Rick,
Don't forget the thermostat only controls the temperature in the engine.
The efficiency of the radiator will control the temperature in the discharge
tank where the tranny cooler is located. Before I lost my tranny pan temp
sender, my pan temps were in the 130 degree range. That's a Cad 500
with an aluminum radiator pulling a 4-door tracker here in the flatlands.
No one, including me, has bothered to check the discharge temp of the
aluminum radiator to know how good it really is. But I like it, yes I do.
Gary Kosier
77PB w/500Cad
Newark, Ohio
--------------------------------------------------
From: "Richard Denney"
Sent: Wednesday, July 05, 2017 3:13 PM
To:
Subject: Re: [GMCnet] What do those in the hot SW do for engine thermstats?
> Yabbut, that radiator is also cooling the transmission. I'm not sure
> there's much of an efficiency difference in the engine between 180 and
> 195,
> but if the 180 keeps the tranny 15 degrees cooler also, then that's okay
> with me.
>
> Rick "stirring the pot" Denney
>
> On Wed, Jul 5, 2017 at 1:38 PM, Ken Henderson
>
>> Bob,
>>
>> You're going to get all kinds of opinions on thermostat temperatures,
>> from
>> none, to fixed orifice, to 165*F on up to the RECOMMENDED 195*F.
>> Remember
>> that higher operating temperatures, regardless of what you may hear, =
>> higher efficiency. Later model vehicles run even higher for that reason.
>>
>> I do, and will, stick with GMC's 195*F. And my Cad 500, with aluminum
>> radiator, runs at 193*F to 197*F under almost all circumstances,
>> coast-to-coast, towing or not, mountains or not, hot or cold ambient.
>>
>> JWID,
>>
>> Ken H.
>>
>>
>> On Wed, Jul 5, 2017 at 1:26 PM, Bob Dunahugh
>>
>> > My new Digi Panel in our latest 78 Royale is showing higher temps
>> > then
>> I
>> > was running in our former 78 Royale. Now on this trip. The temps have
>> come
>> > up a little more. I think this latest increase is a thermostat issue.
>> The
>> > 403 now has about 6000 miles on it. The thermostat is a 195. I'm
>> thinking
>> > of dropping that temp. We don't leave when it's real cold. Our GMC
>> > sets
>> in
>> > it's garage that's at 70 degrees all year long. If we leave on a
>> > cooler
>> > day. The engine isn't needing to come up from -35 below. So does 180
>> > seem
>> > right for my situation? I'm also thinking that during the rebuild
>> > that
>> > the PO had done. The builder put a car water pump in. Think the water
>> > pump is coming up. Bob Dunahugh
>> >
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
>
>
>
> --
> '73 X-Glacier 230 "Jaws"
> Northern Virginia
> Offlist email: rick at rickdenney dot com
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
Don't forget the thermostat only controls the temperature in the engine.
The efficiency of the radiator will control the temperature in the discharge
tank where the tranny cooler is located. Before I lost my tranny pan temp
sender, my pan temps were in the 130 degree range. That's a Cad 500
with an aluminum radiator pulling a 4-door tracker here in the flatlands.
No one, including me, has bothered to check the discharge temp of the
aluminum radiator to know how good it really is. But I like it, yes I do.
Gary Kosier
77PB w/500Cad
Newark, Ohio
--------------------------------------------------
From: "Richard Denney"
Sent: Wednesday, July 05, 2017 3:13 PM
To:
Subject: Re: [GMCnet] What do those in the hot SW do for engine thermstats?
> Yabbut, that radiator is also cooling the transmission. I'm not sure
> there's much of an efficiency difference in the engine between 180 and
> 195,
> but if the 180 keeps the tranny 15 degrees cooler also, then that's okay
> with me.
>
> Rick "stirring the pot" Denney
>
> On Wed, Jul 5, 2017 at 1:38 PM, Ken Henderson
>
>> Bob,
>>
>> You're going to get all kinds of opinions on thermostat temperatures,
>> from
>> none, to fixed orifice, to 165*F on up to the RECOMMENDED 195*F.
>> Remember
>> that higher operating temperatures, regardless of what you may hear, =
>> higher efficiency. Later model vehicles run even higher for that reason.
>>
>> I do, and will, stick with GMC's 195*F. And my Cad 500, with aluminum
>> radiator, runs at 193*F to 197*F under almost all circumstances,
>> coast-to-coast, towing or not, mountains or not, hot or cold ambient.
>>
>> JWID,
>>
>> Ken H.
>>
>>
>> On Wed, Jul 5, 2017 at 1:26 PM, Bob Dunahugh
>>
>> > My new Digi Panel in our latest 78 Royale is showing higher temps
>> > then
>> I
>> > was running in our former 78 Royale. Now on this trip. The temps have
>> come
>> > up a little more. I think this latest increase is a thermostat issue.
>> The
>> > 403 now has about 6000 miles on it. The thermostat is a 195. I'm
>> thinking
>> > of dropping that temp. We don't leave when it's real cold. Our GMC
>> > sets
>> in
>> > it's garage that's at 70 degrees all year long. If we leave on a
>> > cooler
>> > day. The engine isn't needing to come up from -35 below. So does 180
>> > seem
>> > right for my situation? I'm also thinking that during the rebuild
>> > that
>> > the PO had done. The builder put a car water pump in. Think the water
>> > pump is coming up. Bob Dunahugh
>> >
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
>
>
>
> --
> '73 X-Glacier 230 "Jaws"
> Northern Virginia
> Offlist email: rick at rickdenney dot com
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
