Here is the difference in hp between 800 and 800r.

800R has;
Different (ECM and Gauge programming).
Different Cams
Different Injectors
Different intake
different bottom half of the air box.
Different air filter
Different fuel tank and fuel pump.

From what I read a lot of the power gained is from the intake and ecm.


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Super informative. Thanks a lot for sharing.

Would be cool to see a brand comparo of the advertised HP per CC .

I also did Polaris and CFMoto. I knew someone is going to suggest that. I'll share the figures here soon.

 

Would be cool to see a brand comparo of the advertised HP per CC .

 

Polaris

Engine	Displacement	Horsepower	HP/Displacement
450	499	33	0.0661
570	567	44	0.0776
850	850	78	0.0918
1000	952	90	0.0945

The HP/displacement for Polaris' 450 and 570 is just laughable compared to the rotax offerings. However, the 850 and 1000 are very competitive.

CFMoto

Engine	Displacement	Horsepower	HP/Displacement
400	398	31	0.0779
500	495	38	0.0768
600	580	40	0.0690
800	800	62	0.0775
1000	963	79	0.0820

With CFMoto, you realize how more superior the rotax and polaris engines are. Basically, the 800 cfmoto is equivalent to the 650 rotax and the 1000 cfmoto is equivalent to the 850 rotax.

Good stuff, @xsever
You didn't come across anything on the ole fo-hunnit's, did you? Carb or EFI, just curious

The EFI version is 32 HP. The carb version is 29 HP.

 

Good stuff, @xsever

You didn't come across anything on the ole fo-hunnit's, did you? Carb or EFI, just curious

 

For some reason 28 hp seems to stick in my brain after all these years .

 

My opinion on all of this is more power is more fun. We really need about 150hp in an ATV. This under 100hp stuff is ok but could be way better...

 

lol

And I was over here thinking I'd driven 4cyl cars that didn't have those numbers, those Rotax' don't play around

Well, you know what you need to do :

 

And to think about it. My XMR 1000r is 91hp. With a tune and aftermarket can, it will do 101hp.

 

I put stickers on my XMR 1000 and cut off the exhaust altogether to get the best "flow" it now has 125hp. So badass

 

My Sticker Mod only got me 3hp.....go figure

 

my 2021 maverick sport max 1000r is rated for 100hp or 101hp from the factory

 

Yeah, I'm aware. There's also a 172 HP version in the X3 as well. I only covered the engines in the Outlander models.

 

Nice graph!
A hp to weight ratio of each machine would tell the real tale of the tape.....

 

Nice graph!
A hp to weight ratio of each machine would tell the real tale of the tape.....

Doable but lots of variants involved that affect weight: 1-seater, 2-seater, XT, XTP, etc.... the accessories for each trim level affect weight.
If you supply the weights you're interested in, I'll add them to the Excel sheet I have going on and report on results.

Not to throw this off topic but there is a 195 hp version also. SxS blog has an x3 that is pushing 500 hp out of a 1 liter engine. That is dang impressive.

Oh yes yes I remember seeing the 195 HP version as well. 500?!! What are they using besides turbos? New cams and pistons?

 

I find it interesting comparing the bore and stroke on the 650, 850, and 1000R.

The 850 is essentially a bored out 650 with different cam timing. It actually has a bigger bore than the 1000.

 

It's interesting the manufacturers only post horsepower and not torque.

I imagine the Yamaha single 700 has decent torque but Yamaha doesn't post numbers either.

Does anyone know where to get torque numbers and torque curves for ATV's?

Thanks for posting the tables above, very interesting.

The compression ratios vary slightly but the max HP RPM significantly:

650 - 8000
850 - 7000
1000 - 7250

With the 850 reaching max horsepower lower, seems to suggest a more linear curve with initial power and torque coming on stronger consistent with a larger bore? (Or am I incorrect about this?)

Lastly, what about gear ratios? Are they the same for all G2 chassis?

 

It's interesting the manufacturers only post horsepower and not torque.
I imagine the Yamaha single 700 has decent torque but Yamaha doesn't post numbers either.
Does anyone know where to get torque numbers and torque curves for ATV's?

I noticed that ever since I started shopping for an ATV. Horsepower figures are everywhere, but no mention of torque whereas you'd think the latter is more important than the former in an ATV. I couldn't find any go-to source for torque figures.
The Yamaha (700) 686 engine has 45.6 HP so HP/Displacement = 0.0664.

 

at 7250rpm the 91hp 1000r produces 65.9 lb/tq. HMF has some nice dyno sheets on their website to see the torque curves.

 

The Rotax in the 500 Buck - is that the line under or over 500? Either way I had no idea it had that output. In 17 years I've never needed all the power it can give. I'm glad I didn't spend the money for the 650. It just isn't needed for my purposes.

 

Is it possible you have the 650 and 800 swapped? How does an 800 have 11 hp less than a 650, I have one of each and the 800 is a lot more powerful for sure.

 

I don't know about the accuracy of the table but the first 800 Outlander was I think in 2004?

The 800 power plant has likely evolved in power and other ways in the last 17 years.

 

I assume these are advertised figures from the manufacturers ?

Brings me back to the late 90's motorcycle power numbers, enjoy what you have now the machines will be making double that in 10-20 years if petrol is still around. Just to add a few observations from the other powersports side of things.

A good carb will usually make the same power as efi but we are not talking stock carbs.
with a shaft drive expect about a 20% power loss through the drive train as it loses power every time it changes direction. Belts and chains should be closer to 10% loss. No idea on a 4x4 or cvt losses.

Some engines will be made the same displacement but will not be made with power in mind as the goal is more about reliability or low maintenance. looking at my lowly traxter 500 it is practically a fancy air compressor motor. I have looked at some of the later designs and you can see when the desire for power came in as they started using designs that were not developed during the great war.

Given the uses for each motor may be different and the owners plans for them as well I see a great push for simple machines and another for the flagship higher HP toys. The power wars will be hotting up if emissions does not kill them expect more fragile motors with more service needs as well as the usual cost upgrades coming soon but you will have more power than you can handle.

Which of course means with the high HP machines expect the nanny controls to come soon with traction control abs and probably anti tip software as well. you will be able to drop a new driver/rider in a 200 hp buggy and trust they will not kill themselves without really trying hard.

Some of us who have played with the hp are now returning to more simple machines where you can use all of what you have for fun and yes that means we are old . ...lol

enjoy the power wars!

 

Some engines will be made the same displacement but will not be made with power in mind as the goal is more about reliability or low maintenance.

I have an engine in a mower with the same displacement as the 1000 Rotax.....its rated at 35HP.

 

Imagine the amount of grass you could cut if your mower had the Rotax engine in it.

 

I just got more stickers for my machine and now it makes 175hp at the wheels. Man I am awesome. I am 1 up MAN!!

 

Hello hello,

I was doing a bit of research last week into the rotax engines and I put together the following table so I thought I'd share it with you.

Engine	Displacement	Horsepower (HP)	HP/Displacement	Weight
330	?	?	?
400	400
400 EFI	400	32	0.0800

Looking forward to hear your opinion on all of this. From an engineering and innovation perspective, it's super cool to see how can-am/rotax are squeezing every bit of HP from the displacement. Cheers

Nice work. But you left off my 330! And I don't have any idea what the specs are.

Does the weight of the engines differ significantly? Correlate to HP?

2004 Bombardier 330

 

I haven't been able to find HP numbers for the 330, it seems they listed torque back then at 18.3 lbs. ft.

The 2004 - 07 Outlander 800 weighed 639 lbs. dry.

The 2021 Outlander 850 weighs 800 lbs. dry.

 

LOL, I sure could pull a heck of a wheelie 😎

Not so sure the mower (or I) could handle it....
As it is now with a max cutting speed of 12mph is way too fast for the ground I mow.