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Best prop for 1976 Johnson 15 top end speed?
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<blockquote data-quote="Ghostman3" data-source="post: 313734" data-attributes="member: 11369"><p>I put on a carb from a 1977 15 hp. According to Leroy's Ramblings the only difference at the time was the carb. The tuned exhaust did not happen until latter. The plate on the motor which has the model and serial numbers state an RPM range of 4500-5500 for the 9.9. I would assume for a 15 it would be higher. After researching Leroy's, 15 hp should have a operating range of 5500 to 6500 rpms. The Evinrude website sells props with diameters between 7 and 11. If I'm at 10 and go down to an 8, it should increase my rpms to about 5500. Even if it goes to 6000 I should be ok. If it starts getting really out of wack then I'll worry. I do want to thank everybody for their input especially in having to go and test the outboard to find out what the current rpms are.</p></blockquote><p></p>
[QUOTE="Ghostman3, post: 313734, member: 11369"] I put on a carb from a 1977 15 hp. According to Leroy's Ramblings the only difference at the time was the carb. The tuned exhaust did not happen until latter. The plate on the motor which has the model and serial numbers state an RPM range of 4500-5500 for the 9.9. I would assume for a 15 it would be higher. After researching Leroy's, 15 hp should have a operating range of 5500 to 6500 rpms. The Evinrude website sells props with diameters between 7 and 11. If I'm at 10 and go down to an 8, it should increase my rpms to about 5500. Even if it goes to 6000 I should be ok. If it starts getting really out of wack then I'll worry. I do want to thank everybody for their input especially in having to go and test the outboard to find out what the current rpms are. [/QUOTE]
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Best prop for 1976 Johnson 15 top end speed?
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