What is the difference besides lower unit choice on the racing. Enrico
What is the difference besides lower unit choice on the racing. Enrico
This is a great question for the Mercury 3L High Performance Board.
The ProXS is based on technology and designs pioneered on the Racing XS line of engines.
In the case of the 250 Optimax (XS vs. ProXS), the powerheads are essentially identical.
The XS has a shorter warranty, but can be ordered with nearly any gearcase. In many cases, it sports stiffer mounts, some midsection/driveshaft housing differences, and a heavy-duty swivel bracket. It's also available with an "offshore" single-ram trim system (moving the pump into the boat).
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
So the only performance difference is the ecu?Powerheads are the same?
In the case of the 250 XS vs. 250 ProXS.... the powerheads (and PCM) are identical.
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
So the rev limiter is the same? What is the max rpm's on these motors?
Recommended Propping RPM is 5500-6000.
Maximum RPM is 6300.
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
Performance wise between these 2 motors what would be the benefit of one versous the other. I have a 21ft checkmate that the hull wieghs 1300 lbs.
As stated, the powerheads are basically identical. Propshaft horsepower is essentially the same.
The ProXS comes with a longer standard warranty- but only one gearcase available.
The Racing XS has a shorter warranty.... but you can choose "nearly any gearcase" in the lineup.
Unless you "reasonably expect" your hull to achieve 85+ MPH, I'd recommend the ProXS model.
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
Don: I like that word "essentially"
That aside I agree that unless your boat is capable of 85+ get the Pro XS, I'd get it with that new Verado style case and know you got the badest case w/o a cone out there
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by esdbass »</TD></TR><TR><TD CLASS="quote">Don: I like that word "essentially"
The powerheads are IDENTICAL. Used the word "essentially" simply due to the fact that there are slight "output" variances in ANY powerhead, from one to the next.
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
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