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Old 04-29-2018, 09:00 PM   #1
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Unhappy 1991 2100 ldc

Finding engine parts for this 2 stroke is hard, anyone know a supplier. Or should I consider an engine swap? Not even sure it is possible to swap out on this sterndrive.
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Old 04-29-2018, 09:50 PM   #2
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What engine you have on it?
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Old 04-29-2018, 10:05 PM   #3
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Finding engine parts for this 2 stroke is hard, anyone know a supplier. Or should I consider an engine swap? Not even sure it is possible to swap out on this sterndrive.
Is this an L drive? Force power head and custom lower unit, searching the internet is you best bet. Repowering is very difficult with this set up and would require reworking the transom. Not worth it IMO.
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Old 04-30-2018, 01:38 AM   #4
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As near as I can tell this is a US Marine Force 120. Yes it is a L, sterndrive.
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Old 04-30-2018, 02:26 AM   #5
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As near as I can tell this is a US Marine Force 120. Yes it is a L, sterndrive.
A few years ago someone else was asking about this package and I did a google search and found a few online sources for parts. Have you tried this?
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Old 04-30-2018, 08:51 PM   #6
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Found an outfit online selling the head unit for about 1500, more than I thnk I want to go. If any of the other components fail it will really run up the bill. Reworking transom would be a long project I think, but hanging an outboard on it might be the cheapest way to go in the long run. Wife says I cannot buy a new boat, LOL
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Old 04-30-2018, 11:10 PM   #7
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Installing a outboat will require some work to the transom as it designed to carry load between the current power head and outdrive. You would need to reinforce the transom wall and cut into the integrated swim platform.
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Old 05-01-2018, 02:17 PM   #8
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You have very little options. Converting an L-Drive to any outdrive is going to be cost prohibitive and very, very difficult. The L-Drive transom assembly comes through the bottom of hull, like a saildrive or a pod. All other Mercruiser and Volvo outdrives come out the back of the transom.

The same applies to sealing the transom assembly in the hull, then installing an outboard bracket. Either option would cost more in fiberglass and fabrication than the boat is worth. That is BEFORE you buy and install a new engine and outdrive or outboard.

This is a Maintain/Repair to the Grave technology.
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