660 vs. 700 - Yamaha Grizzly ATV Forum
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post #1 of 7 Old 01-20-2010, 10:49 AM Thread Starter
 
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660 vs. 700

interested to know how much of a difference between the two really is. i know the fuel injection and power steering is a plus and why im considering one. i want to know though performance wise is the 700 got alot more grunt than the 660? i would assume the 700 would win a drag race but how close would it be? seems like both run bout the same on topend. also what about 700 verse brute force 750?

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post #2 of 7 Old 01-20-2010, 11:06 AM
 
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I never actually raced a 700, but anytime i drove beside one he did have a edge. Not too much, but yeah more power.

750 brute on the other hand... The power is unlike any atv i have driven before. My 660 being left in the dust is a under statement, the brute 750 hauled a$$.
But on the other hand, it rode like a sack of potatoes. Suspention reacted ALL wrong. It would dive into bumps, was scary to control.

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post #3 of 7 Old 01-20-2010, 11:12 AM
 
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The power of the 750 BF is sweet but all that power does nothing for you when your tranny is broke all the time. The BF 750 are also know for spinning the lower end bearing's in the engine as well.

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post #4 of 7 Old 01-20-2010, 11:43 AM
 
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Remember there is only 26cc's seperating the 2 engines. I have watched drag races on Youtube and the 700 is only ahead by a bike length when they reach top speed...hardly and differance. My 660 has more than exceeded my expectations for an ATV. And about the 750 BF, they're a powerhouse but are not as reliable and they are gas guzzlers too. IMO the Grizzly (660 or 700) is the best all around ATV on the planet.

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post #5 of 7 Old 01-20-2010, 12:01 PM
 
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IMHO I would take EFI over a Carb anyday. When it comes to throttle response the ONLY advantage of Carb is they are arguably more affective for higher amounts of fuel for building higher HP at higher RPM's. When you look at sand drags tho the Raptor 700 with EFI is king of the four strokes. And as said when it comes to altitude and slow rock crawling you will never beat a EFI unit!

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post #6 of 7 Old 01-20-2010, 12:11 PM
 
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The 700 just has little improvements all over the place, when you buy a 700 your jsut not getting a better motor, you get wide arm a-arms, ps, FI, slightly better suspension, better ducts for air and belt, etc. It just a bit more refined all over.
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post #7 of 7 Old 01-20-2010, 12:55 PM
 
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I just bought a Grizzly 660. 2004 model. Had a 11 to 1 686 kit and a intake kit but no exhaust kit. Seemed a little weird to put in a kit and then, don't open the exhaust, but whatever. Guy had bought a new 700. I got to drive and run both.

the 660 with kit had more bottom end. Jumped off the line much stronger. It's also more Lopey. like a Lopey cam. And you can walk it easier. Little throttle and it would slowly pull hard.

The 700 felt linear. As in, no lopey feel. Lot smoother power delivery. It was also faster by 3mph. On slow speeds in the woods, hit a little gas you got a lot. It won't walk as well. And, I mean idle walking. Not 5 to 10 mph. There, not really a difference other then the 700 felt smoother.

On the power steering. It was a wash. For me, Either was fine. For the guy who owned it. He wasn't liking it. Just looked like something more to break and it wasn't really needed with stock size tires.

Tested it in Missouri, Up and down large ravines. That I would have imagined would help the 700 with FI. But, For slow stuff I definately prefer the 660 with carb. I love the jump off the line.



The guy didn't want to sell the 660. But, just wanted newer with warranty.

I was adjusting some things and put it back together and it pinned the throtle wide open. Hit start and stood right up screaming and I shut it down. Talk about an eye opener. LOL

I'm looking at a stroker kit and the 105 bore size with a ported head. I want the power, not really worried about the speed.
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