[DeTomaso] Techno question: where is this gremlin located?
John Taphorn
jtaphorn at kingwoodcable.com
Sat Aug 14 16:00:44 EDT 2010
Steve
IMHO, Nothing wrong with 200. People get paranoid about temps in a Pantera due to its reputation for overheating. I believe that many Pantera owners operate their engine's too cool. We boast of our engines running at 185 on the highway; yet, that is less than ideal. 200 to 210 is a good temp range that allows oil to get closer to its ideal 225. Some argue that a fan coming on at 180 allows the cooling system to get on top of keeping temps lower - I really do not buy that.
Anyway, your temp sensor acts as a ground for your fan circuit when the radiator coolant hits 200 and allows the electrons to flow and fans to run. Actually, SO Bill has a tech report at Pantera Place that charts the accuracy, or better put inaccuracy, of Veglia temp gauges with various senders. I suspect that you actually have a 195 thermal switch and the inaccuracy of your gauge has you believing it is 200. If that be so, your engine coolant is actually cooler that you are informed by the temp gauge.
Id recommend that you run a 10 or 12 gauge wire, depending on the amps of your fans, from the thermal switch to a switch on your dash. The dash switch is subsequently grounded, in the closed position, using 12 or 10 gauge wire to the ground stud under the dash. It is better to utilize a central ground on the vehicle. If you use an existing switch on the center console, remove the daisy chained ground wire from that switch (if it be attached), as it is to light to carry the amps of the two fans, and use the heavier wire previously mentioned ground wire. 12G carries 41 amps and 10G carries 55amps. 12G should be adequate for many 2 fan loads. SPAL fans are higher amperage and you might consider 10G.
This will allow your thermal switch to still contribute to the cooling exercise, when you are distracted and not watching gauges while driving in the city, and allow you to override the thermal switch and turn the fans on at will.
Good luck
JT
----- Original Message -----
From: STEVEN BLUM
To: jtaphorn at kingwoodcable.com
Sent: Saturday, August 14, 2010 12:27 PM
Subject: RE: [DeTomaso] Techno question: where is this gremlin located?
John,
The fans are not going on to 200+. I would rather them go on at 180. Which is correct?
Steve
P.O. Box 81
Shoreham, N.Y. 11786
H (631) 744-6118
C (631) 235-1905
> From: jtaphorn at kingwoodcable.com
> To: steveblum2 at msn.com; dave at damardirect.com; detomasoregistry at gmail.com; dickruzzindesign at aol.com
> CC: detomaso at realbig.com
> Subject: Re: [DeTomaso] Techno question: where is this gremlin located?
> Date: Sat, 14 Aug 2010 08:29:45 -0500
>
> Steve, what exactly is the issue? Do you wish to be able to turn the fans
> on before the thermo switch would normally kick them on, or do you feel the
> thermo switch has the fan running when it is unnecessary?
>
> There are different wiring options of vary complexity depending on the
> change you desire.
>
> JT
>
> ----- Original Message -----
> From: "STEVEN BLUM" <steveblum2 at msn.com>
> To: <dave at damardirect.com>; <detomasoregistry at gmail.com>;
> <dickruzzindesign at aol.com>
> Cc: <detomaso at realbig.com>
> Sent: Friday, August 13, 2010 9:43 PM
> Subject: Re: [DeTomaso] Techno question: where is this gremlin located?
>
>
> >
> > I am considering rewiring the fans from the temp controlled relay to a
> > switch on the dash were I could turn them on or off based on the temp
> > gauge. What wiring changes do I have to make? Which relay should I
> > by-pass?
> >
> > Steve
> > P.O. Box 81
> > Shoreham, N.Y. 11786
> > H (631) 744-6118
> > C (631) 235-1905
> >
> >
> >
> >
> >> From: dave at damardirect.com
> >> To: detomasoregistry at gmail.com; dickruzzindesign at aol.com
> >> Date: Fri, 13 Aug 2010 13:17:31 -0400
> >> CC: detomaso at realbig.com
> >> Subject: Re: [DeTomaso] Techno question: where is this gremlin located?
> >>
> >> I have a couple of the diodes if anyone wants them, cheap. I bought them
> >> from Hall & then changed the wiring so I don't need them.
> >> IndyDave
> >>
> >> -----Original Message-----
> >> From: detomasoregistry at gmail.com [mailto:detomasoregistry at gmail.com]
> >> Sent: Thursday, August 12, 2010 12:50 PM
> >> To: 'dickruzzindesign'
> >> Cc: detomaso at realbig.com
> >> Subject: Re: [DeTomaso] Techno question: where is this gremlin located?
> >>
> >> Spinning fans act as generators. The solution is to install a diode (or
> >> two).
> >> Think of a diode as a one-way door, so install in the correct direction.
> >>
> >> Diodes are usually marked with a symbol kind-of like >| electricity flows
> >> only
> >> in the direction of the arrow. (to the right in my example)
> >>
> >> Chuck Melton
> >>
> >>
> >>
> >>
> >>
> >> Subject: Re: [DeTomaso] Techno question: where is this gremlin located?
> >>
> >> Another electrical question.
> >>
> >> My fans turn so fast on the freeway from airflow through the radiator,
> >> without power, that the little light that tells me when the fans are
> >> on glows at about 30% of full normal brightness (when the power is to
> >> the fans).
> >>
> >> What is happening?
> >> --
> >> All the best,
> >> DICK RUZZIN
> >> _____________________________________________________________________
> >> dickruzzinDESIGN at aol.com / Home: 313-824-0539 / Cell: 313-300-9558
> >> _______________________________________________
> >>
> >> Detomaso Forum Managed by POCA
> >>
> >> Archive Search Engine Now Available at http://www.realbig.com/detomaso/
> >>
> >> DeTomaso mailing list
> >> DeTomaso at list.realbig.com
> >> http://list.realbig.com/mailman/listinfo/detomaso
> >>
> >>
> >>
> >> _______________________________________________
> >>
> >> Detomaso Forum Managed by POCA
> >>
> >> Archive Search Engine Now Available at http://www.realbig.com/detomaso/
> >>
> >> DeTomaso mailing list
> >> DeTomaso at list.realbig.com
> >> http://list.realbig.com/mailman/listinfo/detomaso
> >
> > _______________________________________________
> >
> > Detomaso Forum Managed by POCA
> >
> > Archive Search Engine Now Available at http://www.realbig.com/detomaso/
> >
> > DeTomaso mailing list
> > DeTomaso at list.realbig.com
> > http://list.realbig.com/mailman/listinfo/detomaso
>
More information about the DeTomaso
mailing list