Top speed 4 Winns with 4.3l

bulachip

Cadet
Joined
May 23, 2011
Messages
18
Hi everyone

I feel like a little kid. All I seem to want to do is see how fast I can get this thing to go. Ahhh life's simple pleasures.

My wife, would be happy just bobbing around and talking.

Maybe I like the speed because it is too loud to talk over?!

Anyway.
The boat is a 1987 4 winns 170 horizon with a 4.3l 2bbl carb and a mercruser outdrive.
:rolleyes:
With the 19 pitch prop top speed with two people and a dog was roughly 40 with RPM too high (5200!)

With the 21 pitch top speed is 43-44 with two and a dog at 4900rpms

Do you think I should go to a 23 pitch?

Is something wrong with my boat, or is it just perhaps a bit tired?

Some claim 50mph from simmilar set ups

I

With the 21 pitch top speed
 
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