Chaparral Sunesta 236 with Merc 5.0 MPI underpowered?

WJL24

Cadet
Joined
Jun 9, 2012
Messages
11
I'm shopping for used boat. Drove a 2004 Chaparral Sunesta with 5.0 Merc and it seemed underpowered. Is that to much boat for that engine with a standard Alpha One outdrive? Topped out around 37 with 5 people. boat is stored on a lift so the hull is clean. I slalom ski and the holeshot seemed like it was barely enough. Anyone have this boat with this motor?
Had standard 3 blade aluminum prop. Would 4 blade make much difference?
 

Maclin

Admiral
Joined
May 27, 2007
Messages
6,761
As the potential buyer, then if it felt underpowered then it is. A 23 foot deck boat is on the cusp with the 5.0. Regarding skiing behind it, need to know what pitch the prop is that is on it now. Could probably just go with next smaller pitch. But for any prop recommendations would need to know the RPM's at the top speed it can reach, along with the pitch.
 

superbenk

Commander
Joined
Oct 27, 2008
Messages
2,033
I have a 5.0 in my 20’. Anything bigger would be too much for he 5.0 in my opinion.
 

tpenfield

Moderator
Staff member
Joined
Jul 18, 2011
Messages
18,169
Underpowered. 5.7 or 7.4 would be the thing to look for in a 23-24 foot boat.
 
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