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Jet Boats
General Jet Boat Discussions
jet unit swap
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<blockquote data-quote="blazer02" data-source="post: 364805" data-attributes="member: 15044"><p>Back in the earlier johnson 25 motors many had the small jet unit on them I believe they had like a 5 3/4 auger in them.I don't no how many years had them but i know they 83 and 84s had them.I have been told by a guy that races boats that these generally run better than a 5 7/8s unit like my 2002 model motor has.the reaaon being even though they move a lower volume of water that because of this the mantain a higher rpm and get to it faster and the 5 7/8s are trying to move to much and have a hard time making the peak rpm so the thrust isn't as hard.anyone else heard of this or have any thoughts on it.can one of these units bolt up or be modified to fit my 2002 25 horse.i have been told no by one shop wanted to sell me a motor not sure by another yes by a guy that does a lot of jet work on them.thoughts on this</p></blockquote><p></p>
[QUOTE="blazer02, post: 364805, member: 15044"] Back in the earlier johnson 25 motors many had the small jet unit on them I believe they had like a 5 3/4 auger in them.I don't no how many years had them but i know they 83 and 84s had them.I have been told by a guy that races boats that these generally run better than a 5 7/8s unit like my 2002 model motor has.the reaaon being even though they move a lower volume of water that because of this the mantain a higher rpm and get to it faster and the 5 7/8s are trying to move to much and have a hard time making the peak rpm so the thrust isn't as hard.anyone else heard of this or have any thoughts on it.can one of these units bolt up or be modified to fit my 2002 25 horse.i have been told no by one shop wanted to sell me a motor not sure by another yes by a guy that does a lot of jet work on them.thoughts on this [/QUOTE]
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jet unit swap
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