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The cogged belts last longer because they run cooler...less internal flexing. But they also stretch more because there is less material holding them together.

You should use only the reqd percentage of anti freeze for the lowest likely ambient temp in your area for max cooling efficiency. There are charts/info available to give the reqd ratio.

If you are going to replace the rad, get an alum one. They are more efficient.

Replace t'stat first. Cheap & easy to to do... If the rad is old, it can clog with sediment in the tubes. Especially with a X flow rad because the tubes are horizontal & the lower tubes gradually block up so that the problem goes unnoticed until the engine is under more load....such as high...

As I said earlier in this thread, there can be a myriad of reasons for an engine that overheats. It is also an engine that is 50+ yrs old...... It should have shroud. Because Betsy didn't have a shroud does not mean that this engine will run just as cool without one. While the water pump has a...

The 'hole' in the stat must be the most misunderstood item related to engine cooling. Production engines have a bypass in the cooling system. On the BB, it is the 5/8" hole in the water pump body, directly under the stat. It has two functions: - should the stat jam in the closed position, it...

My experience. Stant stats are bang-on the rating. A 160 stat should open at 160 & take another 20-30 to fully opem. Robert Shaw, Milodon, Mr. Gasket hi-flow stats. All the same, different psackaging. The original US made stats were all brass. The Chinese versions which is all I see these days...

A book could be written [ maybe two! ] about cooling systems. I had a Dart that would overheat & boil if high rpms were used in 1st and 2nd gear. No problem if only 1st gear revved out. The problem [ took a long time to find it ]: the corregated flex hose I was using for the upper hose. The...

If you use rust inhibitor [ why wouldn't you? ] the coat hanger will not rust.

The stat shown in post #6.......is sold by Milodon, Shaw, Mr. Gasket & probably others....& made in the same Chinese factory. [1] The three leg top piece is s/steel. The earlier ones that were made in the US had this section made out of brass. [2] The drilled hole in the side are only needed if...