Topic: 300R vs 300ProXS actual hp | Bass Cat

300R vs 300ProXS actual hp

I don’t understand how Don can say there’s no reliable dyno difference, how are the CARB reports not reliable as manufacturers are certifying them for emission purposes which I would think carries a lot of weight? He requires everyone to post their serial # in a thread which I assume is because Mercury is wanting to track things or is there another reason he wants that info if he doesn’t get paid by Mercury to monitor the forum? It’s not rocket science that the engine with a higher rpm efficiency because of a different cam and shorter intake runner is going to make more power. If the 300R pushes the limits of the 10% rule then the 300ProXS can’t as well and the CARB report shows it makes 20hp less at a lower rpm. http://www.bbcboards.net/showthread.php?t=1055079

This topic has 16 replies, 6 voices, and was last updated 6 years ago by Wheelman.

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May 26, 2020 at 6:51 am #690147

Bass Cat Boats
Keymaster

Wheelman

your understanding is inaccurate as they are different in areas beyond the gearcase.

BCB

Wheelman:

Bass Cat Boats:

We don’t understand why they don’t build the 250R in the TorqueMaster case?

My understanding is there is no difference in the 250R and 250ProXS other than the mounts and gear case, if a boat can’t do 85+ with 275hp then the Pro XS is the way to go.

May 26, 2020 at 1:22 pm #690157

Wheelman
Participant

Bass Cat Boats:

Wheelman

your understanding is inaccurate as they are different in areas beyond the gearcase.

BCB

Wheelman:

Bass Cat Boats:

We don’t understand why they don’t build the 250R in the TorqueMaster case?

My understanding is there is no difference in the 250R and 250ProXS other than the mounts and gear case, if a boat can’t do 85+ with 275hp then the Pro XS is the way to go.

What else is different besides the mounts and gearcase? I couldn’t find anything else that differed comparing the two in the online parts catalog when they came out.
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