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DigiPanel Question [message #369475] Thu, 14 April 2022 13:04 Go to next message
SteveW is currently offline  SteveW   United States
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Registered: June 2005
Location: Southern California - Ora...
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Senior Member
Greetings from Southern California !!

Might any of you fine folks know the details of the "high-speed solid-state engine-temperature sensors" used on our DigiPanels ??

I'm contemplating the installation of a proper temperature sensor port on my transmission pan (and probably a drain plug) and would like to install a typical sensor rather than the "on a bolt" sensor that the DigiPanel currently uses.

And - considering the same strategy for water temperature too.

Thank you for all of the expertise shared here.

Steve W
1973 23 Yellow





Steve W 1973 : 23' Southern California
Re: DigiPanel Question [message #369476 is a reply to message #369475] Thu, 14 April 2022 13:54 Go to previous messageGo to next message
Tom Katzenberger is currently offline  Tom Katzenberger   United States
Messages: 399
Registered: June 2019
Location: Kingsville, MD
Karma: 4
Senior Member
Steve.

I believe Summit Racing sells all the weld on Bung plugs you need. I installed one on my oil pan, trans pan and final drive cover. All worked out well.

There are also after markket plugs which I am sure will do just as good.

Good Luck and take care,
Tom K.


Tom & Oki Katzenberger, Kingsville, Maryland, 1977 23' Birchaven, 455 C.I.D., Micro Level, Howell EBL-EFI Spark Control, Macerator, York Air Compressor, 6 Wheel Disc, Quadra Bag, Onan W/Bovee Ignition
Re: DigiPanel Question [message #369477 is a reply to message #369475] Thu, 14 April 2022 14:47 Go to previous messageGo to next message
lqqkatjon is currently offline  lqqkatjon   United States
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Registered: October 2010
Location: St. Cloud, MN
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I am not familiar with the digipanel, other then it does have bolt on sensors.....


weld on bungs for the tranny pan are easily bought from napa, summit, or amazon.... and I recommend that for 2 reasons. 1. tranny temp sensor. 2. works as a drain plug as well!



Jon Roche 75 palm beach EBL EFI, manny headers, Micro Level, rebuilt most of coach now. St. Cloud, MN http://lqqkatjon.blogspot.com/
Re: DigiPanel Question [message #369481 is a reply to message #369475] Thu, 14 April 2022 17:14 Go to previous messageGo to next message
Christo is currently offline  Christo   United States
Messages: 108
Registered: April 2019
Location: Weymouth, MA
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Senior Member
Applied GMC now sells the DigiPanel. They can refer you to a technical guy who may be able to assist with your question about the senders. As far as the trans temp, consider getting a finned aluminum pan from ragusarv.com -- they have a fitting built in along with a drain plug. The Ragusa pan is reported to help with cooling although some folks don't like it because it protrudes a bit lower than stock, increasing the risk of impact damage.

Christo Darsch
GMC Nor'easters
1977 Eleganza II - "The Komet"
3.50 Power Drive, Disc Brakes, Alcoas
Weymouth, MA
[GMCnet] Re: DigiPanel Question [message #369482 is a reply to message #369481] Thu, 14 April 2022 17:58 Go to previous messageGo to next message
James Hupy is currently offline  James Hupy   United States
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Registered: May 2010
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Senior Member
I have a Ragusa finned aluminum transmission pan, and it has a drain plug
as well as a plug for a temp sending unit, which I also use. Transmission
temp rarely moves the needle. That finned pan works very well and it has an
extra quart capacity. A good investment as far as I can tell.
I also removed the final drive pan and welded in a bung for a temp.
sensor. That one makes me nervous. Final drive temps exceed 300 ° Farenheit
on heavy uphill climbs. Before I had the temp sensor, I rarely even thought
about final drive temps. I use a synthetic final drive lube as well as ATF.
CHEAP INSURANCE.
Jim Hupy
Salem, Oregon

On Thu, Apr 14, 2022, 3:17 PM Christo Darsch wrote:

> Applied GMC now sells the DigiPanel. They can refer you to a technical guy
> who may be able to assist with your question about the senders. As far as
> the trans temp, consider getting a finned aluminum pan from ragusarv.com
> -- they have a fitting built in along with a drain plug. The Ragusa pan is
> reported to help with cooling although some folks don't like it because it
> protrudes a bit lower than stock, increasing the risk of impact damage.
> --
> Christo Darsch
> GMC Nor'easters
> 1977 Eleganza II - "The Komet"
> 3.50 Power Drive, Disc Brakes, Alcoas
> Weymouth, MA
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
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GMCnet mailing list
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Re: DigiPanel Question [message #369484 is a reply to message #369475] Thu, 14 April 2022 21:18 Go to previous messageGo to next message
RF_Burns is currently offline  RF_Burns   Canada
Messages: 2276
Registered: June 2008
Location: S. Ontario, Canada
Karma: 3
Senior Member
Steve,
I think you are asking about the actual DigiPanel temperature sensor parameters. If I recall the DigiPanel does not use a standard sensor setup such as the 0-90 ohm GM sensor, but rather uses the temperature vs current gradient of a common transistor E-B junction. It doesn't use a temp sensor chip such as a LM34.

I looked at one of mine but the markings had been ground off. Try a 2N3904 emitter-base junction and compare it to an OEM DigiPanel sensor and see how close it is.

Just my 2 cents


Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
[GMCnet] Re: DigiPanel Question [message #369487 is a reply to message #369482] Thu, 14 April 2022 21:11 Go to previous messageGo to next message
David Herbert is currently offline  David Herbert   United States
Messages: 3
Registered: April 2022
Karma: 0
Junior Member
Which ATF do you recommend?

On Thu, Apr 14, 2022 at 5:59 PM James Hupy wrote:

> I have a Ragusa finned aluminum transmission pan, and it has a drain plug
> as well as a plug for a temp sending unit, which I also use. Transmission
> temp rarely moves the needle. That finned pan works very well and it has an
> extra quart capacity. A good investment as far as I can tell.
> I also removed the final drive pan and welded in a bung for a temp.
> sensor. That one makes me nervous. Final drive temps exceed 300 ° Farenheit
> on heavy uphill climbs. Before I had the temp sensor, I rarely even thought
> about final drive temps. I use a synthetic final drive lube as well as ATF.
> CHEAP INSURANCE.
> Jim Hupy
> Salem, Oregon
>
> On Thu, Apr 14, 2022, 3:17 PM Christo Darsch wrote:
>
>> Applied GMC now sells the DigiPanel. They can refer you to a technical
> guy
>> who may be able to assist with your question about the senders. As far as
>> the trans temp, consider getting a finned aluminum pan from ragusarv.com
>> -- they have a fitting built in along with a drain plug. The Ragusa pan
> is
>> reported to help with cooling although some folks don't like it because
> it
>> protrudes a bit lower than stock, increasing the risk of impact damage.
>> --
>> Christo Darsch
>> GMC Nor'easters
>> 1977 Eleganza II - "The Komet"
>> 3.50 Power Drive, Disc Brakes, Alcoas
>> Weymouth, MA
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
--
*David Herbert*
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[GMCnet] Re: DigiPanel Question [message #369488 is a reply to message #369484] Thu, 14 April 2022 21:27 Go to previous message
James Hupy is currently offline  James Hupy   United States
Messages: 6806
Registered: May 2010
Karma: -62
Senior Member
I use Valvoline Synthetic. It was what Manny recommended in my
remanufactured transmission. I suspect that other brand names would work as
well. But, that is the name brand that I have always used. Brand loyalty
and all that, I guess.
Jim Hupy
Salem, Oregon

On Thu, Apr 14, 2022, 7:18 PM Bruce Hislop wrote:

> Steve,
> I think you are asking about the actual DigiPanel temperature sensor
> parameters. If I recall the DigiPanel does not use a standard sensor setup
> such
> as the 0-90 ohm GM sensor, but rather uses the temperature vs current
> gradient of a common transistor E-B junction. It doesn't use a temp sensor
> chip
> such as a LM34.
>
> I looked at one of mine but the markings had been ground off. Try a
> 2N3904 emitter-base junction and compare it to an OEM DigiPanel sensor and
> see
> how close it is.
>
> Just my 2 cents
>
> --
> Bruce Hislop
> ON Canada
> 77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.1 ton front end
> http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
> My Staff says I never listen to them, or something like that
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:

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