Quote:
Originally Posted by DoozleD
there is a guy on here with a purple 20 that I put a 115 e-tech on a few years ago, im going to have to talk to him...and bushwaker...I know all about the exhaust valve on the 115's, that's why I may be leaning toward a v-6
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I know a little about the 90's and the 115's. Evinrude added a grease fitting to the exhaust valve mechanism on the 115's to stop them from sticking in any one position. The 115's also had a problem with people leaving them in the tilted position and rain water getting in the Computer module wiring. They put a deflector shield for rain under the cowling and the grease fitting is serviced at the three year interval.
From my experiance, the 115's are more "pipey" than the E-tec 90's that seem to have a flatter torque curve. At 4,150 RPM's the 115's it feels like you hit the "solid fuel boosters" and the 90's seem to pull like John Deere across the entire power band. They seem to have much different port timing and of course the 115's have the adjustable expansion chamber.
The three cylinder E-tec 90 with the same displacement as a Harly Davidson, planes my stripped down 19 Bow Rider off with four divers and their assorted crap at 3200 and making 17 knots. At 5,300 it makes 30 knots with the same load. I get about 3.5 NPH with the 90. My 90 is an 2007.
I have a pair of the 115's on a 25' X 10' Bertram. It tips the scales at about 7,000#'s loaded. The 60 degree V-4, 115's get 7 miles per gallon to about 1500 RPM's, then that drops to just less than 2 miles per gallon up to about 4150 where it starts to get a little better than 2.4 miles per gallon through 4800 where it drops back to a little under 2 miles per gallon. At 4150 RPM's it makes 24 MPH and at 5400 it makes 36 MPH. Nobody can believe how fast that "Toad" is with a pair of 115's on it. They are set with the Cav plates low and I still "bust the 15" square, 3 bladed wheels loose" sometimes and have to slow down so they "catch" again.
The 115's don't like to run at less than 4,150, the 90's doesn't seem to care where you set the throttle.
We run at least 60 miles a day and most times 80 or 90 miles per day here on Florida's West Coast. Ask Conner, Don V or Kmoose. We got a big 'ol wide continental shelf where you have to run a hunderd miles out to get to 120' of water. On the Atlantic Coast you can see what color bathing suits the girls on the beach are wearing when you'er in 120' of water! Look at Google Earth and you'll see why we wear motors out over here in a few years and why with National Marine Fisheries - one size don't fit all.