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Author Topic:   Converting to Single From Twins on Whaler Drive Boats
surveyingdawg posted 09-13-2015 07:16 AM ET (US)   Profile for surveyingdawg   Send Email to surveyingdawg  
Found a 22 WA [later perhaps inferred that the boat was a Boston Whaler REVENGE 22-Walk-Through Whaler Drive] with no engines and a [Whaler Drive] rigged for twin engines. How much trouble would it be to put on a single 200-HP to 250-HP [engine]? How would [a boat with a Whaler Drive that previously had twin engines] ride with a single engine?
jimh posted 09-13-2015 10:25 AM ET (US)     Profile for jimh  Send Email to jimh     
I am not familiar with the Boston Whaler model you call a 22 WA. What was the model year for that boat?

I do not foresee much "trouble" in re-rigging a Boston Whaler boat with a Whaler Drive to a single engine installation from a twin engine installation. The transom holes for the twin engines would have to be repaired, of course, and new engine mounting holes drilled. Usually on a Whaler Drive with twin engines there is a support tube rigged between the engines from the original transom to the Whaler Drive transom. That may have to be removed to allow for a single engine, but I do not anticipate much "trouble" would be created in that process.

I am not sure exactly what boat handling characteristic you are seeking by your inquiry about "ride." I have a single 225-HP engine on my 1990 Boston Whaler REVENGE 22 Whaler Drive boat, and I can tell you that I don't know of any deficiency in handling of my boat that could be attributed to use of a single engine on a Whaler Drive. A Whaler Drive boat with a single engine will have more freeboard in the stern than it would if rigged with two engines. The Whaler Drive bracket has a buoyancy box that was designed to compensate for the weight of twin engines. With the weight of a single engine on a Whaler Drive, the buoyancy box will provide more buoyancy than anticipated by the design, with the result that draft at the stern will be such that the drain holes in the Whaler Drive splash well will be above the water line. On my boat the drains are above the water line by about one-inch. I have seen some Whaler Drive boats with heavy twin engines with the splash well drains completely submerged.

Jeff posted 09-14-2015 12:00 PM ET (US)     Profile for Jeff  Send Email to Jeff     
I can only assume you were looking at the the Revenge 22 Walk-Through Whaler Drive that was listed on the Sarasota Craigslist. If the boat was originally rigged with twin there is a center support bar that you will need to remove from the Whaler Drive, then patch the old holes and mount the new motor. It is not hard at all. I did go check the listing again this morning and it looks like that boat has sold.
jimh posted 09-15-2015 12:56 PM ET (US)     Profile for jimh  Send Email to jimh     
Although the boat may have been sold, the advice about the process of converting a Whaler Drive boat to a single engine from rigging for twin engines still is applicable.

ASIDE: I have always said that a Boston Whaler boat in good condition with a fair price will sell quickly. It sounds like the boat that perhaps was the inspiration for this thread has demonstrated that property.

Jeff posted 09-15-2015 05:01 PM ET (US)     Profile for Jeff  Send Email to Jeff     
This was the boat when it was sold the first time in Feb of this year after sitting on the market for months priced at $6995 and I know the seller was willing to go lower. 22RevengeWTWDInFL?authkey=Gv1sRgCKnhpYfnsY78_wE

Just recently it was back up for sale by another seller. This time without the motors (removed) and it was listed for $8999(ish). I guess the first seller should've removed the motors and asked for more money...

jimh posted 09-15-2015 05:04 PM ET (US)     Profile for jimh  Send Email to jimh     
That boat was a bargin at either price. I really like those seat bases with built-in storage drawers. I have seen them on REVENGE 25 boats, but not on a REVENGE 22. They were a nice option.

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