JuhaV Posted February 28, 2005 Share Posted February 28, 2005 Hi, Anyone have experience how high rpms a Sporti / V11 engine can tolerate before the valves start to communicate with the piston tops ? Where does the rpm limiter of a stock V11 cut out ? I know that there is not much to gain going beyond 8000 rpm, but I would like to know where the physical limit really sits. I have a My16M ECU unit where one can adjust the rpm limit freely and my engine seems to go rather willingly above 8000 rpm. I have taken it up to 8750 rpm without problems a couple of times, but it could go higher. Any experience on this ? br, JuhaV Link to comment Share on other sites More sharing options...
gthyni Posted February 28, 2005 Share Posted February 28, 2005 My revlimiter is at 9k, I have hit it a couple of times. You shouldn't go higher then that I think. The pistons speed is approaching what is consider the safety limit in a street bike engine. 8000 rpm = 21,33 m/s 9000 rpm = 24 m/s I read somewhere that 24 m/s should be consider the limit. calculus: 80 mm stroke * 2 (up/down) * 9000 rpm / 60 sek/minute = 24 m/s Link to comment Share on other sites More sharing options...
DeBenGuzzi Posted February 28, 2005 Share Posted February 28, 2005 so its not a big deal to hit the redline (8,000) from time to time? I was curious about that and might drive a little more aggresive knowning it to be safe. Link to comment Share on other sites More sharing options...
luhbo Posted March 1, 2005 Share Posted March 1, 2005 so its not a big deal to hit the redline (8,000) from time to time? I was curious about that and might drive a little more aggresive knowning it to be safe. 44732[/snapback] But keep in mind that shifting is easier at lower revs, so fiddling with the lever at that RPMS quickly leads to 9000+. The older LM3 stands it (at least prooven 3 times) but this engine is remarkable smaller. Hubert Link to comment Share on other sites More sharing options...
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