Modified Yamaha Grizzly 700. Hotcam, ported head, Coops clutch 8000 RPM Run
Вставка
- Опубліковано 16 січ 2021
- On this episode of KC ATV, I install Hot Cam and also port the cylinder head
on the Grizzly. I take the Grizz for a test ride and see how it performs?
As always folks thanks for watching!! - Авто та транспорт
Wicked!! It comes alive quick. Tree!!!! Drift!!! Jump!!! Love it.
It runs pretty good for a Japanese machine., Thanks for checking out the video buddy!!
Tree Hmmm??? Drift around it, jump it or aaahh BAIL BAIL BAIL!!! I’ve tried all 3 and none seemed to work well for me. Oh I didn’t crash in them every time. I think I may have made it a couple times **🥴**
Love watching you guys. You were a big part of influencing us to start a channel to document our family rides!
That’s great, we appreciate you checking out the videos!
@@kcatv9556 would be thrilled if you could follow us back on UA-cam! Thanks for the great content.
Well done buddy. Your first run was awesome and not a bad top speed of 74mph, plus the speed gain was quick! You'll love the extra performance on trail no doubt.
It’s always fun having a little more power.
Plus I enjoy modifying stuff so this keeps me interested. Thanks for checking out the video my friend!!
That’s awesome!! That’s flat out moving!!!
I’m liking it! Thanks for checking out the video!
I Love my Coop 45 cluch mod. Nice work on your head! Truly enjoy your video’s.
Yeah for sure the clutch mod really helps the low end!.,
Thanks for checking out the video!
Thanks Rick😂
Great video! That's a nice R&D facility you have right there. She sounds awesome! I really like the shop also. Ride on good buddy.
Hey buddy! Thank you appreciate your stopping by and checking out the video!
Another great video! I've built a lot of 450 motors and always said I would never do my grizzly motor. Now you got me second guessing myself. Lol
Yeah I hear ya, I’m actually impressed with the way it runs! Thanks for checking out the video!
Great Video, just gave me inspiration to go out to the garage!
Right on that’s great! Going out in the shop keeps me out of trouble LOL.
Thanks for checking out the video!
You have a beautiful property!!!
Thank you, thanks for checking out the video.
I want a grizzly so bad. .thank you for the video. You have a new subscriber here.
Right on MrSprintcat appreciate a new subscriber and checking out the video!
Looking into replacing my cam. Well done video, very informative. You always have good content, enjoy your channel Thanks.
Hi Esva, Glad you like the videos. Hope it helps you out.
Thanks you watching!
Wow look like a big job nicely done .
Thanks Norm big job but fun to me. I appreciate you stopping by and checking out the video!
Wow! That’s awesome....well done I have a stock 17 Grizzly SE dynamite as is but this makes me want to fiddle with it👍
Haha I know what you mean I was bored with it. I like to modify stuff so it was fun working on it. Thanks for checking out the video!
was thinking of getting a grizzly 700 and porting heads and putting a cam and getting it tuned helped a lot thanks!
You’re welcome thanks for watching!
Great video and I had my 800 Commander up to 74mph before I had it lifted and clutched to run up to 34” tall tires now it runs about 46 with 32” tires
Stacy Reid..Yeah the top speed really doesn’t mean anything. It’s all about the power you have in the lower end which makes it funner to ride. Thanks for checking out the video Stacy!
Great video. Watch out for the tree's😜. The Grizzly is a awesome ATV. My friend has a Kawasaki brute force 750. It's a nice ATV but I prefer my Grizzly 700. I like your channel so I subscribed. Cheers!!
Yep I agree that Kawasaki brute force is a nice machine but I prefer the grizzly.
Thanks for checking out the video and appreciate you subscribing!
Absolutely love all your videos. Every morning before work and when I get home I check for new ones you Have posed. I’m planning on getting a grizzly spring/summer and can’t wait. If You had to do it all over would you buy another grizzly? How has the reliability been? What would you recommend for upgrades to the grizzly when I get one?
Hi Tom Yes I would buy another grizzly for sure!
The reliability has been great. One Thing I would recommend is getting one with the 686 engine. Not that the 708 engine isn’t reliable or anything but there’s very little aftermarket parts available for it.
The first mods I would recommend is a programmer and a pipe. Those two items will pick it up pretty good make it more responsive. Hope that helps you out and good luck when you get your Grizz!
Thanks for checking out the video!
Great video walking through the process! Any interest in a high compression piston? I just put one in my old Big Bear 350 and it made a good improvement.
Yes I would like to put a high compression piston in at some point. I wouldn’t want to do that with the stock Rod.
So that’s going to be quite a process removing the engine and sending the crank out to have a new rod installed.
Thanks for checking out the video!
Great video! Love this stuff
Question what ever happened to the old piece of farm equipment you dug out of the woods?
Thanks Craig, glad you enjoy the videos! I Haven’t done anything with the old farm equipment yet..
Dang !! 74 . Reminds me of my Yamaha YFZ 450 , we topped it out at 87 . But it prob was half the weight of the grizzly. And we could of been wrong on speed , we had me on it with buddy next to me in truck on country road . Not smartest thing to do lol 😂 my younger days when I was dumb haha. Look forward to next video
I’m not young anymore so I guess I shouldn’t be doing that! LOL. Thanks for checking out the video my friend!!
@@kcatv9556 we are alway young at heart ❤️ see ya next time 😉
4:56 boy I just put together my head with kibble white valves, seals for my stroked out big bore 465 400ex and It was a fight getting my keeper in I bet you have a hell of a time at such a wired angle on these machines.
Yes indeed putting the valves back in those cylinder heads there’s not much room getting the valve spring retainer keepers back on for sure.
Glad to hear other folks are working on their own machines as well. Thanks for checking out the video!
Great video, about to pull apart my head for leaking valve seals and do big bore kit on my 07 (was burning oil) , what did you do to port and clean the insides of the head? Thanks in advance
I used a porting kit that I had. Go to speedwaymotors.com and look for cylinder head porting kit.
you can pick one up there. You will also need a die grinder as well. Good luck with your project hope everything turns out good.
Hope that helps you out thanks for checking out the video!
Hi, Great educational mod videos on your site for the grizzly and Kodiak. I am in the market for a new atv and I have narrowed my choice to the Grizzly or kodiak. Which one do you prefer and why? I know they have the same engine but there are some clutch, suspension differences. Thanks in advance. Also, whats your opinion of the outlander 650/ 850 and the kingquad 750? These are other atvs I am considering. I dont have the option to test drive them where I live, unfortunately.
Hey Duane I prefer the grizzly
it’s a little more sporty to ride due to the clutching has a lower ratio and the suspension has just a little bit more travel as well.
But that doesn’t take anything away from the Kodiak I do like it as well it’s just not as sporty riding, that’s just my opinion. To give you advice on what to buy man that’s a tough one!..
It really depends on the type of riding you want to do?
My advice is to check out
dirt ObseXXion channel he has a few videos that might help you determine which quad would be the best for you.
Leave a comment on one of their videos tell them I sent you if you don’t mind. LOL
Hope that helps you out thanks for checking out the video very much appreciated!!!
Thanks! I’ll check with them also!! I am a fan of the grizzly as well . I had a 2016 but traded it on an outlander max so i could take my wife. Sold it recently . Im planning to get a sxs for when we both go. And a quad for me. Grizzly, king quad or outlander is my dilemma. Leaning towards grizzly . Thanks again
I got another question for you. Do you know if this Koso EFI Multimeter (Tack, Temp, Volt, AFR) is waterproof or water resistance?? The one video you had a baggy over it and a little while later you were riding in the rain with nothing over it. I didn't find anything in the instructions. I like it and its easy to see just not sure what to do if I get caught in a rainstorm?? Thanks Buddy.
If I remember right I read somewhere that it is waterproof since it’s designed for motorcycles.
I hope it’s waterproof I hose mine down all the time when I’m washing the machine.
@@kcatv9556 I hope?? LOL. Ok good enough. I guess we will find out. Thanks Buddy.
Nice 👍
Thank you!!
wish i could just bring my grizz to you to work on lol.
Thanks for checking out the video!
With all the performance upgrades you have done, have you done any suspension upgrades or mods? I am seeing lots of folks disconnecting the sway bars on their ATV's, any thoughts or concerns to doing this? Thank you for your posts. We enjoy your fascination with mud puddles and the water, we live in the Mountains in Northern Arizona but don't have the trail systems like you have in your area. m&c roadscapes
The suspension mods I’ve done is the Elka stage 3 sharks on both of our machines. As far as the sway bar, I think folks remove it to try and make their quad ride better? With Elka shocks no need to remove the sway bar.
I’m definitely not planning on
Removing it..
thanks for checking out the video and commenting greatly appreciated!!
@@kcatv9556 Thanks for the information, i was concerned about the stability on flat roads if it was removed. My wife gets concerned when she only has three tires on the ground and lots of folks say to remove the sway bar to allow more travel. More flexible shocks might be the safer bet.
@@mcroadscapes7107 Yes stability on flat and off camber roads and trails would suffer if the sway bar is removed. The quad would have more tilt, myself I wouldn’t like that.
The only situation I would say for removing the sway bar would be for rock crawling then it might be a benefit.
Now if we’re talking about Can-am, there newer machines have a front sway bar. I would say yes remove it..
Let the front wheels move independently of each other.
Are those shocks softer or stiffer than the stock ones? I'm looking for super soft shocks for my 2020 Grizzly 700
Hi Rich, the shocks themselves are much softer than the factory shocks.
When you order them from Elka you tell them what type of riding you will be doing and they will build them to suit you.
As far as the springs same thing you give them your weight and what you will be carrying and they install what they think will work best.
Hope that helps you out thanks for checking out the video.
am i crazy or did he put the valves in backwards?
👌👌👌
Thanks my friend!!! 👍
I need some guidance with tuning my 08 grizzly with big bore kit.
Hi Danny most likely you will need to add more fuel since you put a big bore kit in the machine.
For actual Tuning need to find somebody local to you to do that type stuff.
Hope that helps you out thanks for checking out the video.
Awesome video buddy! Loved it! I have lots of questions as usual (always wanting to learn):
As I don't know a ton about mechanics, I'm assuming the new cam has bigger lobes to allow more intake and exhaust on compression, which translates to more HP right? So, why wouldn't Yamaha (or Honda, etc) design and install a cam like that to start with? Is there a downside to this mod? . . .
Did you get that cough fixed? . . .
Is there a significant improvement in low end torque with this mod? If so, can we line up a date for me to bring my Honda down to KC so you can do this for me? LOL . . .
74 MPH top end? WOW! That's awesome buddy! (I can't even get 74 KPH out of my Honda) . . .
Excellent stuff my friend! Thanx for sharin'! . . .
PS (take your serious cap off here): Those tires were not designed for high speeds! You're lucky they didn't fly apart on you! I don't ever want to see you going that fast again or you'll be in big trouble YOUNG MAN! Do you hear me!? Are you listening to me!? Now go to your room and think about what you've done! HAHAHAHA!!!! YEEEEHAW!
Heyyyy Buddy! Yes the new camshaft has slightly bigger lobes to open the valves up father also the lobes will hold the valves open longer to allow more air in and out of the engine. The downside can be depending on the amount of duration the valves are open and lift you can either lose some low end torque or lose high rpm power.
The downside to more cam lift, is parts were out quicker/valve springs. So the factory puts something in there that gives you the best of power and low-end torque and longevity.
Did I gain low-end torque?..no if it was on a Dyno you would see the power coming in around 5000 RPM and up, anything below that there’s no improvement.
The only thing to improve low end torque is the clutching..
I did work on the fuel map a little bit for the hesitation. But I haven’t ridden much since the test run though.
Yeah for sure those tires are not made for highway speeds no doubt! You probably won’t see me doing that again? Oops nope maybe in the next video. LOL. Thanks for checking out the video buddy greatly appreciate it!!!!
@@kcatv9556 Thanks buddy! I guess I don't need a new cam after all, but we should probably still come down for a visit - lol
@@quaddingsous We definitely need to get together for a visit somehow?.👍
👏👏👏👏👏👏👏
You might try taking the 1mm shim out! It kills about 4-5 mph.
Also, you may not notice the slightly taller ratio without the shim?
Give it a try? Thanks for the great plug...and awesome videos!👍
Thanks coop I will play around with it.. Thanks for checking out vid!!
Hey Coop, what kind of gains would I see from one of your primary sheaves on my grizzly 660?
@@scottmorris8821
Email me coopsclutchmods@q.com
I'm about to get a 2009 grizzly 700 has a snorkel and a rad it's in pretty good shape any tip or things to look out for 🤠
I would check the belt possibly replace it.
Probably would change the front and rear diff fluids also make sure the engine oil is clean and fresh. Have fun with your new machine thanks for checking out the video!
What would you recommend for repairing the smoking 708 engine? Something that is more long term.
If I’m not mistaken the issue with those engine was the piston rings did not Seat on some of them. I don’t believe there’s any aftermarket parts for those years.
The fix would be put a new factory cylinder piston and rings. That’s what I would be thinking. Hope that helps you out thanks for checking out the video.
There's a recall that will fix your smoking problem. Got mine done free of charge from dealer ship. Put a new cylinder and piston in. You can run your VIN to see if it's covered.
Do you have a video of when your port and polish the head and how it's done
I did not film that process. Sorry about that,
thanks for checking out the video!
Omg you have a awsome property. Wish I had something like this..
Appreciate that, thanks for checking out the video!
How did you do the tuning? I want to do this same mods to my Viking
Yes I did the tuning myself by driving it making test runs while monitoring the A/F ratio gauge. Then building a fuel map off of that.
it was a lengthy process but I have a pretty good map built for it now.
Hope that helps you out thanks for checking out the video!
Can you tell me where you got your camshaft from I'm looking for one for my 550
All balls racing.com is where I bought the camshaft. Thanks for checking out the video!
Lol holly shit u were moving on that blacktop
Haha Way faster than I need to go. LOL Thanks for checking out the video!
When valves were taken out and marked, chain slot was on right. When put back together, chain slot was on left. Did valves go in wrong guides ?
I believe the valves went in correctly. Thanks for checking out the video!
@@kcatv9556 I noticed after my post that in the first part you labeled the valves R , were on the left side of the head, not on the right. You are correct. They are in right.
Hello brother, that cough off idle is a lean condition you need to fatten her up right there especially since the clutch is working the motor at lower rpm.....
You are right on point. I have since made those fuel adjustments to correct that issue. Thanks for checking out the video!
Doc KC! I think you need a new channel! I feel like I am watching an episode of Grey's right now! lol. You know...if you bought a Polaris, you wouldn't have to worry about any of these things? 😎 I do like the muffin tray idea though! If you need any assistance in tuners or what not, don't hesitate to let me know, I have a little access to a few things my friend :-)
Grey’s ? Hum.. I tweak the tuner a little, got the flat spot out of it.
Muffin tens come in handy. LOL
I have fun working on it. Keeps me interested.
Thanks for checking out the video my friend!
@@kcatv9556 You know...Grey's Anatomy? LOL. Just call you Dr. KC. 😎 Always here...lurking, waiting, preparing...a comment or two just for you my friend. lol. If there is footage I look up to for watching...it's You and Q, a few others, and maybe a few more. lol.
Gezz the ole grizz just about hit light speed lol those mods sure helped all the way around .. just from seeing older videos to this one. Why didnt Ms.K get a cam ? She rather see you in trouble lol. Stroker kit coming next , you have the cam and head work done .... haha. Gas mileage...do people worry about them on these ? 🤔. 74mph is pretty dang good , it gets scary on a quad at those speeds , I’ve had the cam am up to 125kmph and it puckered up my .... well you know. Lol. Very nice video !
Haha.. I know what you mean 74 mph pretty sketchy on quad! LOL I would like to do a stroker and big bore kit maybe in a year or so?..
Although with all that stuff being done reliability is going to drop off for sure! Ms K’s quad is fast enough just the way it is. Haha Test rides on it in the next video. Thanks for watching and commenting my friend much appreciated!!
@@kcatv9556 are we taking bets on the year or so ? Lol but agree your starting to stress more parts. I can’t wait to see it in action !
@@SCOTIAN_ I don’t even know why I’m thinking about doing all of that. I guess I just need something to work on. LOL
@@kcatv9556 keeps us out of the house and in trouble with the women ... well that’s what my excuse is haha
@@SCOTIAN_ Haha Yup! I was thinking about it and another reason is the more power a quad has the more fun it is to ride!
Don’t you agree? That’s why Can-am’s are so fun they have the power!! Yeehaw! !
Are you running a full system Exhaust?
Just a slip on. Thanks for checking out the video!
What mod did you do to the air box? I was trying to see in the video
At one point I had the airbox lid opened up a little bit, but it was just too much noise throttling up the quad.
At this point, I really don’t have any mods done to the airbox. Hope that helps you out. Thanks for checking out the video.
@kcatv9556 thanks for your reply. I've spent hours upon hours watching your videos. You guys were a big factor in my buying my grizzly. The only problem I have is , there aren't any places within 2 hours to ride...
Oh, and now the old lady wants me to get her one too!
@@vr6t4dr Haha you mean the wife wants one too. LOL
Same with us, we travel to Arkansas, which is 4 to 5 Hours drive.
Appreciate you checking out the videos!
I’d say 70 on flat and 74 downhill which is still great compared to stock
That’s about right. Thanks for checking out the video!
And by the way where did you get that tack temperature gauge?
It’s A Koso gauge. Bought it online from Koso.
Thanks for checking out the video.
@@kcatv9556 ok thanks I’m going to take a look
Nice Job. I am jealous. No one makes cams for the 708cc Grizzlys/Kodiaks that I know of. If I am not mistaken stock they run like 6500 Rpm. You are up to 8000 now. It might be quicker if you added 2g heavier clutch weights. Yes it will pull the Rpm's down but it should upshift faster making it quicker.
Yes I could play around with heavier clutch weights or lighter secondary spring to change how it up shifts. The Kodiak up shifts much quicker, I test run it in the next video.
Thanks for checking out the video and appreciate the comments as always!!!
@@kcatv9556 I would not go to a lighter secondary spring. The reason is your belt will probable slip with the extra HP you are now making.
@@440cubicinch Yep I agree the only lighter spring is the orange. Which is the one I took off.
@@kcatv9556 Here is a secondary spring list I put together on Grizzly Central. FYI the Venom springs are measured at the same height as EPI etc. www.grizzlycentral.com/threads/secondary-spring-option-list.114052/#post-1119521
Check with web camshafts
Any updates on a new A/F - Timing map?? I talked to Webcam's. They will build camshafts for the 708 engines. Time to dig the wallet out!! lol
I have made a couple of maps But haven’t tried them out yet. Haven’t ridden the quad since making the video.
Yeah I’m sure webCam could make a pretty good camshaft for the 708 engine.
I’m actually posting a video on the 708 engine this Weeknd.
@@kcatv9556 Glad to here you are posting the video on the 708. I was curious what you are going to do to it. I will be watching for it. Thanks for letting us know.
@@440cubicinch 👍
Dam 🏍
👍
Wow, is this the new cam gave you that speed? My 2019 barely reaches 60.
Nice clean work btw.
Cam, head work, clutching all combined with the tuner extending the Revlimiter. All of that stuff combined makes a difference. Thanks for checking out the video!
You can get a Hunterworks modified sheave and will give you a both more lower gearing and more top end speed and if you didn't know a 2019 Grizzy has lower gearing.
@@crazyflyboy30 i have JBS machined sheeve i gained a lot lower end but it didn't change top speed, i you look at up my video i did top 61 mph
@@MidwestAtvGroup it must not have the enough power I have a 2017 with the 708 and it would go 65 mph stock and over 70 mph with the Hunterworks modified sheave but I added more shims to get back to the 65 mph stock speed so I have lot more low gearing than what I looking for.
@@crazyflyboy30 i don't go more than 45 miles p/h anyway, you can't really go fast on trails and most of the time i do mudding and that's where i need more low end.
Can I do this on a 2020 Kodiak? Should I do it if I want more top end or will Coop mod 2&3 alone get me there?
The Coop mod 2&3 Will give you more low end and top end.. As far as cam and head work I don’t know if I’d recommend doing that unless you’re a mechanic and comfortable pulling engines apart.
Hope that helps you out thanks for checking out the video!
@@kcatv9556 roger that thx.
Do you think you would have hit your top end MPH that u did without the head and Cam work and just the mods?
@@samweber2571 I don’t believe it would’ve turned that many RPM without the cam and had work. The clutching did really help the low end..
@@kcatv9556 what does the hot cam and ported heads actually do? I’ve seen EHS racing prove out a 12-13 HP gain on it...
@@samweber2571 Cam and head work allows for more air into the engine. Therefore you could add more fuel and make more power.
I think EHS is putting a cam in also to get those type of horsepower gains..
Witch hotcam is this? I can't seem to find one for a 2020 grizzly would the one from your year fit? Thanks
I believe the 2020 grizzly has the 686 motor correct?
If so then yes this cam would fit in your machine.
Part # 4128-2
Thanks for checking out the video!
Hay man I thought I would let you know (you probably already know) but you put the valve springs in upside down if it’s running fine don’t touch it but awesome build 👍
Only springs that have a top and a bottom is a tapered spring or a beehive spring which these were not.
Anyways still running strong since the build.
Thanks for checking out the video!
I didn’t know 700s didn’t have the bee hive springs I saw the blue marking on them and usually that means that side faces down at least on all the 450 Kodiak builds I’ve done but I haven’t worked on a ton of 700 at least not internally wise like I have on 450s
Who did your head work?
Hi Jack, Did it myself. Thanks for checking out the video.
Looks like she got more get up and go
Hi David, yeah buddy got a little more pep in the step! LOL thanks for checking out the video!
What this cylinder and piston?
Stock cylinder and piston.. Thanks for watching much appreciated!!
You’re gonna give them big bore machines a run for their money.
Haha I don’t know? I am impressed with the way it runs though! Thanks for checking out the video!
Can you tell me the year off this grizzly and valves settings are with this cam thanks
The year is 2015 and the valve settings are..
intake 0.005”
Exhaust 0.007
Hope that helps you out thanks for watching!
@@kcatv9556 thanks I got a 2014 and whant a stage 2 cam ,I’ve been looking at the coops machine sheave ,waiting on a price and post to the uk
@@nipper1239 Yup 14 and 15 are identical. I’m really happy with the pick up this work gave it.
I’m sure coop can get you one ship to the UK.
Whats the estimate hp gain?
I guess it’s 8 to 10 hp. It picked it up really nice! Thanks for checking out the video.
@@kcatv9556 no problem. Great video. Do you have any reliability issues? I race amateur hare scrambles on my 700 and im thinking of doing engine upgrades if I ever need to do a rebuild. Right now the 686 is bulletproof so I'm reluctant In doing anything to it
@@kaoz250f1 I hear ya the 686 is pretty reliable no doubt.
I haven’t had any issues at all but in reality I just trail ride.
I don’t run it that hard very often. I actually took the shim out of the clutch since this video so it would slow the engine down a little more while trail riding.
@@kcatv9556 yeah I have the stock ultramatic set up too. I richened it up with a programmer and open exhaust (not crazy loud) but it for sure could use a touch more power. Thanks for the responses. have fun and ride safe!
All that work, time and cash into his machine just to try and keep up to a Canam 1000R. Why?
I have fun working on my stuff. If I’m not working on it, I get bored with it. Also, it runs better now. Thanks for checking out the video!
So you take apart a engine whilst its cover in dirt and mud not thinking something may fall in to the motor you are a pure butcher I would let you lace a pair of boots
You have no idea what you're talking about ..