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Author Topic:   170 Montauk 4stroke Performance
Maximus posted 08-06-2003 08:02 PM ET (US)   Profile for Maximus   Send Email to Maximus  
This is probably all prop, but does anyone feel a bog at 4000RPM on a WOT drop from idle? The motor goes fine after this ever so slight bog.
Barney posted 08-06-2003 08:12 PM ET (US)     Profile for Barney  Send Email to Barney     
Max, I haven't had this problem. I've got to hold mine back under acceleration. What kind load, people wise? Do you know what prop they gave you, 18 pitch? Jim
Maximus posted 08-06-2003 09:28 PM ET (US)     Profile for Maximus  Send Email to Maximus     
18P SS Vengence Prop.

Varying loads. I will update next week as I am off boating all week!!!

Perry posted 08-07-2003 12:59 AM ET (US)     Profile for Perry  Send Email to Perry     
What make motor, year and what hp are you talking about?
Barney posted 08-07-2003 08:48 AM ET (US)     Profile for Barney  Send Email to Barney     
Perry, He's got the Mercury 90 4 Stroke on that 170, which is what I have.
Max, with a loaded boat 6 to 7 people, the boat is slower out of the hole as expected but at 4300RPM there is a surge in power. I don't know if that was what you are feeling on your boat. Jim
Maximus posted 08-07-2003 09:19 AM ET (US)     Profile for Maximus  Send Email to Maximus     
Maybe I am feeling the surge after 4000 rpm not a bog. It is just different from my old 17 footer 2 stroke performance.

make/model/year
2003 Mercury 90 HP 4stroke.

Rodger posted 08-07-2003 10:39 AM ET (US)     Profile for Rodger  Send Email to Rodger     
Maximus,
I have a Montauk 170 with a Mercury 2003 90HP 4-Stroke / 18P Vengeance prop. I also notice a slight bog or lack of acceleration at 4000 RPM when go immediately from idle to WOT. It is very slight at sea level but very noticeable at 5000ft elevation. If I accelerate in a normal fashion there is no bog and the motor performs beautifully. I am under the impression that a carb adjustment and synchronization is needed.
Rodger

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