How many hours do you have on your 300R and have you had any issues with it? From what I’ve found on the net they are pretty much trouble free. I’ve talked to one guy with 500 hours on his and not trouble what so ever.
How many hours do you have on your 300R and have you had any issues with it? From what I’ve found on the net they are pretty much trouble free. I’ve talked to one guy with 500 hours on his and not trouble what so ever.
Allison XB21 2+2 with Mercury 300R
Only about 30 but it's been great
24’Bass Cat Puma Sts-300 Proxs
23’Gatortrax Gt tunnel hull-200 Suzuki
Only 82 now fixing to start the 3rd season. Did my maintenance last weekend.
Haven't seen much for problems here.
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
I put 230 on mine in under 2 years and you know how hard I pushed mine for Fastbass Marine. No issues. Just a flat out awesome motor. We have 3 in our group and they all get pushed hard for Allison testing. No issues on any of them.Originally Posted by Dark Allison
Allison XB21 2+2
Mercury 300R
Even though I have a 250 pro xs I love hearing these results. My first one I didn't have such great luck with. It was replaced under warranty. So far my new one has been great. It only has a little over 8 hrs on it. Stupid winter.
Thanks for the replies. I bit the bullet and bought one.
Allison XB21 2+2 with Mercury 300R
Yep you did and a good one it was. That motor put down some wicked 5-90mph times when I first tested it. Time to put it to good use.
Allison XB21 2+2
Mercury 300R
Does anybody know the actual HP difference in the 300R vs Pro XS 300? From what I can tell the 300R is the way to go this will be for my Ranger Z522.
04 521VX 250 Pro XS
14 521C 250 Pro XS
I don't know the actual HP difference but the extra RPM makes a big difference on a high performance hull.
There is nothing that has been released that I would consider "realistic" data for this purpose. The "R" definitely has advantages (just keep in mind that if you want a Product Protection Plan, they are CONSIDERABLY more expensive on the Race Models).
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
Ya like half the price of the engine!
2020 Allison XB 21
Merc 300R
2018-SST Bullet
Merc 300R
Bullet 20XD
300XS DBR
300 XS = 306 hp
300 R = 328 hp
This info came from the post "Good article about R motors"
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