Also, what is a good WOT rpm to try to reach when tuning props? Is the 250 limiter different than the 225 limiter? Thanks for your help.
Also, what is a good WOT rpm to try to reach when tuning props? Is the 250 limiter different than the 225 limiter? Thanks for your help.
250 ProXS limiter is set at "6300" RPM's. Keep in mind- the limiter is not a "set figure"... it is actually a "window" of approximately 300 RPM's. Actual RPM where the limiter "activates" will vary based on load, and various other items.
Recommended propping RPM is 5500-6000.
Peak horsepower (optimum propping RPM for top speed) is usually found between 5800-5900 RPM's.
On the 225 Question- would need a specific serial number and the numbers off of the PCM to answer the question.
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 48 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
Thanks for your help. On another note, I saw that my buddy's new 09 250 pro xs seemed have different graphics than my Nov 08 Pro xs 250. Did something change in the new 09 production year?
We don't use "years" any longer.... don't yet have the serial number break, but I can see that there has been a change.
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 48 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
my 2008 250 pro xs goes into gaurdian at 6280 rpm..prop it to turn 5900-6000 rpm
Reply With Quote