21 Superboat with 2.5/280 Mercury

**Lilstafo** · 03-30-2018, 11:49 AM

Okay I need you guys opinion. I have a 21 superboat with a
Mercury 2.5/280 and I need the best prop I can find to run top speed.
What prop should I get ?

**Superbender** · 03-30-2018, 12:32 PM

Need more info.is it on a set back,what is the set back,what are you using now,there is no set in stone prop for any particular boat motor combination.try as many props as you can I would start with a Mercury pro et

**vnemous** · 03-30-2018, 01:37 PM

You will need a yamaha to run the big numbers

**TraceF3** · 03-30-2018, 06:25 PM

It's never gonna run good. I'll take it off your hands so you don't have to worry about it any more

**vnemous** · 03-30-2018, 07:05 PM

Originally Posted by TraceF3

It's never gonna run good. I'll take it off your hands so you don't have to worry about it any more

Hmm my superboats in Stuart, headed home in two weeks

**RSWORDS** · 03-31-2018, 11:18 PM

Originally Posted by vnemous

Hmm my superboats in Stuart, headed home in two weeks

Just have them drop it at my house... I'll hold onto it for you

**JWS** · 02-29-2020, 03:40 PM

the old 2.5 isnt a good motor for tha hull IMO. Hull is too heavy for a high rev motor. I would look at the merc 300. Great motor for that hull. 2 of them would put you in the trip digits easily. If you want to sell the 2.5 i have a light hydrostream i would put it on. used 300 mercs are plentiful.