1970/2008 22'S FLATBACK WITH A 4 STROKE SUZUKI 175HP

[wysongja]

Before I finished our 22'2 I was looking for info on how much power is needed to push a 1970 Flatback.  We went with a 2008 Suzuki 4 stroke.  It is on a porta bracket.   Our boat will do 43 mph top end at 5900 rpm's and 25 mph at 3800-4000 rpm's.  We are very happy with the performance.  It has averaged 3-3.5 mpg depending on speed/cargo/people etc.  Hope this helps those looking for answers on powering the Flatback.

Wysongja

[Marcq]

How much horse power ;)

Marc..

[wysongja]

175 HP

[compcrasher86]

My '73 22-2 with a Hialeah hull has an old '87 140hp Evinrude V4. At WOT she can push the boat 43 at 6000rpm. Since the engines old and I can settle with 35, I dont have her opened up all the time. Your boat is probably much heavier though, mine is pretty bare-bones. Trust me though, 43 in a 22-2 is quite an exhilarating ride, just watch out for big waves, they can give you a thump or two

[71flatback]

I have a 115 yamaha fourstroke. I was gonna put it on my flatback when its done. Do you guys think its gonna be enough or will i eventually have to go with more hp?

[slippery73]

Should be plenty on a flatback. My buddies 73 222 semi-v with a 115 tower of power mercury did 38mph. Thats with a 30 year old motor.

[compcrasher86]

Yea 115hp is definately enough power, but I bet that the yamaha four stroke is way way much heavier than the tower of power or any other two-stroke, so it may not be as fast. I, however, will be repowering with a Spankin' new 115 E-tec once my ol' V4 dies out on me

[Aquacastle]

We are looking at the Suzuki DF300 for a repower on our 87 250ccp.  Also looking at the Porta bracket. How was the install of the Porta bracket and are you still happy with performance of your Suzuki?
Thanks
Tim