Two things, one often The boat manufacturer has motors in stock for some time before they get used. Randy Moog, My plant manager had a 246 Open with an indmar motor in it.Ībout the years not being the same, it is very common. KCS did use Indmar and PCM sea maxx's at the same time for a while in the mid 90's. Plus shafts, props, instruments, etc.Įngines I thought I might chime in here. To get a decent break on engine prices they at times bought up to two years worth of engines. Remember at Shamrock's peak production years they only made 200 boats. About 35 - 50% of all Shamrocks have engines manufactured in years prior to the hull manufacture date. They then installed their stockpiled engines until inventory was depleted. The engine manufacturer probably made them and all the other boat manufacturers a screaming deal on engines so Shamrock loaded up. What happened then? First Gulf War! The stock market dropped, fuel prices soared, boat sales slid. They must forecast production a year in advance which put them forecasting 1993 production numbers in 1992. All boat manufacturers receive a price break if their material orders exceed certain numbers. Did you ever check your serial number with Shamrock? When it was KCS, I emailed Anita Strand and she sent me all the particulars attached to my Shamrock serial number, just to have all the numbers I could get from them. Of course, an Indmar would have been a special order at that time, wouldn't it? My Mercruiser was a special order by the marina, since they were a Mercruiser repair shop.

It would make sense that they would have a Ford engine in stock over a year. I think the engines may be stocked and installed a while after purchase, in some cases. I suppose that's coded in, if it's there at all. There is nothing obvious like that in my engine model or serial numbers that would indicate the year. What is the number on the back of your Shamrock? I don't know if there's any difference between mine and others, but the last two digits on my Shamrock serial number are 98, and I bought my boat in 1998. You obviously found out what the engine year was.

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