The two engines

 

                                                     Engine01.gif (15304 Byte)        

After I made the support for this engine, Blain send me this bolt pattern. For you guys who use Briggs or Kohler engines this should be the same.

Note:  The off set bolt pattern is a pain to get right with the vertical axel in the middle of the duct. I used the prop to get everything lined up.

For the record, down here some 4 cylinder boxer engines made by Subaru. Take your pick if you want to hover with this brand.

  I decided on the EA-71 for simplicity and light weight. It has one cam-shaft and no expensive timer belts or electronics. With some mild tinkering you can get easy 10 hp more out of it. Opposite the info down here I have a 1991   74 hp engine. Donno why its not shown. And even a 1992 spare engine without carb. and starter-motor. (Just $25.00, it ran 55k miles)

On a auto gyro in Belgium they made a EA-71 turbo !!

 

year  general cc         hp         torque     type       designation

73-74 1400 1361 61@5600 69@3600 EA-63 1400
75 1400 1361 58@5200 68@2400 EA-63 1400 2wd
75 1400 1361 56@5200 67@2400 EA-63 1400 4wd
76 1400 1361 58@5200 68@2400 EA-63 1400 2wd cr 8.5
76 1400 1361 56@5200 67@2400 EA-63 1400 4wd cr 8.5
76-79 1600 1590 67@5200 81@2400 EA-71 1600 2wd cr 8.5
76-79 1600 1590 65@5200 80@2400 EA-71 1600 4wd cr 8.5
80-82 1600 1595 68@4800 84@2800 EA-81 1600 cr 8.5
80-82 1800 1781 72@4800 92@2400 EA-81 1800 2wd cr 8.7
80-82 1800 1781 71@4200 92@2800 EA-81 1800 4wd cr 8.7
83-87 1600 1595 68@4800 84@2800 EA-81 1600 cr 9
83-84 1800 1781 73@4800 94@2400 EA-81 1800 cr 8.7
83-84 1800 1781 95@4200 123@2800 EA-81T 1800 turbo cr 7.7
85-87 1800 1781 73@4800 94@2400 EA-81 Brat, 85 2dr GL
85-89 1500 1595 69@4800 86@2400 EA-81 2dr
85-86 1800 1781 82@4800 101@2800 EA-82 4dr
85-86 1800 1781 94@5200 101@2800 EA-82 GL-10 MPFI & XT
85-86 1800 1781 111@4800 134@2800 EA-82T turbo
86-94 1800 1781 90@5600 101@2800 EA-82 SPFI
86-89 1800 1781 84@5200 101@3200 EA-82 SPFI 4dr 2wd
87-88 1800 1781 84@5200 101@3200 EA-82 carbed
87-91 1800 1781 97@5200 103@3200 EA-82 XT MPFI
87-90 1800 1781 115@5200 134@2800 EA-82T turbo 

 

This is the best curve I could find of the EA-71. Here you can see how the Japanese setup there engines. Mine is just 74 hp.

 It's a dual carb one !!!

I made an alteration to the throttle lever. The pipe/hose for the cooling was going to be too long if I ran it around the outside of the engine. So I decided to take the shortest route to the radiator.

That meant across the top of the engine and removing the throttle lever. First I had to make a small spacer for the thermostat housing (almost ½ inch)  to get the outlet on the right height and turn it 180°. And I had to move the throttle lever to the other side of the carb. The fixed point for the outer (adjustable) part of the cable was welded to the air filter housing, and the lever itself had to be trimmed down so it could run freely off the intake manifold.

New thermostat spacer

 

 Left pic. On the right/top side of the copper pipe is the 180° turned thermostat.

Right pic. Throttle lever moved to the other side of the carb.

I made a connection between the engine and the air drive to make the whole thing more stiff. I used ½ of the original rod, with the rubber bushing connected to the original mount (left side). Welded a same ½  rod with rubber bushing to it and made a connecting point on the air drive, just under the bearing.

This carb is probably very different from the USA type. It only has two vacuum leads (shown in the blue thingies). It has an electric operated idler jet to prevent it from dieseling when shut off, if the engine is hot (shown in the red circle).

Here is how it looks.

 

 

There is not much info on the lift engine except what can be found on the Kohler-website, so here is a picture of my 15 hp lifter with the fan mounted.

Now here is the first startup, all is hooked up with wires and hairpins but what the heck !!