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Author Topic:   Whaler 31
krogeo posted 01-05-2007 09:52 PM ET (US)   Profile for krogeo   Send Email to krogeo  
I spent the last hour or so reading many posts regarding the Whaler 31. Lots of good info but still on the fence considering purchasing one with 454 crusaders which is in pretty good shape and priced below low end of NADA. Is there a retrofit for the balance issues on the early models? Was able to track down the OEM propulsion and performance data for an 1989 which shows 20.8-KN, at 3000-RPM and 23.4-GPH. Is this for real? Does anyone have recommendations for carburetor and propeller modifications to increase speed and decrease [fuel consumption]?
jimh posted 01-05-2007 11:44 PM ET (US)     Profile for jimh  Send Email to jimh     
The big inboard Boston Whaler boats were not made for too many years, were quite expensive, and did not sell in anywhere near the volume associated with the smaller, less expensive, and longer-running hulls, and for those reasons I am afraid you may not be able to get a first-hand owner reply to your inquiry.

My guess is that a 31-footer with twin large displacement inboards is going to burn a lot of fuel at speed, and this may account for the appearance of some of these boats on the market today due to the high price of fuel.

A Boston Whaler is generally a premium boat, and I don't think the 31-footers were an exception to that rule. I hope you have success in dredging up some owner comments, however, if you don't, please understand the circumstances.

draftsman posted 01-10-2007 10:06 AM ET (US)     Profile for draftsman  Send Email to draftsman     
Yes, it's for real and probably not going to get much better if any. Too much weight because of traditional Whaler construction methods.
The fix? (grin or frown, whichever you prefer). Lead weight in the right place. That's how they were "fixed".
Sad but true....
JEvans posted 01-15-2007 03:02 PM ET (US)     Profile for JEvans  Send Email to JEvans     
I have one of these rare 31 foot Boston Whalers and run to the east coast canyons most weekends in the summer weather allowing. My boat has the diesel option with twin 300 Cummins 6BTA's and we run roughly 20-23 gph at 2400 RPM's at 24 kts. Have never run or seen a 31 with gas power my guess is they would be quite expensive to run with gas prices 50 to 75 cents more than diesel. I use about 160 to 180 gals for a full day trip to the canyon. Take a sea trial and make sure you record how much fuel is aboard they will try and improve performance by having an almost empty tank. The first time you load the puppy up for a long haul the performance will be less. I have changed the pitch on my props to 21 from 23 because I have what Whaler calls a heavy boat (extra fuel capacity, AC, and a generator)you could try this also but you will give up top end speed for the lower end. Hope this helps feel free to email any question.

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