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  CONQUEST 21: Maximum Engine Weight

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Author Topic:   CONQUEST 21: Maximum Engine Weight
BW21CT posted 12-27-2004 10:34 AM ET (US)   Profile for BW21CT   Send Email to BW21CT  
What is the [published specification for] maximum engine weight for a 1998 CONQUEST 21? Thanks Mike. P.S. Hope everyone had a good Christmas.
jimh posted 12-27-2004 10:56 PM ET (US)     Profile for jimh  Send Email to jimh     
In most years of the CONQUEST 21's production there were no listings in the specification table for maximum engine weight for any of the boats made by Boston Whaler. In the 2000 model year catalogue there was a column in the specification table for "MAX ENG WEIGHT" but no value was listed for the CONQUEST 21.

There was a footnote for the MAX ENG WEIGHT listing which stated:

"Exceeding the recommended engine weight may 1) put interior floor scuppers underwater, 2) cause the boat to porpoise at mid-throttle, and 3) increase time to plane."

You could impute the maximum engine weight by considering the boat to be rated for a 250-HP engine, and use the weight of a 250-HP engine made in those years as a reasonable value. Since there were no four-stroke engines in that horsepower range then, you'd have to stick with a 250-HP two-stroke. A Mercury OptiMax would have been about the heaviest 250-HP engine available. It weighs about 505-lbs.

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