Prop, speed, rpm

Justin Dailey

New Member
Jun 4, 2020
2
Boat Info
1990 220DA cuddy with 5.7 mercruiser, alpha 1 gen 1 stern drive
Engines
5.7 merc
ok, sure its been asked but couldn't find it. Just bought a 1990 220DA. With 4 adults and 5 kids and some gear. I top out at WOT at 3400 rpm and about 27-28 mph. 14x19 4 blade aluminum prop. 5.7 mercruiser. I know I should be doing better than that.
 
How old is your fuel filter? Your numbers look close to what we get in the higher cruise range. Our WOT is 4450 though. If carbureted, you may also want to confirm your secondary's are opening.
 
How old is your fuel filter? Your numbers look close to what we get in the higher cruise range. Our WOT is 4450 though. If carbureted, you may also want to confirm your secondary's are opening.[/QUOTE
It runs great but I do feel like it's sluggish for a big small block
 

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