Yea...I love the old Thor stuff. Carl Kiekhaefer was quite the designer. He had the perfect knowledge background for magnetic coil design that the old Thor outboards so desperately needed to improve their weak spark problems and this improvement combined with selecting the right carb, put the old Thor in a new class of dependability. After he fixed the ill starting returned engines from Montgomery Wards that had put Thorwald Hansen out of bussiness, Carl's first 4 outboard products in 1939 (before he changed his product name to Mercury) were mostly an upgraded Thor product line.
People could see that if Carl could fix all the problems that the little single cylinder Thor had, then he was in his element. The first engines he rebuilt had some minor adjustments made to the mixer valve that greatly improved the fuel delivery at start up. Next he would go on the spruce up the single cylinder Thor brand engine by designing a very nice looking fuel tank and lower pan. This was actually Carl's first shot at outboard design and he called this first version the Thor Streamliner. He loaded this engine with the very dependable MS 850-1b Tillison carb that combined the ability to choke the engine at startup and had adjustable high and low speed fuel needle valves and a hotter sparking coil made a quick starting & dependable engine out of the little row boat engine. Even though it looked good for the time, the Streamliner was quite hokey looking compared to the fully finished K1 that came out the following spring of 1940 sporting the new cast aluminum towers and gear case plus the new name MERCURY. I have that engine too...
The engines he took to the 1939 outboard show (still under the Thor name) were; The opposed twin, and the two in-line engines that he renamed Alternante -2 and Alternante -3. NOTE: There were only 100 Alt-2's manufactured and about 20 of the Alt 3's manufactured during the year of 1939.(The Alt-3 was the first
inline 3 cylinder outboard engine ever to be manufactured) and also in the lineup was Carl's first project engine the "Thor Streamliner". Carl had taken the little single cylinder Thor single and dressed it up to look the part. It was debuted at the1939 show but wasn't a heavy seller. This engine was Carl's first go at outboard engine design and is known by collectors as the "Mercury's story engine" because it was the first outboard to carry the Kiekhaefer name and is actually the engine that kicked off his outboard business.
There were only 473 Thor Streamliners made. After searching for almost 20 years, I am lucky enough to have two of them.
One of them I am restoring and the other I am posting a picture of. The Thor Streamliner is one of my favorite engines of my collection. I also have the very first Thor outboard model. It is an early 1935 model and was only manufactured for 6 months in this initial configuration. These are rare as well and it being the first engine Thor manufactured, I like it a lot too. If it were not for these little row boat engines, Mercury outboards would probably never have come to be.
If you have a THOR outboard engine, please let me know because you may have one of the rare models and anyone that would like information about these engines can contact me at: [email protected]
-Carl