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Cummins 4BT 3.9M - good engine?
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08-27-2017, 02:08 PM
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Ski in NC
Technical Guru
City:
Wilmington, NC
Vessel Name:
Louisa
Vessel Model:
Custom Built 38
Join Date:
Jan 2014
Posts:
6,194
Rock solid engine. Very reliable. Downside is it tends to shake (itself and the boat) at low idle. Well designed mounts can isolate those vibes somewhat, but still shaky. 900rpm up, reasonably smooth. Hard to kill, parts available anywhere.
Ski in NC
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