I guess this may be the last info entry on this thread...
Last night we did the final test runs on the engine
- 5 min to warm up
- 5 min to cool down
- 3hrs and 50 min at wide open throttle
(5900rpm loaded with prop at 17-18 degrees)
Ran excellent, no problems at all. Plugs checked clean. No issues at all.
Haven't done the final thrust testing yet, but initial numbers look like 415lbs at max power using a pull spring scale. This combined with the prop setting has me confident we have 113-114hp |removethispart|@ 5900rpm.
From a driving vehicle perspective....
- Carbs should be CD150 Strombergs instead of
CD175's...they are a titch big.
- The 226/395 cam would work better for a vehicle, the
228/415 idle and peak power seem a little much for a
street/trail driver, but probly ok for a 2WD cruiser.
- Fuel burn...
Over the almost 4hr we averaged 17.9 litres per hour,
about 4.2 US gallons per hour...put it into perspective,
thats about 24 miles per gallon on an airplane at 120
mph...this would be a reasonably economical vehicle
engine.
It's strong, reliable and sounds awesome, I'm going to finish the twin to this engine with the CD175 carbs and the 226/395 camshaft and it's going in our airplane...damn this thing works well.
Now I have to finish the mounts for the 2.0L going into my wife 4dr kick....till next time
Zag