Bertram33 User Forum

I have a 1986 33' Sportfish that I converted from gas to 370hp Cummings in 2004. We just returned from a 1600 nautical mile trip on the boat and our fuel consumption was 20 gph at 24.5 kts and 2400 rpm. This is a low cruise rpm for the engines. We have a ZF 1.5 gear and 21x22 4 blade props. The boat...

" I am in the Boston area and my set up is 340/454 w/ 2.5/1 gears. Bob, Sounds like my engines would be a perfect fit. I am in North Carolina. We can talk price off line. Let me know how to contact you if you are interested.

Sorry about the typo in my last message! The engines are 454 340hp !

Bob, Sorry about the engines. I have just repowered my '86 33 ft. Sportfish with diesels. I have a pair of 454 430hp Mercs. They are in excellent conditions. I have engines, gears, complete exhausts, instruments, etc. Engines run excellent. I had planned to put them up for sale this fall, I haven't ...

Eric and Mike, My boat does have 22x23, three blade props. Max rpm is 3050. The engines turn up to max rpm with these props. At max rpm boat goes 33 knots. At 2750 rpm the boat does 30 knots. Does this answer your questions? Fran,

Al, The aquamet 19 has more elasticity. The Cummins dealer was fine with the 19 1 1/2 shafts. Frank

Doug, I did the work myself, but in parts etc my cost was about $54,000. Check out the resale difference between gas and diesel and I think you will see that the extra cost is worth it. Diesel is also safer than gas. Of course, the diesel gives better range as well. Frank

Hi I have just repowered my 86 sportfish with 370 hp Cummins ReCon engines. I did all the work myself. We sea trials 2 weeks ago. boat runs unbeliveable. On my GPS speeds and Rpms. are 2400rpm 25kt. 2600rpm 27.5kt 2750rpm 30kt. Boat was full of fuel. I do not know what my fuel burn is but I think at...

quote:Originally posted by sla168 Hey everybody, I'm the proud new owner of an 88 Sportfisher. God I love this boat! I am planning on repowering from gas to diesel. Any suggestions for size, type etc would be greatly appreciated. I have some idea of what's involved and the cost but more info can't h...