www.iFourWinns.com

Something to be aware of; a bit more expensive than a new small block V8 I'm sure !

http://www.ybw.com/forums/showthread.php?367753-What-happens-when-you-stop-to-quick!

Holy smokes.. Thats crazy. Looks like a bomb went off.

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1997 Horizon RS 180
5.7 GL Volvo Penta /SX drive. (1.60)
2018 Ford F-150 super crew 4x4

I've heard of this happening but its more rare than inboards since the height of the powerhead above the water line and the design of the exhaust system usually prevents it from happening. Yep that's about a 7-8 grand repair at US prices, depending on the engine make and model. Late model Yamaha 4 strokes have been having problems with corrosion the upper exhaust system that spreads to the pan under the powerhead and if its not caught soon enough it becomes a major repair.

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88 Four Winns 200 Horizon
4.3 OMC Cobra-4bbl
2002 Walker Bay 10/2012 Suzuki 2.5
2008 Walker Bay 8

1998 Jeep Grand Cherokee 4.0/Selectrac
2007 Jeep Grand Cherokee 5.7 Hemi/Quadradrive II

It looks pretty grim, doesn't it , the snapped conrod and bits broken off the block. The last post in the thread indicates : "Yamaha have been replacing powerheads under warranty for this" and a modified ECU to prevent it, so it sounds like it's not uncommon !

Interesting, much as I want an OB next even they have their problems. My I/O mechanic loves I/Os because of their high maintenance needs, but even he says that the engines of I/Os and inboards tend to last longer than OBs. OB much less work over time though.

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88 Four Winns 200 Horizon
4.3 OMC Cobra-4bbl
2002 Walker Bay 10/2012 Suzuki 2.5
2008 Walker Bay 8

1998 Jeep Grand Cherokee 4.0/Selectrac
2007 Jeep Grand Cherokee 5.7 Hemi/Quadradrive II