Thread Tools Search this Thread Display Modes
Old 07-04-2014, 04:05 AM   #1
Join Date: Jul 2014
Posts: 1
Default 2100 cb 5.7 v8 year 1996 - First time boat owner

Hi there
i am new boat owner first timer - and my first boat is a maxum 2100 cb 1996 5,7 v8 - 300 hours super weelkept - very nice boat for its age. We almost went for Mariah 18 ft - 2005 3,0 mercury, but fell in love with this old luxery cruiser at once, bigger stronger more power more luxury fell - but more thirsty lol - our gas prices here in Denmark is 2,5 dollar per liter !!

i noticed the speedometer didnt work and the rpm stops at 3000 - the engine sounds super and a mechanic said its top condition. The question is top speed - i measured it via gps 75 kmh or 46 miles per hours ( 3 adults + 50 liter gas ) - is that normal?

Is there any easy fix to rpm faults ?
And gas needle reader is also a bit difficult to read precisely - and how many liter is the tank, 200 l ?

Prob - we run the original 3 blade - is there a better more efficient, i see many going for 4 blades for faster plane and better economy and handling etc.- or stay with the original ?


Henrik Lund

Lund is offline   Reply With Quote
Old 07-04-2014, 01:36 PM   #2
mmwjr's Avatar
Join Date: Feb 2012
Location: Essex, Maryland
Posts: 8,207

Lund welcome aboard.

On the back of the tach there may be a setting for 4-6-8 cylinder, make sure it is on 8. At what speed does it first hit 3000 rpm?
46 mph sounds about right.

Regarding the speedo check that the hose (small black tube) on the front edge of the outdive is connected. This is the speedo pick up and uses air pressure to measure speed.

Boat fuel gauges should only be relyed on when at rest. The gas will move to theback of the tank when under way and tis is where he float is so a false reading happens. Also the gas sloshes around at rest in choppy water so the reading is so so. A safe way to go is 1/3 to get to destination, 1/3 back, and 1/3 as back up as things happen.
1997 2400 SCR
5.7 Vortec / Bravo 2
mmwjr is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Powered by vBadvanced CMPS v3.2.3

All times are GMT. The time now is 08:46 PM.

Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2020, vBulletin Solutions, Inc.