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Are you sure your -5 has an 8V-71? Most of the -5's I have seen had the 6V-71, not that the "lecture" wouldn't apply the same to any DD 2-cycle engine.
2100 for the top end is usually more than enough for a coach. Bumping the top end up to 2350 may allow you to climb a hill a little faster in a lower gear but the difference is in just a handful of minutes.
I would also say amen to don't idle your engine excessively. If you have the ability to hook up to shop air before you start that would be even better. That would allow you to start the engine, put it in gear and go. Your neighbors would probably appreciate not having to hear the fast idle song of 2-cycle DD in the morning as well.
I have seen coaches idle at fast idle for hours at ski areas. Most of them after idling for less than an hour had already gone way down below operating temperature. Most were kept running because of the lack of confidence the engine would restart in the cold.
When those coaches left the parking lot you could see unburnt diesel fuel (yellow in color) staining the ground near to where the exhaust from those coaches hit the ground.
With my buses I always started them down the road as soon as the air was up. Running downhill towards town would always warm them up faster than running them at fast idle in the driveway for any length of time.
DD's were designed to be run flat out all the time. Running them easy is harder on them than running them with your foot to the floor.
Just make sure that as you are running them you don't allow them to overheat (a real possibility in any MCI with twin side radiators).
Mark O.
Castle Rock, WA |
RV and bus conversion info since 1996.
email Mark O.
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