21EC Engine Mounts (Volvo)

Captain Nice

Well-known member
Joined
Oct 10, 2013
Messages
199
Fluid Motion Model
R-21 EC
Hull Identification Number
FMLT2103E516
Vessel Name
Toot-Toot (2016)
I've observed that three out of four of the mounts' threaded studs have "settled" about 1/4" relative to the top of the base casting (as compared to the fourth one). The circular rubber is not torn, but has pulled-away from the base casting about 1/16" all around. And the engine doesn't seem to shake as much at idle as it used to. Is checking the engine/shaft alignment the best way to determine engine mount failure? These original mounts (2016) have 700 hours on them (relatively low idle time) and I'm curious what life others have gotten. They're not inexpensive, if you can find them. I'm told by one vendor that they're currently backordered in the US; will have to come from Belgium. Original part # is 3888806, but has been superseded by #23431724. Thanks to anyone willing to share their knowledge/experience.

Bill
 
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