[AJD] Running temperature

[Bill Salisbury]

HI Bob,

Thanks for your message.  You are right about the sludge concern, but the 
sludge will probably not be a concern at 145 degrees.  Many marine engines 
that are salt water cooled run at about 140 degrees and don't have the 
sludge problem.  It is also true that engines generally run better and 
cleaner when they run hotter, but remain out of the boiling range.

Thanks again for your response.

Bill Salisbury
----- Original Message ----- 
From: "Robert L. Holtzer" <rholtzer at earthlink.net>
To: "Antique John Deere mailing list" 
<antique-johndeere at lists.antique-tractor.com>
Sent: Monday, June 02, 2008 10:50 AM
Subject: Re: [AJD] Running temperature


> Somewhere I got the idea that running at lower temperature will
> result in sludge buildup in the engine.  Anyone have information on this?
>
> Bob Holtzer
>
>
> At 05:33 AM 6/2/2008, you wrote:
>>HI CEE VILL,
>>
>>Thanks for your information.  I do appreciate your effort.  I still have 
>>the
>>old thermostat and although it seemed to produce the same running temp, I
>>will check it on the stove to see when it opens.
>>
>>Regards,  Bill
>>----- Original Message -----
>>From: "CEE VILL" <cvee60 at hotmail.com>
>>To: "Antique John Deere mailing list"
>><antique-johndeere at lists.antique-tractor.com>
>>Sent: Sunday, June 01, 2008 9:27 PM
>>Subject: Re: [AJD] Running temperature
>>
>>
>>
>>The only time that would seem like a problem to me, Bill, is if I wanted
>>heat from a heater core in winter, or if I was going to run kerosene.  It
>>seems your cooling system is doing a good job.  If you work it hard on a 
>>90
>>degree day and it runs 20 degrees warmer, you are still in good shape.  I
>>suspect the new thermostat starts to open lower than it is marked.  I have
>>had to try three of them in years past to get one that would give me good
>>heat in winter on some trucks and cars.  I have cooked them on the stove
>>with a candy thermometer in the water to see where they really open.
>>
>>Charlie V.
>>
>> > From: salisburyw at comcast.net
>> > To: antique-johndeere at lists.antique-tractor.com
>> > Date: Sun, 1 Jun 2008 20:41:22 -0400
>> > Subject: [AJD] Running temperature
>> >
>> > HI JD owners,
>> >
>> > Can you tell me if it is generally normal for a JD 420 cooling system 
>> > to
>> > run on the cold side even when working hard?
>> >
>> > My 420 has a new temp gage and a new 160 degree thermostat.  About the
>> > highest reading that I ever see is 145 degrees when running.  After
>> > shutdown, the temp indicator will rise to about 170 briefly and then 
>> > begin
>> > to drop as the engine and cooling system cools.  Even on a hot day 
>> > about
>> > the highest reading I ever see is 145.  I have been intending to use an
>> > infra red heat gun on various parts of the cooling system and radiator
>> > hoses to see if the temp gage readings are accurate, but have not done
>> > that yet.  I was intending to do that this weekend, but forgot to take 
>> > the
>> > heat gun with me.  I live 120 miles away from the tractor.
>> >
>> > I welcome your comments.
>> >
>> > Bill Salisbury living in Virginia
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>>
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