What Engine size?

[Fr. Frank]

130 Yamaha, DT140 Suzuki, Mercury/Mariner 2.4/2.5L V6, or inline 6cyl 140. That keeps your engine weight in the 280-340 lb range.

[jorgeinmiami]

Would love to have either a 150 Merc EFI or Yami.

But my wish list would be an E-Tech 150-175 but $$$$ not there.

I wonder what kind of performance I would get with the 130 vs the 150's ?

I know I can get by with a smaller engine but I do have to teenagers that want to wakeboard and such. Also when you load up the boat with a couple of my fat buddies (me included) and the gear I want the ponies to go with it

[Bushwacker]

The 150(165) E-Tec will get you close to 50 with a light load; the 130 should run low 40's. Although I'm partial to the lighter engines like Fr. Frank, with 4 folks and 4 sets of dive gear and tanks on my Seafari in the Keys last week I was glad to have the extra omph of the V-6!

[Fr. Frank]

I posted this info in a different forum, but the USCG (not the mfg) recommended max HP rating of a 20MA is 230 hp. Add a swim platform and it jumps to 250 hp.

The formula for a single engine is (LxWx2)-90= max recommended HP. Max HP is always rounded up to next higher 5 hp increment.
Length is LOA, (including permanently mounted fixtures or accessories) rounded up to the next higher foot. Width is beam at widest point, rounded up to the next highest foot.

If your transom is 30" or if you have a bracket behind a closed transom, the multiplier for single engines is 2.5 instead of 2.

If you have twin engines, the formula is (LxWx3)-50= max HP. This is why the early Potter-era 23'3" Seacraft CC twin OB hull had a max HP rating of 500 hp, later reduced to 400. The new 23's are mfg rated for 300 hp max

So with a bracket