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Subject: 52 8N radiator thermostat

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Scott McKinnon    Posted 06-09-2017 at 19:08:25 [URL] [DELETE]        [Reply] [Email]  
  • 52 8N radiator thermostat
  • I was told today by a tractor repair guy that he does not recommend using a thermostat in southeastern North Carolina climate on my 8N. Says he never puts one on a John Deere, his main customer base. The 8N didn't have one when I bought it two years ago, but I am getting the radiator reconditioned and planned to add a thermostat. Any recommendations or comments would be appreciated.

    Farmer Brown    Posted 06-09-2017 at 21:41:17 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 52 8N radiator thermostat
  • Getting the engine up to proper temperature reduces wear and sludge deposits from forming. Use a thermostat and make sure its installed correctly.

    36 coupe    Posted 06-10-2017 at 07:05:29 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 52 8N radiator thermostat
  • Friends and I powered a cordwood saw in DEC.It had alcohol in the radiator, no thermostat.The engine boiled over so we shut down.Talked with fellows who used Model A cordwood saws and a sawmill.They all said you need a thermostat.I put one in the top hose and we could saw all day with out over heating.This was over 60 years ago.I helped Joe Ribero saw with his A powered saw rig.He said you would boil over in the summer time without a thermostat.I dont know why it works but it does.

    Bruce(OR)    Posted 06-10-2017 at 09:32:35 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 52 8N radiator thermostat // Purpose
  • The purpose of a thermostat is to slow down the water flow in the cooling system allowing for heat absorption. Coolant then flows to the radiator and the air flow past the thinner tubes cools the liquid before returning to the engine. If the coolant flows too quickly, it will not have enough time to absorb the heat. It is also possible to achieve the same action with a restriction plate in lieu of a thermostat. Some thermostats come with a small hole drilled into the mounting flange and this aids in the release of air pockets behind the thermostat during the initial installation as well as improved cycling action during engine operation.

    36 coupe    Posted 06-14-2017 at 16:17:11 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 52 8N radiator thermostat // Purpose
  • Stock car drivers used washers to replace the thermostats Ford V8 flat heads.I can still hear the intake roar of dual 97s doing 85 mph in the quarter mile in the 36 coupe.87 was my best time but a new 55 olds beat my time by 1 second.

    36 coupe    Posted 06-10-2017 at 16:42:49 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 52 8N radiator thermostat // Purpose
  • I got banned from an antique Ford car forum for posting the thermostat info.

    Bruce (VA)    Posted 06-09-2017 at 19:39:17 [URL] [DELETE]        [Reply] [Email]  
  • Re: 52 8N radiator thermostat
  • " he does not recommend using a thermostat in southeastern North Carolina climate on my 8N. "

    That's ridiculous.

    The climate has nothing to do with the need for a t-stat. The t-stat regulates the temperature of the engine. It allows the engine to quickly get to optimum operating temp & then keeps it there.

    As tight as he was, Henry started putting t-stats in cars in 1933.

    For more info on why a t-stat is important for your tractor's health, see tip # 25 at the link.

    If you want to use a 180* t-stat (which I use on all 4 of my 8N's) try A&I part # A-11C15, Gates 33108, Beck/Arnley part # 143-0024, Auto Zone part #
    3518 or NAPA part number THM 184 for 180* in hose t-stats.

    The car parts store folks are helpless w/o vehicle make/model/year info.
    Some can/will actually search on the number & cross reference, but more often than not, you will just get a dumb look. HINT: find a clerk near the age of your tractor..... ;) Try telling them that the t-stat is for your
    1977 Renault R12 1.6L L4.

    All of my 180* t-stats are A&I A-11C15's or AZ-3518's. They are a very tight fit in an N hose, but they will fit. I've never used the Gates, Beck/Arnley or NAPA t-stats so I can't help you w/ anything there but the part numbers.

    All that being said.....if you do not consistently run the tractor to operating temp, you will get condensation & sludge as a result.




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