23/f-300

[Terry England]

A friend of mine just set the same boat up this summer. Replaced an F-250 with an F-300. He says be careful, they are geared differently and that you will be over-propped with the 21". With the 17", he "spools up" to 5900 WOT, making 45 knots and cruses at 4,000 making 25 knots and attaining 2.3 MPG.

[SeaSick]

Thanks for the input guys. I was hoping to spin a 19 pitch 4 blade with cavitation plate at 1 1/2" or more up from bottom but may not be able to do that. 2.3 mpg is less than I was wishing for but is a lot better than the twin 150 carbed Mercs are giving me now. Hoping to finish this project and get back to my '73 20 foot SF that is undergoing a down to the stringers resto. I am going to hang a carbed 150 Evinrude on it and not even worry about the fuel because I don't think it will get used much after I get the Yami on the 23.
I have a great running pair of '99 150 Mercs for sale if anyone is interested.
Bill

[Old'sCool]

Originally Posted by Terry England

A friend of mine just set the same boat up this summer. Replaced an F-250 with an F-300. He says be careful, they are geared differently and that you will be over-propped with the 21". With the 17", he "spools up" to 5900 WOT, making 45 knots and cruses at 4,000 making 25 knots and attaining 2.3 MPG.

Transom mount or bracket?

[Terry England]

It is Transom Mount. Kieth is a diver so he probably runs around with another 700# +/- more than a rod and reel fisherman. It probably effects his top end.

We make a lot of long runs on the west coast of Florida (look at the Continental Shelf on google earth) and easily log 100 mile days, so we tend to cruise more than those in the Keys and West Palm who are in 600' of water and can see the condos. They can mash the throttles down until the hit fiberglass beause they're going to be there in 17 minutes or 10 gallons. We just can't make the numbers work with a two Gag grouper per person limit here!