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Old 03-30-2019, 09:41 AM   #1
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Engine Replacement - Winter Project

Our winter project this year was to install a new engine in our boat, which we have just completed.

The original Ford Lehman had 8000 hours on it, and finally had a failure of the #6 cylinder at the end of our cruising season last year. Interestingly, other than a slick out the exhaust and a tapping sound, it continued to run.

After much back and forth with options, we decided to go ahead with a remanufactured Ford Lehman long block as the best approach. We are very fortunate to have an excellent shop nearby that rebuilds Lehmans regularly, so this was a deciding factor.

I appreciate the folks that post pictures and share information on how they did things so I am posting a link to my blog just in case anyone finds it helpful.

2018/2019 Engine Refit – M/V Waves of Grace

I did all the work myself and the project was a success.
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Old 03-30-2019, 10:07 AM   #2
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Wow, GREAT job and the amount of the process you captured on your blog is incredible. Thank you!
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Old 03-30-2019, 10:24 AM   #3
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I'm happy to answer any questions about the process.
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Old 03-30-2019, 10:45 AM   #4
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Great job and nice to have a capable re-builder nearby. Any chance the failure of #6 was exhaust geometry layout?
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Old 03-30-2019, 11:54 AM   #5
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Read the whole process. The ups and downs and all of the little bits.

Nice job!
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Old 03-30-2019, 12:06 PM   #6
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Quote:
Originally Posted by sunchaser View Post
Great job and nice to have a capable re-builder nearby. Any chance the failure of #6 was exhaust geometry layout?
The guys we used for the reman were great. Nothing leads me to believe it was anything to do with the exhaust geometry.
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Old 03-30-2019, 12:09 PM   #7
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Read the whole process. The ups and downs and all of the little bits.

Nice job!
Thanks. The whole process was varying ratios of emotional, intellectual and physical effort.
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Old 03-30-2019, 03:00 PM   #8
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Great job, nice attention to detail. Thank you for taking time to document the project. Being from Victoria I appreciate the reference to local suppliers in case (but hopefully not) we ever have to undertake a similar project.
Enough work, now go enjoy your boat!
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Old 03-30-2019, 06:50 PM   #9
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The guys we used for the reman were great. Nothing leads me to believe it was anything to do with the exhaust geometry.
Silting in the coolant passages adjacent to no.6 is a possibility. Furthest from the circulation pump. From reading threads here,if there is a piston failure it`s usually no.6.
Did you or the rebuilder see any apparent cause which might assist fellow Lehman users?
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Old 03-30-2019, 07:57 PM   #10
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Very, very nice work. Your engine room looks so nice now.
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Old 04-09-2019, 12:50 PM   #11
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That was a fun read. Thanks so much for documenting everything. I really enjoyed all the clever shade-tree engineering. I do stuff like that all the time and have found that my closest friends have the same can-do/try-anything mentality. It's great to be handy, it's saved me tens of thousands (maybe hundreds?) over the last 35 years. That savings has allowed me to enjoy all kinds of great adventures that I wouldn't have been able to afford otherwise.
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