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Post by gtightline on Jul 8, 2014 6:08:54 GMT -6
I have a Yamaha 115 2 stroke on my 180cc...I am now running a 12 5/8 x 21 pitch prop..My RPMs wide open are at about 5800 RPMs with a top speed of 48 mph with two adults and a full tank of fuel,.....Question..What is the normal range as far as RPMs? Any help appreciated....Thanks all.
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Post by Simple Man on Jul 8, 2014 6:42:47 GMT -6
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Post by bubba on Jan 2, 2015 11:52:49 GMT -6
 My sv1900cc has a 2000 Yamaha 115 2-stroke. It turns about 5800 rpms with its 19-pitch Stiletto SS prop. Great performance! I can't imagine this boat with a 150. Comments from our local Yamaha service dealer are that the 115 can spin up to 6k with no problem. It's maybe the best mid-size motor Yamaha has ever made - powerful, flexible and economical. The weakness is its propensity to have carb / fuel pump issues with long-term use of oxygenated fuel. The tiny passages inside the carbs are very sensitive to any debris that may be created by the solvent action of ethanol. Good fuel filters are a must. However, a reasonably-competent DIYer can disassemble and clean the carbs with no problem. The fuel pump diaphragms are also attacked by the ethanol / MTBE and periodically will fail. Fortunately, the problem is easy to diagnose and the pump is inexpensive and easy to replace. |
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Post by gnrphil on Jan 2, 2015 14:27:00 GMT -6
Those numbers look good to me, sounds like Bubba is the Yamaha man notworthy
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Post by freezerfiller on Jan 3, 2015 0:13:55 GMT -6
I wouldn't touch it...
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Post by bubba on Jan 3, 2015 10:10:14 GMT -6
A wise man knows his limitations!
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