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1989 20 HP Johnson power upgraded to 25 HP for zero dollars
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<blockquote data-quote="shawnfish" data-source="post: 327782" data-attributes="member: 4468"><p>ok so starting in 85 the 20 and 25 had identical carburetors but for some reason or another they used different part numbers on the carbs and its the restricted intake on the 20 that makes the difference and not carb size.. hmmmmm....... well that makes sense to me, logical sense? no. but I understand now why my 1980 25 carb is the same exact size as the 35 carb and both have different numbers with the only difference being the 25 has a plastic ring inside the throat narrowing it to restrict the air flow a bit and to make the same powerhead as the 35 only produce 25hp. well Stefan sorry I drug this out and johnny25 into it to help me understand how and why but my hats off to ya for using your melon and getting 5 more HP out of your motor without spending a dime or whatever you use up there for coin. and thanks a lot johnny25 for going out of your way once again and helping a fella out!!!!</p></blockquote><p></p>
[QUOTE="shawnfish, post: 327782, member: 4468"] ok so starting in 85 the 20 and 25 had identical carburetors but for some reason or another they used different part numbers on the carbs and its the restricted intake on the 20 that makes the difference and not carb size.. hmmmmm....... well that makes sense to me, logical sense? no. but I understand now why my 1980 25 carb is the same exact size as the 35 carb and both have different numbers with the only difference being the 25 has a plastic ring inside the throat narrowing it to restrict the air flow a bit and to make the same powerhead as the 35 only produce 25hp. well Stefan sorry I drug this out and johnny25 into it to help me understand how and why but my hats off to ya for using your melon and getting 5 more HP out of your motor without spending a dime or whatever you use up there for coin. and thanks a lot johnny25 for going out of your way once again and helping a fella out!!!! [/QUOTE]
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1989 20 HP Johnson power upgraded to 25 HP for zero dollars
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