grizzly 700 clutch kit
#1
#2
grizzly 700 clutch kit
I ordered one of these yesterday.
It is a new primary clutch sheave that has been re-machined, and includes lighter clutch weights, and a packet of grease you will need for installation.
The new sheave is machined a little farther down toward the middle, which lets the belt ride lower on the primary pulley, and higher on the secondary pulley, which gives you lower initial gearing off idle. But the sheave is also tapered different than stock, so at wide open throttle the primary clutch will shift out farther, and the belt rides higher on the primary pulley, and lower on the secondary pulley, which increases top speed. What you get is lower gearing on the bottom end, higher gearing on the top end, and faster acceleration in the middle.
I haven't received my new sheave yet, so I haven't had the chance to try it on the Grizzly yet. But I have used a Trinity Racing sheave on our Rhino, and as far as bang for the buck goes, the sheave change did more to improve performance than any other mod did. The Trinity sheave helped the Rhino far more than intake mods or aftermarket exhaust did, and it cost half as much as an exhaust, ... and doesn't make more noise. A new sheave is a great sleeper mod. Your ATV is faster because of it, but no one can see (or hear) why it is faster.
Welcome to the forum, and welcome to the Yamaha family. You're going to love that new Grizzly.
DV
It is a new primary clutch sheave that has been re-machined, and includes lighter clutch weights, and a packet of grease you will need for installation.
The new sheave is machined a little farther down toward the middle, which lets the belt ride lower on the primary pulley, and higher on the secondary pulley, which gives you lower initial gearing off idle. But the sheave is also tapered different than stock, so at wide open throttle the primary clutch will shift out farther, and the belt rides higher on the primary pulley, and lower on the secondary pulley, which increases top speed. What you get is lower gearing on the bottom end, higher gearing on the top end, and faster acceleration in the middle.
I haven't received my new sheave yet, so I haven't had the chance to try it on the Grizzly yet. But I have used a Trinity Racing sheave on our Rhino, and as far as bang for the buck goes, the sheave change did more to improve performance than any other mod did. The Trinity sheave helped the Rhino far more than intake mods or aftermarket exhaust did, and it cost half as much as an exhaust, ... and doesn't make more noise. A new sheave is a great sleeper mod. Your ATV is faster because of it, but no one can see (or hear) why it is faster.
Welcome to the forum, and welcome to the Yamaha family. You're going to love that new Grizzly.
DV
#3
#5
grizzly 700 clutch kit
It has been a month since I originally replied to this post, and in that month I have had the chance to install the Fix sheave, and try several different combinations of roller weights in an attempt to tune it for better performance. I did several timed drag races on an uphill 6% slope, on pavement. The starting line, and three finish lines were painted on the road, so the actual length of the race, and the place of the race would be consistent, and times were taken with a stop watch accurate to within .01 seconds. I timed three races for each clutch set up, and for each distance, and these times are the averages of three runs. The stock Grizzly 700 weights are 21 grams, the Grizzly 660 weights are 18 grams, and the fix weights are 15.7 grams.
Here are the results:
------------------------200'----------------300'----------------400'-----------Top Speed
stock clutch-----------5.63 sec-----------7.33 sec-----------8.98 sec----------64 mph
Fix sheave------------5.80----------------7.46---------------9.15---------------63 mph
& 8 Fix wts.
Fix sheave &----------5.84----------------7.55---------------9.22------------Not tested
4 Fix / 4 660 wts
Fix sheave &
4 Fix / 4 700 wts------5.89----------------7.95---------------9.36--------------69 mph
For every combination of weights I used on the Fix sheave I got slower acceleration than the same combination with the stock sheave. Some weight combinations allow you to turn big tires easier than stock, and some decrease your ability to turn big tires. The Fix sheave may be a viable clutch mod for some people, but for me it did not help, but rather, decreased performance. I was looking for improved acceleration, which is different than improved ability to turn oversized tires. I have since gone back to the stock sheave with a combination of six Grizzly 660 weights and two Grizzly 700 weights, which is giving me the best results thus far on my Grizzly 700 with 25" Terracross tires.
DV
Here are the results:
------------------------200'----------------300'----------------400'-----------Top Speed
stock clutch-----------5.63 sec-----------7.33 sec-----------8.98 sec----------64 mph
Fix sheave------------5.80----------------7.46---------------9.15---------------63 mph
& 8 Fix wts.
Fix sheave &----------5.84----------------7.55---------------9.22------------Not tested
4 Fix / 4 660 wts
Fix sheave &
4 Fix / 4 700 wts------5.89----------------7.95---------------9.36--------------69 mph
For every combination of weights I used on the Fix sheave I got slower acceleration than the same combination with the stock sheave. Some weight combinations allow you to turn big tires easier than stock, and some decrease your ability to turn big tires. The Fix sheave may be a viable clutch mod for some people, but for me it did not help, but rather, decreased performance. I was looking for improved acceleration, which is different than improved ability to turn oversized tires. I have since gone back to the stock sheave with a combination of six Grizzly 660 weights and two Grizzly 700 weights, which is giving me the best results thus far on my Grizzly 700 with 25" Terracross tires.
DV
#6
grizzly 700 clutch kit
check out www.hauckperformance.com. They have been machining yamaha's clutches for years. They did my wolverine and I can't say enough good about it...I gained a ton of bottom end and almost 10 mph on the top.
They may not have the grizz 700 listed specifically, but give them a call and they will hook you up. There are 10 or more people on this site who have had their wolverines done and they will all tell you the same thing.
I don't have any numbers for performance increase...but I have done quite a few races before and after. Before, my buddies grizz 700 smoked me from start to finish, after the pipe, jets, filter, and hauck clutch, I beat him until I top out around 57. Same with all my other races...I'm faster off the line than anything else I have raced. I know the pipe, filter and jets also helped the performance, but the clutch work did the most.
They may not have the grizz 700 listed specifically, but give them a call and they will hook you up. There are 10 or more people on this site who have had their wolverines done and they will all tell you the same thing.
I don't have any numbers for performance increase...but I have done quite a few races before and after. Before, my buddies grizz 700 smoked me from start to finish, after the pipe, jets, filter, and hauck clutch, I beat him until I top out around 57. Same with all my other races...I'm faster off the line than anything else I have raced. I know the pipe, filter and jets also helped the performance, but the clutch work did the most.
#7
grizzly 700 clutch kit
<div class="FTQUOTE"><begin quote>Originally posted by: DesertViper
It has been a month since I originally replied to this post, and in that month I have had the chance to install the Fix sheave, and try several different combinations of roller weights in an attempt to tune it for better performance. I did several timed drag races on an uphill 6% slope, on pavement. The starting line, and three finish lines were painted on the road, so the actual length of the race, and the place of the race would be consistent, and times were taken with a stop watch accurate to within .01 seconds. I timed three races for each clutch set up, and for each distance, and these times are the averages of three runs. The stock Grizzly 700 weights are 21 grams, the Grizzly 660 weights are 18 grams, and the fix weights are 15.7 grams.
Here are the results:
------------------------200'----------------300'----------------400'-----------Top Speed
stock clutch-----------5.63 sec-----------7.33 sec-----------8.98 sec----------64 mph
Fix sheave------------5.80----------------7.46---------------9.15---------------63 mph
& 8 Fix wts.
Fix sheave &----------5.84----------------7.55---------------9.22------------Not tested
4 Fix / 4 660 wts
Fix sheave &
4 Fix / 4 700 wts------5.89----------------7.95---------------9.36--------------69 mph
For every combination of weights I used on the Fix sheave I got slower acceleration than the same combination with the stock sheave. Some weight combinations allow you to turn big tires easier than stock, and some decrease your ability to turn big tires. The Fix sheave may be a viable clutch mod for some people, but for me it did not help, but rather, decreased performance. I was looking for improved acceleration, which is different than improved ability to turn oversized tires. I have since gone back to the stock sheave with a combination of six Grizzly 660 weights and two Grizzly 700 weights, which is giving me the best results thus far on my Grizzly 700 with 25" Terracross tires.
DV</end quote></div>
Great write up as always DV... Good to see some actual testing...
It has been a month since I originally replied to this post, and in that month I have had the chance to install the Fix sheave, and try several different combinations of roller weights in an attempt to tune it for better performance. I did several timed drag races on an uphill 6% slope, on pavement. The starting line, and three finish lines were painted on the road, so the actual length of the race, and the place of the race would be consistent, and times were taken with a stop watch accurate to within .01 seconds. I timed three races for each clutch set up, and for each distance, and these times are the averages of three runs. The stock Grizzly 700 weights are 21 grams, the Grizzly 660 weights are 18 grams, and the fix weights are 15.7 grams.
Here are the results:
------------------------200'----------------300'----------------400'-----------Top Speed
stock clutch-----------5.63 sec-----------7.33 sec-----------8.98 sec----------64 mph
Fix sheave------------5.80----------------7.46---------------9.15---------------63 mph
& 8 Fix wts.
Fix sheave &----------5.84----------------7.55---------------9.22------------Not tested
4 Fix / 4 660 wts
Fix sheave &
4 Fix / 4 700 wts------5.89----------------7.95---------------9.36--------------69 mph
For every combination of weights I used on the Fix sheave I got slower acceleration than the same combination with the stock sheave. Some weight combinations allow you to turn big tires easier than stock, and some decrease your ability to turn big tires. The Fix sheave may be a viable clutch mod for some people, but for me it did not help, but rather, decreased performance. I was looking for improved acceleration, which is different than improved ability to turn oversized tires. I have since gone back to the stock sheave with a combination of six Grizzly 660 weights and two Grizzly 700 weights, which is giving me the best results thus far on my Grizzly 700 with 25" Terracross tires.
DV</end quote></div>
Great write up as always DV... Good to see some actual testing...
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#8
grizzly 700 clutch kit
<div class="FTQUOTE"><begin quote>Originally posted by: MIwolvy
check out www.hauckperformance.com. They have been machining yamaha's clutches for years. They did my wolverine and I can't say enough good about it...I gained a ton of bottom end and almost 10 mph on the top.
They may not have the grizz 700 listed specifically, but give them a call and they will hook you up. There are 10 or more people on this site who have had their wolverines done and they will all tell you the same thing.
I don't have any numbers for performance increase...but I have done quite a few races before and after. Before, my buddies grizz 700 smoked me from start to finish, after the pipe, jets, filter, and hauck clutch, I beat him until I top out around 57. Same with all my other races...I'm faster off the line than anything else I have raced. I know the pipe, filter and jets also helped the performance, but the clutch work did the most.</end quote></div>
how much did they charge you for the clutch work?
check out www.hauckperformance.com. They have been machining yamaha's clutches for years. They did my wolverine and I can't say enough good about it...I gained a ton of bottom end and almost 10 mph on the top.
They may not have the grizz 700 listed specifically, but give them a call and they will hook you up. There are 10 or more people on this site who have had their wolverines done and they will all tell you the same thing.
I don't have any numbers for performance increase...but I have done quite a few races before and after. Before, my buddies grizz 700 smoked me from start to finish, after the pipe, jets, filter, and hauck clutch, I beat him until I top out around 57. Same with all my other races...I'm faster off the line than anything else I have raced. I know the pipe, filter and jets also helped the performance, but the clutch work did the most.</end quote></div>
how much did they charge you for the clutch work?
#9