[AJD] Two cylinder 420

[Bill Salisbury]

HI Dean,

Thanks for your comment on the 160 thermostat.  My intention is to leave it 
alone and let it run the way it is.  It certainly runs well.

Regards,  Bill
----- Original Message ----- 
From: "Dean Van Peursem" <deanvp at att.net>
To: "'Antique John Deere mailing list'" 
<antique-johndeere at lists.antique-tractor.com>
Sent: Friday, July 18, 2008 1:26 AM
Subject: Re: [AJD] Two cylinder 420


> Bill,
>
> Apparently JD decided the 160 was best for this tractor when using gas. I 
> don't
> have experience with the vertical two cylinders but I much prefer higher 
> temps
> for the gas horizontal two cylinder tractors. But I sure wouldn't 
> recommend
> anything for a 420 other than what JD recommends. I'm sure for the "All 
> Fuel"
> tractors, the 180 degree thermostat improved complete combustion a bit.
> Typically "All Fuel" tractors were lower compression than gas and maybe a 
> gas
> engine with higher compression needed more thermal head room under heavy 
> load
> when combined with high ambient temperature.
>
>
> Dean Van Peursem
> Snohomish, WA
>
> If we take the time to count our blessings we don't have time to complain.
>
>
>
> -----Original Message-----
> From: antique-johndeere-bounces at lists.antique-tractor.com
> [mailto:antique-johndeere-bounces at lists.antique-tractor.com] On Behalf Of 
> Bill
> Salisbury
> Sent: Thursday, July 17, 2008 6:28 PM
> To: antique-johndeere at lists.antique-tractor.com
> Subject: [AJD] Two cylinder 420
>
> I have discovered that my JD 420 is running at 160 degrees which is what 
> the new
> thermostat is rated for.  My new water temp gage is out of calibration and 
> only
> shows 140 degrees at full operating temp.  I am not concerned about that. 
> My
> question is to you fellows with more experience than I, would it be better 
> to
> have a 180 degree thermostat in this engine?
>
> The parts manual calls for 160 for a gasoline engine, but calls for a 180 
> for an
> all fuel engine.  Seems like what would be good for the goose, would be 
> good for
> the gander too.  Any good reason not to run it at 180?
>
> No matter how hot the day or how heavy a load I am pulling with it, the 
> temp
> stays the same at 160.  In case you are wondering how I determined the 
> actual
> temp---it was by infra red heat gun.
>
> I welcome your comments.
>
> Bill Salisbury
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