Posted by Janicholson on January 12, 2011 at 07:36:35 from (199.17.6.126):
In Reply to: Best engine? posted by DanR on January 12, 2011 at 07:20:29:
The 2 Stroke engine from Detroit Diesel was (and probably is) the most produced series of similar design ever. They were powerful and flexible in attachment, rotation, intake exhaust placement front or back powertakeoof, and other great innovations. They also have issues: poor fuel efficiency, poor ability to hold fluids inside, poor environmental controls, and week kneed torque ar less than wide open throttle.
There were few motivations to follow that lead with engines for all purposes.
IH engines were modern for the times they were in use. OHV for most, Multi Cylinders, Good breathing. Governors that were responsive, and reliable (still are)
The similarity between the engines produced by IHC in each of the series of tractors is pretty amazing. Similarities between F series engines and Letter series are a continum rather than a total change. The differences between a C-113 and a 450 gasser are mostly in scale rather than layout and design.
I would have wished they used 5 main bearings in the letter series. I also wish they would have used cross flow head design at some point, and 2500rpm operation earlier. I feel they were designed to stay away from the bleeding edge of technology to allow farmers to reasonably care for them.
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