Wally, I had a 27 Sportfisher with flybridge that came to me with a volvo 280 that I converted to a duoprop. Yes a huge difference. I started with a b4 and then went b5... but I had a 454 and the 1.95 ratio when I should have had the 1.65 or so ratio drive. At any rate I could put any volvo prop combo on it and it would reach top rpm and part of the problem was when uniflite gets up and flying on step as you add more speed the hull will nose down as the running surface was built to run a certain speed. My outdrive did not have a power trim unit that could help with this.
I sold that boat 2 years ago and by chance next week I am picking up my 23 Sportfish (non-flybridge) that as a blown up buick v8 mated to an old OMC stinger drive (says 225 hp). I am debating whether to repower with another engine and use my 3 rebuilt OMC drives (least expensive option) OR remove sterndrive all together and slap on an outboard bracket and large outboard to it. Your project sounds cool and I am glad you are happy with the conversion. I found an older post of yours (and pasted it below) was there another? I'd like to see pictures of your boat if you have any I can send you a few photos of mine as well if you like. Sobie2 The end of a 2 year project closing...After rebuilding v drive and gear, and new 318, performance was dismal..Have now rebuilt and reinforced transom, and volvo 290 DP installed. Last thing is to fix deck as there was some cutting done to allow engine/drive alignment. Anyone else attempted this type of project on these classic little boats. I would like a clue as to which props to purchase...I am leaning towards b-4, bit it's an expensive guess.. I am thinking the boat now wieghs in around 4500 lbs. Tks for any input....Wally in BC On Jun 26, 2:56 pm, wally <[email protected]> wrote: > Fantastic seatrial. Speed increased by 5 knots, and fuel burn down 3.4 > imp gallons. 290 dp mated to 318. Big job but worth it...Wally -- You received this message because you are subscribed to the Google Groups "UnifliteWorld" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/unifliteworld?hl=en.
