Stratos 201 Pro

Hello Randy, 

I have a 1989 Stratos 201 pro, the boat is in excellent condition so when the tired 200 Johnson got weak I elected to replace the engine instead of replacing the whole boat. I put a 99 model 2.5 mercury promax on it that I bought used with 97 hours on. I also have a hydraulic jack plate on it The engine came with a trophy 23 prop when I got it, they had it on a large bay type boat. I decided to try the prop to see how it performed, it had a great hole shot but only around 65 mph on gps. I know it should do more but really donít know what direction to start in. The engine is running about 6200 at 65mph. I would really appreciate any help you can give me.

Thanks, James Wright

 

James, 

I have a friend with a boat like yours and it runs about 73-75mph. Put the propshaft centerline at about 2" below the pad at zero trim. If the trophy still won't run the boat harder then try a new prop of 23-25 in. pitch. The boat we have here runs a 3 blade 25 Yamaha pro series so a lazer 2 or something similar would work for you. If the boat still won't go then lower the motor about an inch. I'd say that it can't pick the boat up and needs more lever-arm. See if this stuff gets you to the mid 70's. 

Randy

 

 

Please submit whatever questions you have to IHRTechTalk@yahoo.com.  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.

Thanks,
Mark C.

 

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