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Could I use a mid 80s 25hp lower unit on a 74 Evinrude 35hp?

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  • Could I use a mid 80s 25hp lower unit on a 74 Evinrude 35hp?

    I have two motors that I picked up for parts. One is an 84 25hp and the other is a 74 35hp.

    The 35 has the old school round water intakes and the 25 has the square plastic screens. The lower on the 35 froze and not only split the case(Fixable) but it shoved the bearing carrier so hard it sheared off the groove for the oring that keeps the gears in place.

    The 25hp gear case looks like it will bolt up fine with the only difference being the shift rod configuration.

    So my question is can I make a frankenmotor by combining the 35hp powerhead and mid section with the 25hp lower unit?

  • #2
    Lets get the facts first.------What model # is on this 1974 model 35 HP Evinrude.

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    • #3
      Ok, new development.

      Model # is : 35603s ......74 35hp

      But I found a different lower that is PN 324095

      Which is a much closer match. Would that work on this motor.

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      • #4
        Why would you say it is a 1974 model ?----It is a 1976 !

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        • #5
          Originally posted by racerone View Post
          Why would you say it is a 1974 model ?----It is a 1976 !
          So you found that much out but didnt/cant/wont tell me if they will match?

          Curious.

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          • #6
            Bring the parts over with a small box of suds.----I could tell you in an instant if it will fit !!----Sorry I am not going to be the interchange manual for you.

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            • #7
              This is pathetic.

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              • #8
                Sorry----I can not see your parts or your issue.

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                • #9
                  Originally posted by RaisedByWolves View Post
                  Ok, new development.

                  Model # is : 35603s ......74 35hp

                  But I found a different lower that is PN 324095

                  Which is a much closer match. Would that work on this motor.
                  So you do not know the year of your motor....you are asking whether a substitution from the different HP and 10+ year model difference will work....but you somehow know that this latest find, a 324095 is a closer match without explaining why we should accept that you even have the right part number?
                  You are right, "this is pathetic".
                  You know that you are a very poor driver when Siri says : "In 1/4 mile pull over and let me out...."

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                  • #10
                    Sign up today
                    Quote ‘This is pathetic’
                    Hint: Not an effective strategy for soliciting advice..
                    author unknown: It's almost beyond the point of bearable how torturous it is to try to have any dignity in being a Vikings fan..

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