Boyce Issue

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Model T Ford Forum: Forum 2014: Boyce Issue
Top of pagePrevious messageNext messageBottom of page Link to this message  By Ron on Monday, September 15, 2014 - 07:47 pm:

Just swapped the coolant in my radiator from water to antifreeze (always check the fit of the hoses with water - less mess). When running straight water, the Boyce always showed it running relatively cool - never climbed more than halfway up the gauge and NEVER went into the small circle at the SUMMER AVERAGE line. This afternoon, after putting in a 70/30 antifreeze mix, the temperature climbed into the bottom area of the small circle at the SUMMER AVERAGE line on the Boyce. Nothing else was changed on the vehicle. What am I missing?


Top of pagePrevious messageNext messageBottom of page Link to this message  By Ken Kopsky, Lytle TX on Monday, September 15, 2014 - 07:59 pm:

That's normal. Pure water has better thermal transfer properties. What ever you add to it lowers its ability to pick up and shed heat so the engine will run a little hotter. A good radiator is essential.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Mark Strange on Monday, September 15, 2014 - 08:05 pm:

Nothing - pure water is a more efficient coolant than a water/antifreeze mix (see link below), but of course with pure water you don't have protection from freezing or the higher boiling point that antifreeze provides. Also, antifreeze has corrosion inhibitors.

http://rehermorrison.com/tech-talk-55-keeping-cool/

Take a hard look at the temperature extremes that your car might be exposed to in Massachusetts, and use enough (but no more) antifreeze than necessary to safely cover those conditions.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Ron on Monday, September 15, 2014 - 08:15 pm:

OK - brand new Berg's radiator, so that's not an issue. Usually run 50/50 for the vehicles in the garage, but this one will sit in a three-sided horse shed this winter, so I went with the 70/30. Aside from running high on the motometer, am I risking anything by going with a 70/30?


Top of pagePrevious messageNext messageBottom of page Link to this message  By Mark Strange on Monday, September 15, 2014 - 08:16 pm:

Not that I know of, should be fine.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Ron on Monday, September 15, 2014 - 08:18 pm:

Thanks Mark


Top of pagePrevious messageNext messageBottom of page Link to this message  By Jim Rutherford on Tuesday, September 16, 2014 - 10:03 am:

Since its not directly said, I'll ask. When you say 70/30, I assume you are saying 70% antifreeze? As said above, glycol is not a very good coolant so keeping that to a minimum is best for cooling. 50/50 will not freeze until -26 F but maybe that's inadequate where you live?


Top of pagePrevious messageNext messageBottom of page Link to this message  By Erik Johnson on Tuesday, September 16, 2014 - 12:10 pm:

70/30 is good to minus 84F. That's overkill for Massachusetts. The fact that the car will be sitting in an open shed all winter is irrelevant.

50/50 is good to minus 34F and should suffice in MA. I live in Minneapolis and that is all we need around here. Even if I lived in International Falls, I would only need a 60/40 mixture.

Never put more than 70% antifreeze - once you go past that point the freezing point spikes back up.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Ricks - Surf City on Tuesday, September 16, 2014 - 01:51 pm:

You'll get better gas mileage running hotter, and the plugs won't foul. I think most Ts run too cool.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Ron on Tuesday, September 16, 2014 - 03:04 pm:

Yes - was saying 70% antifreeze. Will most likely go back to the 50/50 mixture.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Jerry VanOoteghem on Tuesday, September 16, 2014 - 04:29 pm:

I always use 50/50, but I also drain the cars in the winter. That's the only 100% way to prevent not only freezing but also a leaking headgasket drooling into the engine for 4 months.


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