[DeTomaso] fan question
Will Kooiman
will.kooiman at gmail.com
Tue May 23 16:54:30 EDT 2023
More data points:
My Pantera is a 400, Dart block, A3 heads, and a large hydraulic roller. It has a Fidanza radiator and dual SPAL fans. No vents in the hood. The fans come on when I’m idling, but once I’m going 30mph or so, they turn off.
When I had a 351C with A3 heads in Houston, my fans were broken and I didn’t know it. I had driven for years with no fans. It took an hour of stop/go traffic in a 100 degree heat wave for it to overheat.
My Cobra is a 482 FE with a large hydraulic roller. It has an aluminum radiator, and 3 fans. It only needs the sucker fan. The 2 pushers are for looks. They only come on when I’ve been idling, and go off at 30mph or so.
My Viper is a 488 with a blower. Fans only come on when going under 30mph.
When I tracked the Viper last, it ran hot. I was pushing it pretty hard, though.
From: Christopher Kimball <ChrisVKimball at msn.com>
Date: Tuesday, May 23, 2023 at 12:24 PM
To: Charles McCall <charlesmccall at gmail.com>
Cc: "will.kooiman at gmail.com" <will.kooiman at gmail.com>, Mike Drew <mikeldrew at aol.com>, Scott Couchman <scottcouchman at yahoo.com>, Pantera Owners Club of America <detomaso at server.detomasolist.com>, Forest Goodhart <forestg at att.net>
Subject: RE: [DeTomaso] fan question
👍
Sent via the Samsung Galaxy S9+, an AT&T 5G Evolution capable smartphone
-------- Original message --------
From: Charles McCall <charlesmccall at gmail.com>
Date: 5/23/23 8:54 AM (GMT-08:00)
To: Christopher Kimball <chrisvkimball at msn.com>
Cc: Will Kooiman <will.kooiman at gmail.com>, Mike Drew <mikeldrew at aol.com>, Scott Couchman <scottcouchman at yahoo.com>, Pantera Owners Club of America <detomaso at server.detomasolist.com>, Forest Goodhart <forestg at att.net>
Subject: Re: [DeTomaso] fan question
I had a pretty modified 351 and now have a 408 as well... no overheating in traffic with 2 fans operated by a thermostat, and the car is in Spain. Just one more data point...
On Tue, May 23, 2023 at 8:33 PM Christopher Kimball <chrisvkimball at msn.com> wrote:
I wonder if the fact my engine is a 408 with a different camshaft and
other upgrades has any effect on how hot it runs.
Sent via the Samsung Galaxy S9+, an AT&T 5G Evolution capable
smartphone
-------- Original message --------
From: Will Kooiman <will.kooiman at gmail.com>
Date: 5/23/23 5:58 AM (GMT-08:00)
To: Mike Drew <mikeldrew at aol.com>, Scott Couchman
<scottcouchman at yahoo.com>
Cc: Pantera Owners Club of America <detomaso at server.detomasolist.com>,
Forest Goodhart <forestg at att.net>
Subject: Re: [DeTomaso] fan question
Here's a weird one...
My fan relay melted, and I believe the problem was a dead spot in the
very old SPAL fans. I bought brand new fans and relays. All good now.
And, mine only come on when the engine is hot. I totally agree with
Mike. If you have to run your fans at 35mph+, you have other problems.
Btw - I'm in the Miami area - which gets pretty hot in the summer.
On 5/22/23, 9:03 PM, "DeTomaso on behalf of Mike Drew via DeTomaso"
<detomaso-bounces at server.detomasolist.com
<[1]mailto:detomaso-bounces at server.detomasolist.com> on behalf of
detomaso at server.detomasolist.com
<[2]mailto:detomaso at server.detomasolist.com>> wrote:
Scott,
Out of curiosity, do you also drive with your headlights on at all
times? :) :) :)
Mike
Sent from my iPad
> On May 22, 2023, at 17:36, Scott Couchman via DeTomaso
<detomaso at server.detomasolist.com
<[3]mailto:detomaso at server.detomasolist.com>> wrote:
>
> I made this change years ago. I live in Southern California where the
weather is usually warm. I had a relay fail once while driving and the
car started to overheat. I didn't see much benefit to not running the
fan constantly, so mine both come on with the ignition switch and my
engine runs cool.
>
>> On May 21, 2023, at 6:02 PM, Christopher Kimball
<ChrisVKimball at msn.com <[4]mailto:ChrisVKimball at msn.com>> wrote:
>>
>> Thanks, Forest. But I want to try and avoid cutting into the relay
>> wires or having to run a whole new set of wires or even one wire, to
>> the relay. Also, if I can do what I'm hoping by just adding 12v to
the
>> A/C input on the DD box, eventually I can buy another dakota digital
>> box that works and just replace the one that's there now, without
>> having to run new wires everywhere. Sincerely, Chris
>>
>> Sent via the Samsung Galaxy S9+, an AT&T 5G Evolution capable
>> smartphone
>>
>> -------- Original message --------
>>
>> From: Forest Goodhart <forestg at att.net <[5]mailto:forestg at att.net>>
>>
>> Date: 5/21/23 6:09 AM (GMT-08:00)
>>
>> To: Pantera Owners Club of America <detomaso at server.detomasolist.com
<[6]mailto:detomaso at server.detomasolist.com>>,
>> Christopher Kimball <chrisvkimball at msn.com
<[7]mailto:chrisvkimball at msn.com>>
>>
>> Subject: Re: [DeTomaso] fan question
>>
>> Chris,
>> Which digital fan control model do you have? If you just want this
fan
>> to run whenever the ignition is on you can just run the switched 12
>> volt wire directly to the fan relay and not even use the fan
>> controller. If you want something else to happen then let me know
and I
>> can help you out.
>> Forest
>> On Saturday, May 20, 2023 at 10:25:56 PM PDT, Christopher Kimball
>> <chrisvkimball at msn.com <[8]mailto:chrisvkimball at msn.com>> wrote:
>> Hi everyone,
>> Today Doug, Mike, and Brian from PNW came over and assisted me in
the
>> installation of my new thermostat, and when I say "assisted me" what
>> I
>> mean is they did all the work and I watched...:). I really
appreciate
>> their help. There was an interesting snag we hit when it turned out
>> the rear bolt holding the thermostat cover couldn't be removed
>> because
>> part of the Edelbrock flange extended too far over the bolt's head
to
>> enable the bolt to be extracted. We had to use a hacksaw to
>> literally
>> cut away some of the aluminum so we could remove the bolt to get the
>> cover off the thermostat. I took a number of pictures and will write
>> an article about it sometime soon for possible inclusion in one of
>> the
>> POCA publications, perhaps.
>> Thanks to all of you on the forum for all your assistance in getting
>> the correct components for the thermostat project, but here's
>> another,
>> weird "Pandora" twist: It turned out the gasket I got from
>> summit--the
>> expensive deluxe version--was the wrong gasket in the right
>> packaging!
>> The difference was subtle, but once we started installing the new
>> thermostat and gasket, I noticed one edge of the gasket sticking out
>> further than I thought it should. We removed it and compared it with
>> the gasket Mike brought (it was extremely fortunate he thought to
>> bring
>> it) and they were slightly different despite the fact the one Mike
>> brought was in identical packaging to the one I got from Summit!
>> Word
>> to the wise--don't believe everything you read on a package, and
>> always
>> double-check everything.
>> Here's my latest question: I discovered my Dakota Digital fan system
>> is not working correctly, although it sort of works. What I'd like
>> to
>> try is to see if I can get the unit to send out the correct signal
to
>> the fan relay to turn on the fan (this system is used only for a
>> third,
>> sucker fan I added years ago). What I'm considering doing is taking
>> a
>> 12v line which is ignition-switched, and running it to the "A/C
>> input"
>> on the Dakota Digital box. That input is designed to get a 12v
>> trigger
>> signal from the A/C unit which then turns on the fan whenever the
A/C
>> system is operating. By running 12v to this input when the ignition
>> is
>> turned on, I think I should be able to have the DD box send the
>> correct
>> signal to the fan relay since the box will read the 12v from the
>> switched wire and think it's 12v coming from the A/C system. This
>> way
>> whenever the car is switched on the third fan will run.
>> Do you think this will work, or is the 12v coming from the A/C (the
>> "A/C trigger") different than just a straight 12v coming from an
>> ignition-switched source?
>> Thanks again for all your help!
>> Sincerely,
>> Chris
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4. mailto:ChrisVKimball at msn.com
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6. mailto:detomaso at server.detomasolist.com
7. mailto:chrisvkimball at msn.com
8. mailto:chrisvkimball at msn.com
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-------------- next part --------------
More data points:
My Pantera is a 400, Dart block, A3 heads, and a large hydraulic
roller. It has a Fidanza radiator and dual SPAL fans. No vents in the
hood. The fans come on when I'm idling, but once I'm going 30mph or
so, they turn off.
When I had a 351C with A3 heads in Houston, my fans were broken and I
didn't know it. I had driven for years with no fans. It took an hour
of stop/go traffic in a 100 degree heat wave for it to overheat.
My Cobra is a 482 FE with a large hydraulic roller. It has an aluminum
radiator, and 3 fans. It only needs the sucker fan. The 2 pushers are
for looks. They only come on when I've been idling, and go off at
30mph or so.
My Viper is a 488 with a blower. Fans only come on when going under
30mph.
When I tracked the Viper last, it ran hot. I was pushing it pretty
hard, though.
From: Christopher Kimball <ChrisVKimball at msn.com>
Date: Tuesday, May 23, 2023 at 12:24 PM
To: Charles McCall <charlesmccall at gmail.com>
Cc: "will.kooiman at gmail.com" <will.kooiman at gmail.com>, Mike Drew
<mikeldrew at aol.com>, Scott Couchman <scottcouchman at yahoo.com>, Pantera
Owners Club of America <detomaso at server.detomasolist.com>, Forest
Goodhart <forestg at att.net>
Subject: RE: [DeTomaso] fan question
👍
Sent via the Samsung Galaxy S9+, an AT&T 5G Evolution capable
smartphone
-------- Original message --------
From: Charles McCall <charlesmccall at gmail.com>
Date: 5/23/23 8:54 AM (GMT-08:00)
To: Christopher Kimball <chrisvkimball at msn.com>
Cc: Will Kooiman <will.kooiman at gmail.com>, Mike Drew
<mikeldrew at aol.com>, Scott Couchman <scottcouchman at yahoo.com>, Pantera
Owners Club of America <detomaso at server.detomasolist.com>, Forest
Goodhart <forestg at att.net>
Subject: Re: [DeTomaso] fan question
I had a pretty modified 351 and now have a 408 as well... no
overheating in traffic with 2 fans operated by a thermostat, and the
car is in Spain. Just one more data point...
On Tue, May 23, 2023 at 8:33PM Christopher Kimball
<[1]chrisvkimball at msn.com> wrote:
I wonder if the fact my engine is a 408 with a different camshaft
and
other upgrades has any effect on how hot it runs.
Sent via the Samsung Galaxy S9+, an AT&T 5G Evolution capable
smartphone
-------- Original message --------
From: Will Kooiman <[2]will.kooiman at gmail.com>
Date: 5/23/23 5:58 AM (GMT-08:00)
To: Mike Drew <[3]mikeldrew at aol.com>, Scott Couchman
<[4]scottcouchman at yahoo.com>
Cc: Pantera Owners Club of America
<[5]detomaso at server.detomasolist.com>,
Forest Goodhart <[6]forestg at att.net>
Subject: Re: [DeTomaso] fan question
Here's a weird one...
My fan relay melted, and I believe the problem was a dead spot in
the
very old SPAL fans. I bought brand new fans and relays. All
good now.
And, mine only come on when the engine is hot. I totally agree
with
Mike. If you have to run your fans at 35mph+, you have other
problems.
Btw - I'm in the Miami area - which gets pretty hot in the
summer.
On 5/22/23, 9:03 PM, "DeTomaso on behalf of Mike Drew via
DeTomaso"
<[7]detomaso-bounces at server.detomasolist.com
<[1]mailto:[8]detomaso-bounces at server.detomasolist.com> on behalf
of
[9]detomaso at server.detomasolist.com
<[2]mailto:[10]detomaso at server.detomasolist.com>> wrote:
Scott,
Out of curiosity, do you also drive with your headlights on at
all
times? :) :) :)
Mike
Sent from my iPad
> On May 22, 2023, at 17:36, Scott Couchman via DeTomaso
<[11]detomaso at server.detomasolist.com
<[3]mailto:[12]detomaso at server.detomasolist.com>> wrote:
>
> I made this change years ago. I live in Southern California
where the
weather is usually warm. I had a relay fail once while driving
and the
car started to overheat. I didn't see much benefit to not running
the
fan constantly, so mine both come on with the ignition switch and
my
engine runs cool.
>
>> On May 21, 2023, at 6:02 PM, Christopher Kimball
<[13]ChrisVKimball at msn.com <[4]mailto:[14]ChrisVKimball at msn.com>>
wrote:
>>
>> Thanks, Forest. But I want to try and avoid cutting into the
relay
>> wires or having to run a whole new set of wires or even one
wire, to
>> the relay. Also, if I can do what I'm hoping by just adding
12v to
the
>> A/C input on the DD box, eventually I can buy another dakota
digital
>> box that works and just replace the one that's there now,
without
>> having to run new wires everywhere. Sincerely, Chris
>>
>> Sent via the Samsung Galaxy S9+, an AT&T 5G Evolution capable
>> smartphone
>>
>> -------- Original message --------
>>
>> From: Forest Goodhart <[15]forestg at att.net
<[5]mailto:[16]forestg at att.net>>
>>
>> Date: 5/21/23 6:09 AM (GMT-08:00)
>>
>> To: Pantera Owners Club of America
<[17]detomaso at server.detomasolist.com
<[6]mailto:[18]detomaso at server.detomasolist.com>>,
>> Christopher Kimball <[19]chrisvkimball at msn.com
<[7]mailto:[20]chrisvkimball at msn.com>>
>>
>> Subject: Re: [DeTomaso] fan question
>>
>> Chris,
>> Which digital fan control model do you have? If you just want
this
fan
>> to run whenever the ignition is on you can just run the
switched 12
>> volt wire directly to the fan relay and not even use the fan
>> controller. If you want something else to happen then let me
know
and I
>> can help you out.
>> Forest
>> On Saturday, May 20, 2023 at 10:25:56 PM PDT, Christopher
Kimball
>> <[21]chrisvkimball at msn.com
<[8]mailto:[22]chrisvkimball at msn.com>> wrote:
>> Hi everyone,
>> Today Doug, Mike, and Brian from PNW came over and assisted me
in
the
>> installation of my new thermostat, and when I say "assisted
me" what
>> I
>> mean is they did all the work and I watched...:). I really
appreciate
>> their help. There was an interesting snag we hit when it
turned out
>> the rear bolt holding the thermostat cover couldn't be removed
>> because
>> part of the Edelbrock flange extended too far over the bolt's
head
to
>> enable the bolt to be extracted. We had to use a hacksaw to
>> literally
>> cut away some of the aluminum so we could remove the bolt to
get the
>> cover off the thermostat. I took a number of pictures and will
write
>> an article about it sometime soon for possible inclusion in
one of
>> the
>> POCA publications, perhaps.
>> Thanks to all of you on the forum for all your assistance in
getting
>> the correct components for the thermostat project, but here's
>> another,
>> weird "Pandora" twist: It turned out the gasket I got from
>> summit--the
>> expensive deluxe version--was the wrong gasket in the right
>> packaging!
>> The difference was subtle, but once we started installing the
new
>> thermostat and gasket, I noticed one edge of the gasket
sticking out
>> further than I thought it should. We removed it and compared
it with
>> the gasket Mike brought (it was extremely fortunate he thought
to
>> bring
>> it) and they were slightly different despite the fact the one
Mike
>> brought was in identical packaging to the one I got from
Summit!
>> Word
>> to the wise--don't believe everything you read on a package,
and
>> always
>> double-check everything.
>> Here's my latest question: I discovered my Dakota Digital fan
system
>> is not working correctly, although it sort of works. What I'd
like
>> to
>> try is to see if I can get the unit to send out the correct
signal
to
>> the fan relay to turn on the fan (this system is used only for
a
>> third,
>> sucker fan I added years ago). What I'm considering doing is
taking
>> a
>> 12v line which is ignition-switched, and running it to the
"A/C
>> input"
>> on the Dakota Digital box. That input is designed to get a 12v
>> trigger
>> signal from the A/C unit which then turns on the fan whenever
the
A/C
>> system is operating. By running 12v to this input when the
ignition
>> is
>> turned on, I think I should be able to have the DD box send
the
>> correct
>> signal to the fan relay since the box will read the 12v from
the
>> switched wire and think it's 12v coming from the A/C system.
This
>> way
>> whenever the car is switched on the third fan will run.
>> Do you think this will work, or is the 12v coming from the A/C
(the
>> "A/C trigger") different than just a straight 12v coming from
an
>> ignition-switched source?
>> Thanks again for all your help!
>> Sincerely,
>> Chris
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