"repowering" c-27

[Ron F.]

I am faced with the potential problem of repowering my C-27, inboard.One option is to mount a 9.9 hp outboard on the transom.Any ideas or suggestions as to the shaft length, mount and location on the transom?What would be the minimum hp outboard recommended?Should I tie in the internal fuel tank or use the typical tank for outboards?I appreciate the feedback.

 

[Peter18012]

27 OB

I've got a '74 Cat27 OB model. It's powered by a 2000 Johnson 15HP 2-stroke. The OB has remote controls, electric start, alternator. It mounts on a factory mount with an opening thru the transom, so that it tilts up into the lazarrette. I replaced a '91 Evinrude 9.9 with the 15. The 15 has more power to push thru chop, against headwinds, and tow a dink. But max speed is not signicantly changed, still about 5.9-6K. The 15 burns about 1.25 GPH, whereas the 9.9 burned about .8GPH. I regularly motor long distances (60NM) w/o stopping, so I'd want your internal tank for the greater fuel capacity. (I have 2 8.5 gal tanks in the lazarrette). If you now have an IB, I'm not sure where you'd put the standard 6-gal OB tanks.You'll definitely need a longshaft (20"), and if you mount it on one of those kickup transom brackets, maybe an extra long (25") shaft. If you use the transom bracket, you'll want to rig some way to remotely and easily pull up the OB from inside the boat. (Your new OB will weigh about 80 lbs, or 100+ if you get a 4-stroke.)

 

[botez]

Why not an inboard??

Ron,What inboard did you have? Why don't you want to repower with an inboard? I recently repowered my '80 C-27 keeping it inboard. Just wondering why you'd want an outboard hanging off the transom if you already have all the provisions for the inboard.....Regards,Frank Davanzo#4583 "Miss Virginia"