Viper Questions

How ya doing, my Viper is new to me, well about 2 years ago. I have been rebuilding her for that amount of time. I have a 1985 80 hp Merc and 4" set back with jacking capabilities. What is the proper set up? What prop, how high, water pressure reading? I am kinda new at this. Please help. No one around here can seem to tell me enough or the correct way. Thanks Jeff Carter



Keep the motor no much higher than an inch or so above the transom. Try a 22" Lazer II prop and you should see 50 mph or so. With the limited power you need, the motor deep and with the 2.33 to 1 gear ratio, the 22 should work good. Water pressure varies depending on where you get the reading. 10 psi or so is desirable. 




Please submit whatever questions you have to  All questions and answers selected will be displayed on this page as they come in.  Note: though all boaters are welcome, priority may be given to I.H.R. members.  Randy can not be held responsible for any advice given.  Though his information and expertise is second to none, he has no control over what you do with your boat.  It is up to you to boat safely and act responsibly, and his advice is only to be used as a guidance for your high performance boat/motor of which you are the one responsible for the risks involved.

Mark C.


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