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Subject: 2N thermostat

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Daniel    Posted 12-17-2020 at 12:35:59 [URL] [DELETE]        [Reply] [Email]  
  • 2N thermostat
  • I have a 1945 2N. I had it for a few years and NEVER use it in winter. I am installing a temperature gauge with a sensor addaptor in the top radiator hose (my winter project) and just realized that it does Not have a thermostat in the top radiator hose.
    Question: Do I need a thermostat if it is only used in the warm weather to cut grass? Any advantages or disadvantages having one in for summer use? If so where does it go in relation to my heat-gauge sensor-pipe?

    Tim Daley(MI)    Posted 12-18-2020 at 06:10:23 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 2N thermostat
  • Dan-
    Always use a Thermostat as emphasized. Get an upper hose from Just8Ns or Dennis Carpenter as it has the band to hold the Thermostat in place. Unit installed with pointed end towards radiator. If the water pump fails it is almost always because the bearing is shot and won't spin the pulley which then won't spin the fan belt which won't allow the generator to charge and thus may cause the belt to break or shred apart. The N's only had a temp sensor on the NAN versions -see MPC dash panel - and at one time they were going to add one on the 8N but decided against putting it into production, mainly because they were already working on a new model, the NAA, which would incorporate a temp gauge. Yet another reason to keep a belt tensioner on your generator and inspecting tension should be part of your routine checklist before starting up each time.



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    Daniel    Posted 12-18-2020 at 11:14:40 [URL] [DELETE]        [Reply] [Email]  
  • Re: 2N thermostat
  • Thanks Tim for all the information. Your message and the attached articles answers all my questions.

    Bruce(VA)    Posted 12-17-2020 at 16:23:22 [URL] [DELETE]        [Reply] [Email]  
  • Re: 2N thermostat
  • Yes, you need a t-stat.

    See tip # 25.

    I'd say you have a greater need for a t-stat than a temp gauge, IMO.

    Put the t-stat before the gauge.

    And if you want an accurate reading, put the sensor in the head.

    John in Mich    Posted 12-17-2020 at 16:23:09 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 2N thermostat
  • An engine at a controlled operating temperature is more efficient. The thermostat provides that as long as the water pump and radiator are in good working condition.
    You sensor adaptor should be on the engine side of the thermostat. If you were to experience a stuck thermostat, the overheat should show up right away.

    Daniel    Posted 12-17-2020 at 17:05:01 [URL] [DELETE]        [Reply] [Email]  
  • Re: 2N thermostat
  • My radiator was rebuilt so I know that is working ok. You mentioned the water pump not working. Like I said I know my 2N gets hot after working it hard. I never thought about a water pump. Isn't the water pump either working or NOT working?? Can the water pump be partially functional? If so, how can it be tested? I have the radiator off and drained right now so is there any test I can do?

    Daniel    Posted 12-17-2020 at 16:57:19 [URL] [DELETE]        [Reply] [Email]  
  • Re: 2N thermostat
  • Thanks for the help. I am ordering a thermostat today as long as i have everyting apart. There is no spot to put the sensor in the head although that was my first option. I am adding a gauge because if I am out brush-cutting for a long time, I can tell it is getting hot and don't want to go too hard. A good excuse to stop for a cold one.

    Bruce(VA)    Posted 12-17-2020 at 17:35:39 [URL] [DELETE]        [Reply] [Email]  
  • Re: 2N thermostat
  • " There is no spot to put the sensor in the head"

    Yes there is.

    A flat boss on the left front. That's why it's there. For industrial engines. And dual fuel engines.

    Drill & tap it and insert the sending unit.

    John in Mich    Posted 12-17-2020 at 17:06:28 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 2N thermostat
  • I've been driving my '51 8N for 68 years. It does not have a temperature gauge. Even with a gauge you can overheat...dirty radiator! When mowing tall debris you have to keep the grill and radator clean. Stop more often for a brew. LOL

    G.W. in Tenn.    Posted 12-17-2020 at 21:46:37 [URL] [DELETE]        [Reply] [Email]  
  • Re: 2N thermostat
  • I have a 52 8N.I put a temp gauge on mine with the sensor in the radiator hose. I put the sensor closest to the head with the thermostat closer to the radiator. You can watch the temperature build up as the engine warms up and when the thermostat opens you can see the gauge drop slightly to the normal operating temperature. With the sensor that close to the head you get a pretty accurate reading. I used the gauge for a NAA with the yellow green and red bands. Works really good.

    Daniel    Posted 12-18-2020 at 10:37:41 [URL] [DELETE]        [Reply] [Email]  
  • Re: 2N thermostat
  • Thank all of you for your help. I have the same gauge...glad it works. Have great holidays. Back to my cold Wisconsin garage (actually have a heater in it).

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