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More problems bf225. Hole in block!!!

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clkelley78

Contributing Member
More problems!! Lower motor was spitting water out the lower cowling and sent it in for repair. They found a hole in the block! 2007 year with 320 hrs on this motor. Has anyone welded on blocks and is it worth it risking 50/50 repair? Other option is replacing block. Unreal!!
 
Waiting on a video and pics from the Honda mechanic, but more than likely its corrosion inside the block that caused pin hole or crack . I bought it in 2015 with 240 hrs and run it only in saltwater, but flush it when done with water hose for 10-15 mins and also flush with salt-away. Reading into past forums, this happens often... Not looking good! I just spent almost $800 a few weeks ago after throwing a timing belt due to failed pulley.
 
Wow sounds like my motors. I just lost the pully 2 weeks ago and destroyed the valves. Tomorrow night Im going down to FL to get a new pair so I can finish out my charter season and ordering the new mercs to get put on this winter. Honda service is just to hard to come by in Chicago.
 
From my experience when you dismantle the engine you will find other areas inside the block that are close to corroding through.Unfortuanately this is either a powerhead replacement or engine replacement. I would say that the previous owner did not care for this motor properly given the repair history you mention.
 
clkelley78 said:
Waiting on a video and pics from the Honda mechanic, but more than likely its corrosion inside the block that caused pin hole or crack . I bought it in 2015 with 240 hrs and run it only in saltwater, but flush it when done with water hose for 10-15 mins and also flush with salt-away. Reading into past forums, this happens often... Not looking good! I just spent almost $800 a few weeks ago after throwing a timing belt due to failed pulley.
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Here is a pic of a hole in the block and washout on the block where the heads bolt to the block.
 

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Yip,that's exactly what I mentioned,usually a result of poor flushing combined with lack of use.Low hours is not always a good thing when used in saltwater
 
iang6766 said:
Yip,that's exactly what I mentioned,usually a result of poor flushing combined with lack of use.Low hours is not always a good thing when used in saltwater
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The pervious owner had a Bob's Low Water Pickup Nose Cone on the lower unit which blocked the normal water intake. This was determined to cause this issue "Rot block". I replaced it back to standard last year when lower unit when out, but I guess the damaged had already been done.... I always flushed, but again the damaged was done. Now looking at other options to fix....
 
Why not find an experienced welder and clean up that area nicely, remove paint and build up weld or add a bit of new material in the corroded area, finish the spot carefully where the gasket goes and then repaint. Looks like this area is not near the cylinder and does not need to hold a tremendous amount of pressure.
 
maxthrottle said:
Why not find an experienced welder and clean up that area nicely, remove paint and build up weld or add a bit of new material in the corroded area, finish the spot carefully where the gasket goes and then repaint. Looks like this area is not near the cylinder and does not need to hold a tremendous amount of pressure.
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Welding the hole is not a problem. The Pic of the block /cylinder wall was the best one, others are worse. My Honda mechanic found a newly rebuilt Honda motor that I'm going to slap the new long block on. When I get time on the spear motor, I'll either replace with new short block and slap the heads on or find a welder that has experience in welding casting. I work in a machine shop so after the welds, I can put on the mill and skim cut the block face square, then rebuild that motor and sell. Runs too good now to just scrap....
 
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