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swapping a long shaft for a short shaft johnson 30 hp

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Andrewdavis98

New member
Hi, I have 2 Johnson 30 hp motors, they are both the same year however one is a long shaft the other is a short shaft . the long shaft motor runs extremely well and has electric start, the short shaft motor is pull an is very unreliable. I have a 1968 boston whaler 13 with a 15 inch transom, I would like to swap the shafts. Can this be done and if so how hard is it.
 
Yes. The only difference is the long shaft parts are 5"" longer. Post a model # so we can look up your motor and maybe give you more info.
 
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The pull start motor has always been very unreliable it was overheated and was run without 2 stroke oil in it. The long shaft has never let me down. Which is more difficult swapping the power heads or the shafts.
 
Would a jack plate be a better solution or would I get better performance by swapping the shafts? What would be a good jackplate to use how much would it cost?
 
You have to pull the powerhead off in both cases !!--------------So remove the bad powerhead first as a trial.---------This is easier than you may think as well.
 
Does the long shaft motor have the added parts to it to make it a long shaft and not one straight exhaust housing until it gets to the gear case ??
 
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