>>
> >> >>> Regards
> >> >>> -- 
> >> >>> Peter Golledge
> >> >>>
> >> >>> 95 S6, 89 200TQA, 87 LT-1Q, 1979 930
> >> >>> _______________________________________________
> >> >>> S-CAR-List mailing list
> >> >>> S-CAR-List at audifans.com
> >> >>> http://www.audifans.com/mailman/listinfo/s-car-list
> >> >>>
> >> >>
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> >> >
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> >> >
> >> >
> >> >
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> >>
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> >
>
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