Destroyed Bravo 3 upper unit
#1
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Joined: Jul 2007
Posts: 73
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Love this site - just pulled apart my B3 upper due to no forward gear. This is what I found. Anyone have this happen? Boat is a 2004 Cobalt 360, twin 496's 375hp. Also the lower forward gear race split in the middle and spun on the housing.
#4
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Joined: Jul 2007
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No- I ordered all the bearings and races, when I went to size up the boss in teh housing for the inner race, the race slid right on. Upper unit is junk. I am going to swap my gears over into another housing I have. Next spring I will be installing 2 new Bravo 3 X drives. I'm in awe this happened. Anyone have a reason for this type of failure? I'm also shocked to hear an XR did this. I thought the X and XR drives were much more robust.
#5
Gold Member

Joined: Jan 2002
Posts: 702
Likes: 26
From: Southern, IL.
The XR shaft broke on a 2006 29 Fountain w/single 525 EFI, ,he said his drive jumped into neutral at 60 mph, then jumped back into forward gear ,next time he tried to plane out he snapped the shaft, probably cracked it when it jumped gears.
#6
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Joined: Jul 2009
Posts: 8,527
Likes: 706
From: Taunton Ma
You're shocked that all your engine torque going through a shaft the size of a teachers highlighter to a pair of props pushing a heavy 36' boat broke? It's the same shaft on all bravos. Doesn't matter if it's x, xz, or xr
#8
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Joined: Nov 2002
Posts: 4,176
Likes: 333
From: ankeny,ia.
No- I ordered all the bearings and races, when I went to size up the boss in teh housing for the inner race, the race slid right on. Upper unit is junk. I am going to swap my gears over into another housing I have. Next spring I will be installing 2 new Bravo 3 X drives. I'm in awe this happened. Anyone have a reason for this type of failure? I'm also shocked to hear an XR did this. I thought the X and XR drives were much more robust.


