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Discussion Starter #1
Hey everyone, just joined and recently got a fixer-upper Grizzly 660.
Does anybody have some good affordable mods that are cheap/free that might help make ride experience overall more enjoyable and maybe add a little performance?
Thanks
 

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2014 Yamaha Grizzly 700 EPS
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Welcome to GC.

You might want to look into CVT (clutch) mods as there is a lot of very good knowledge on here about that and those seem to get you your best bang for the buck.

Under the Grizzly forum section, there is Grizzly Talk. And within there is the FAQ that has some threads listed about CVT. Also look for post from @Ridgway81432 as he also owns a 660 and is one of our more knowledgable resident CVT gurus.
 

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Discussion Starter #4
Awesome! I will have to check those out. Keep that good stuff coming!
 

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Anyone else? I would prefere $50 and under but open to a little higher if you think it's a must have.
 

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Discussion Starter #6
Really like to have some more advice on some good performance mods. I am looking at getting a Uni filter but is there a better one to bump up the power more?
 

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Really like to have some more advice on some good performance mods. I am looking at getting a Uni filter but is there a better one to bump up the power more?
If the significant mods were all under $50, yamaha would have done them right off the bat. Performance for free essentially.

Have you done the shim mod yet? Seriously, you'll be surprised, and that's about the only one that can be done for under $50 that makes a significant difference.
 

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Have you done the shim mod yet? Seriously, you'll be surprised, and that's about the only one that can be done for under $50 that makes a significant difference.
You don't get much for 50$ anymore,
But like tythomps said, 1.5 or 2mm of shims, with an orange or purple EPI spring costs about that 50 bones.
 

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Discussion Starter #9
I will look into those shims. I didn't know which ones to get. With the spring I've heard there are problems with needing to do the weights as well. Is that true?
 

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I will look into those shims. I didn't know which ones to get. With the spring I've heard there are problems with needing to do the weights as well. Is that true?
Not necessarily.
Most do the shim and spring mod without issue.
In my case I found my engine reved a bit too much while cruising around so I switched from 16 to 18 gram weights. Switching or servicing your weights is easy. I was surprised how inexpensive yamaha weights were actually. My total investment between shims, spring and weights was about 120 $ US.
Not bad for the difference it made on my little 550.
 
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I will look into those shims. I didn't know which ones to get. With the spring I've heard there are problems with needing to do the weights as well. Is that true?
Do the shims first. Just search grizzly shim kit on eBay. It'll come with multiple thickness shims so you can fine tune it.

Then if you get belt slip or want even more aggressive backshift, get the stiffer secondary spring.

Weights come last. If you then find yourself on the rev limiter a lot, you'll need heavier weights. Or go heavier if you want it to up shift sooner. Or lighter if you still want more rev.
 

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Do the shims first. Just search grizzly shim kit on eBay. It'll come with multiple thickness shims so you can fine tune it.

Then if you get belt slip or want even more aggressive backshift, get the stiffer secondary spring.

Weights come last. If you then find yourself on the rev limiter a lot, you'll need heavier weights. Or go heavier if you want it to up shift sooner. Or lighter if you still want more rev.
X2.....
 

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Hey everyone, just joined and recently got a fixer-upper Grizzly 660.
Does anybody have some good affordable mods that are cheap/free that might help make ride experience overall more enjoyable and maybe add a little performance?
Thanks
Define "add a little performance".
What kind of riding do you like?
Top end, low end or across the entire spectrum?
 
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Discussion Starter #14
Hehe, guess I should've been more specific reogem. It is across the spectrum. Mostly plains ridding, none of that rocky stuff. I am looking for the bolt on stuff for the most part that will let me keep up with the neighbors 700 Grizz and a 700 Polaris I might do some trail riding with. At least when the Polaris isn't broke down...
 

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Discussion Starter #15
I am a gearhead though so I can handle myself if it is more than bolt on.
 

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NO Mud,Water or rock climbing..just speed..and cheap...OK
Tune up the carb, set the valves, install new spark plug.
Service the CVT but keep it stock.
Use only stock size and weight tires.
Remove front drive shaft this will get you better acceleration and 4-5mph more top end.
Get rid of any unnecessary weight.
 

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Saw you started another thread on this same topic....if all you care about is straight line speed, and you also want your mods to free and/or under $50, sorry but those are tools the Grizz 660 does not have in it's toolbox. Sell and buy a Raptor 660 or 700.

The grizz's excel in the tight technical stuff. You can keep up and surpass your buddies there. That kind of riding is 90% rider skill anyway, so work on those technical skills. But straight line stuff and not willing to spend big $$, do what reogem said in post 16 and that's about all you have going for you.
 

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Discussion Starter #18
Only water I deal with is snow. Lol! I'll set the valves and get a new spark plug. Just cleaned up the carb yesterday. Finally got it to stop running rich! Had the suspension on the softest adjustment went one click harder and maybe today get my winch hooked up. It is mounted but not wired... I can't find a poundage on it, it's a warn and says made specially for Yamaha. Anyone know if that was just one winch that was made or not? Also serviced the CVT yesterday greased it up. Stoped the squawking! Next on the list is recovering the seat! In case any of you are wondering why it needs so much work, it sat outside for a few years (wouldn't run) before I got it.
 

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Discussion Starter #19
Tythomps, straight line is good but not everything. I work with cows and check water. I might end up selling it eventually but I get my 45mph county road speed better than my old 400 Kawasaki Bayo. I don't want you guys think all I do is drag race it down a road. Lol. It's the plains out here though and so not many rocks or trees. My worry is going after the stray cow and maybe a trail ride or two. The 700 Grizz is going down a road though. Mostly want to make it quick not fast.
 
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