Mercruiser 3.7L & RPM

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Seaman Apprentice
Joined
Apr 17, 2008
Messages
48
Greetings!
I've got an 1989 Mercruiser 3.7L with Alpha-1 outdrive on a Wellcraft Classic 180 and 19pitch prop.

What is the max RPM I should run this engine? I noticed when "wide-open", I was pushing 4,800 to 5,000 rpm.

Any help??? Thanks!!!!
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Also any helpful advice on the following would be greatly appreciated!!!!
Boat has an ski rope eye/hook just above the outdrive, but after the my first run today I noticed while pulling a tube, the rope seemed to get caught under the wake a lot.

I want to install "something" that allows me to tie-off ski rope about 12" above top of boat (this will be about 20" above existing eye).
I don't want anytype of "tower" system or a large (4') tripod setup.

I found a ski tow hitch from overton's -- see attachment. Has anyone used/installed one of this. Does it work? Is rigid? Any helpful info?

I had invisioned sometype of small ~14" skipole & small tripod setup where to 2 brackes are shorter (~12"). Anyone every homemade anything like this? Any help would be grealty appreciated.

Thanks!!!
 

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