300R vs 300X

**Greg G** · 04-05-2019, 08:46 AM

Even though props stink, I guess it is becoming harder to argue with 87 Octane, 5 years of warranty, and 561 lbs.

**PRE-Z06** · 04-05-2019, 03:52 PM

Originally Posted by JPEROG

They will never run that much better then an X or an XS without having them propped correctly and the engine height being up to get the bigger case to surface. These new gear cases are .600 bigger in dia. so you need to go at least that much bigger in prop dia. to compensate then they also take advantage of being able to turn a 5 blade for hook up and efficiency on top of that.

There is no sense in commenting about them unless you have experienced it. Both Randy and I were anti four stroke and never had an appreciation for a 400R in a single application. -I didn't think they were ever going to come out with anything better then an X again "I was wrong".

These motors are also set up in a totally "de-tuned" form so that they can run on swamp fuel-There should be very little warranty claims in this form. Give it a little time and see what happens when someone puts some compression, cams, and head work into the picture. It will be the ultimate outboard under 550 lbs. and will make the best river rat motor ever.

Joe

Agreed they sound great, are very durable and have potential just wish they didn’t weigh so much, it’s like the new Corvette’s getting heavier unfortunately.

**Turborr** · 04-05-2019, 09:58 PM

I understand that the new technology is the real deal...but the question that hasn't been answered yet is if you put the same 5k prop on a x or an xs...what is the difference in performance? I realize that the gearcase limits the performance on the r unless you use a specific prop....but if you spend the same amount of money on a prop on the x or the xs....is it close in performance?

**Whaaaaat** · 04-05-2019, 10:54 PM

Originally Posted by Turborr

I understand that the new technology is the real deal...but the question that hasn't been answered yet is if you put the same 5k prop on a x or an xs...what is the difference in performance? I realize that the gearcase limits the performance on the r unless you use a specific prop....but if you spend the same amount of money on a prop on the x or the xs....is it close in performance?

Stop asking questions like that. Here just calm down now and have some koolaid.

**wicheckmate** · 04-06-2019, 08:50 AM

If you put a newer 4-5 thousand dollar large cleaver on an X or XS would top speed be similar??? Possibly, but it would have to have the torque to get their first and i would think low and mid-range would suck horribly compared to the new 300r. This is the new platform, even the Verado is now going to be limited with its time.

**Greg G** · 04-06-2019, 08:57 AM

I highly doubt you will ever see someone test a 300R with the big CNC prop and then test a 300XS with the exact same prop in a smaller size.

**Z06man** · 04-06-2019, 11:30 AM

I will try 1 on my Twister next week with 300x . Will have results with Twister with 300R soon after .

**JPEROG** · 04-06-2019, 02:58 PM

The X struggles to get to rpm with the big 5 blade. It bites a good bit more then the 4 blade DeWalds that I usually run-

Joe

**Double Rigged** · 04-06-2019, 03:59 PM

Personally unit the 300r has a 1.62 gear or unless someone has a 300x with a 1.75 you cannot get a fair comparison. I can tell you i spin a large 15” 5 blade Dewald however it is a 30p and 1.62. It will turn 7000rpm and have no trouble spinning it up!
JMO

**JPEROG** · 04-06-2019, 05:46 PM

Originally Posted by Double Rigged

Personally unit the 300r has a 1.62 gear or unless someone has a 300x with a 1.75 you cannot get a fair comparison. I can tell you i spin a large 15” 5 blade Dewald however it is a 30p and 1.62. It will turn 7000rpm and have no trouble spinning it up!
JMO

We are talking about a merc cnc 5 blade 15.25 34P.

Joe

**Double Rigged** · 04-07-2019, 06:14 AM

Originally Posted by JPEROG

We are talking about a merc cnc 5 blade 15.25 34P.

Joe

I get that. Motors would need the same gear ratio. Kind of like saying can a 300r turn that prop with a 1.62. I think everyone understands you cannot beat cubic inch but it is really a dumb comparison. Motors power/torque curves are too different. Each requires a different set up. No doubt the motors are nice have potential in the future but in the end HP is HP. Just need to put it to the water! I am looking forward the next step for that engine and that is when things will get interesting. However you need a small fortune to buy them.