What are the Actual Technical Differences in the New Merc 4 Stroke 300xs and 300R??? Both motors will have 1:75 gears with a Torque master gearcase.
What are the Actual Technical Differences in the New Merc 4 Stroke 300xs and 300R??? Both motors will have 1:75 gears with a Torque master gearcase.
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Phillip Arrington
Dover/Goodlettsville Tn
2017 Sponsoring Partners:
C&O Marine, Mercury Marine, Goodlettsville Gun Shop, Cantrell's Market, Motorguide , YETI, Carrot Stix, Yum, GateWay Tire Service Center, StormR, SpoolTek, RodSox, Jewel Bait Company, U.S. Bass, Bobs Machine Shop, Lazyman Hooks, FishBum, Bass Militia, Rayus, and Jenko Fishing.
1999 Triton TR-21PD
Mercury 300R
The 300XS was an OPTIMAX, Direct Injected, 3.2L Two-Stroke engine.
The 300R is a FOURSTROKE 4.6L Engine.
Though the gearcase looks similar, the 4-stroke TM Gearcase is a completely different gearcase.
There are also a number of separate models for each (26 unique model numbers for the 300R, currently).
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 47 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
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Phillip Arrington
Dover/Goodlettsville Tn
2017 Sponsoring Partners:
C&O Marine, Mercury Marine, Goodlettsville Gun Shop, Cantrell's Market, Motorguide , YETI, Carrot Stix, Yum, GateWay Tire Service Center, StormR, SpoolTek, RodSox, Jewel Bait Company, U.S. Bass, Bobs Machine Shop, Lazyman Hooks, FishBum, Bass Militia, Rayus, and Jenko Fishing.
1999 Triton TR-21PD
Mercury 300R
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Phillip Arrington
Dover/Goodlettsville Tn
2017 Sponsoring Partners:
C&O Marine, Mercury Marine, Goodlettsville Gun Shop, Cantrell's Market, Motorguide , YETI, Carrot Stix, Yum, GateWay Tire Service Center, StormR, SpoolTek, RodSox, Jewel Bait Company, U.S. Bass, Bobs Machine Shop, Lazyman Hooks, FishBum, Bass Militia, Rayus, and Jenko Fishing.
1999 Triton TR-21PD
Mercury 300R
300R has oil cooler and diff Intake. and super cool decals. turns more rpm
Nitro2023 triton allure 250 proxs
Garmin marine
prostaff
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Phillip Arrington
Dover/Goodlettsville Tn
2017 Sponsoring Partners:
C&O Marine, Mercury Marine, Goodlettsville Gun Shop, Cantrell's Market, Motorguide , YETI, Carrot Stix, Yum, GateWay Tire Service Center, StormR, SpoolTek, RodSox, Jewel Bait Company, U.S. Bass, Bobs Machine Shop, Lazyman Hooks, FishBum, Bass Militia, Rayus, and Jenko Fishing.
1999 Triton TR-21PD
Mercury 300R
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 47 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
if the topic is still 4.6 v8 400 proxs vs 4.6 v8 300r.
numerous articles refrence oil cooler and shorter intake runners when comparing 300r to 300 pro xs. As well as mercuryparts web lists oil cooler only on 300r. and diff part# on runners. so I assumed they were in fact different parts.
Nitro2023 triton allure 250 proxs
Garmin marine
prostaff
I guess what I'm getting at is which is it worth it to spend a few more thousand to go with the 300R over the 300 ProXS.... I mean Horsepower should be the same. I know the Racing engine will be more powerful, but really how much? Can you tell a NOTICABLE difference to justify the money?
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Phillip Arrington
Dover/Goodlettsville Tn
2017 Sponsoring Partners:
C&O Marine, Mercury Marine, Goodlettsville Gun Shop, Cantrell's Market, Motorguide , YETI, Carrot Stix, Yum, GateWay Tire Service Center, StormR, SpoolTek, RodSox, Jewel Bait Company, U.S. Bass, Bobs Machine Shop, Lazyman Hooks, FishBum, Bass Militia, Rayus, and Jenko Fishing.
1999 Triton TR-21PD
Mercury 300R
Based on the CARB numbers that were posted here, the 300 Pro XS is what 296? and the 300R was 316? If I remember correctly.
Last edited by Wave to Wave; 03-29-2019 at 10:00 AM.
cam too ?? i want one now.
Nitro2023 triton allure 250 proxs
Garmin marine
prostaff
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 47 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
300R is quite a bite more than the CARB numbers.
Fastbass Marine LLC
We specialize in NEW and USED ALLISON BOATS, Blazer Boats, Platinum Mercury Marine Repower Center, AquaTraction Flooring, and custom marine electronic installations on beautiful Kentucky and Barkley Lakes.
2022 Allison XB-21 BasSport Pro Elite
2022 Mercury 450R
2012 Bullet 21ss
2005 Mercury 300X
https://youtu.be/FOnAGNWOgZ0
Thanks guys :)
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Phillip Arrington
Dover/Goodlettsville Tn
2017 Sponsoring Partners:
C&O Marine, Mercury Marine, Goodlettsville Gun Shop, Cantrell's Market, Motorguide , YETI, Carrot Stix, Yum, GateWay Tire Service Center, StormR, SpoolTek, RodSox, Jewel Bait Company, U.S. Bass, Bobs Machine Shop, Lazyman Hooks, FishBum, Bass Militia, Rayus, and Jenko Fishing.
1999 Triton TR-21PD
Mercury 300R
The ProXS will have a bit more low end torque and the R will have a bit more top end HP. Also the 300R is available with a sportmaster in either 1.62 or 1.75. What are you looking to do?
Last edited by RSWORDS; 10-12-2019 at 07:26 AM.