If I took a stock grizz 700 and added heavier weights, the belt system would engage and gear higher quicker/engine rpm correct? I always read on here about lighter weights so you can gain more rpms for mudding etc... I am old school honda and kind of like to putt around more quietly (but love the performance of the 700!). If I put heavier weights on the 700, the tranny would accelerate sooner, correct. What are the pros and cons of this. If I did something like mods 1,2,and 3, would they help alleviate the cons (assuming you are going to say it would be geared to high w/o the mods...)? Thanks for the insight, curious minds!
seedcleaner
it would prolly lower your accelleration as well because you wont be at the correct rpm range that most of the power is made at. but i also used to be old school honda and it was nice from time to time to slap it in 4 or 5th and just cruise But the mighty grizz is well worth that sacrafice
This might help you understand just what effects the weights have on your clutch. This used to be a sticky. Hope it helps.
Dieseltech
One thing is to understand what these parts do.
The shim mod (coop45 mod) will give you basically a gear reduction due to making the belt ride lower in the primary sheave (drive pulley) & will make the belt ride higher on the secondary sheave.
The shim will give you more torque multiplycation thoughout your powerband
The rollers will change the timing/shift out or how soon it will change gears per say.
Lighter rollers will stay in 1st gear longer & is good for torque multiplycation inwhich reduces boging BUT
(its kinda like having a drag car that does excessive wheel stands--if the weight transfer from the wheel stand is not needed, then your just losing ET by forcing the car into the air instead of traving forward.)
So if your not boging than you dont need the lighter rollers.
Also the lighter rollers will make you engine turn more RPMs while path riding because the lighter rollers wont let the belt shift into 2nd gear or 3rd LoL So roller weight depends on riding style.
Heavier rollers will get you into your mid range curve sooner. Lets say that Heavier rollers will shift out of 1st gear sooner & gets you into 2nd sooner. (you get wheel speed faster to clean your tires unless your boging then the rollers are to heavy)
The internal clutch springs allows a higher engagement before the bike moves in which its side effect is shorted internal clutch life & more contamination of the oil.
The secondary spring changes the shift out/timing also & increases or decreases the pulleys bite on the belt & increased or decreased engine braking.
PS after adding shims
(run the motor before putting the clutch housing cover on so the belt will set in place & not rub the housing cover at start up.)
Primary Rollers
HERES SOME #s I DID UP, I THOUGHT WAS INTERESTING
The 350s has 6 rollers total
The 400 & larger atvs has 8 rollers total
6 roller housing
6ea x 12 = 72 total
3ea x 12 + 3ea x 14 = 78 total
3ea x 12 + 3ea x 16 = 84 total
6ea x 14 = 84 total
3ea x 12 + 3ea x 18 = 90 total
3ea x 14 + 3ea x 16 = 90 total
3ea x 12 + 3ea x 20 = 96 total
3ea x 14 + 3ea x 18 = 96 total
6ea x 16 = 96 total (stock 350)
3ea x 14 + 3ea x 20 = 102 total
3ea x 16 + 3ea x 18 = 102 total
3ea x 16 + 3ea x 20 = 108 total
6ea x 18 = 108 total
3ea x 18 + 3ea x 20 = 114 total
8 roller housing
8ea x 12 =96 total
4ea x 12 + 4ea x 14 = 104 total
4ea x 12 + 4ea x 16 = 112 total
8ea x 14 = 112 total (stock 400 & 450)
4ea x 12 + 4ea x 18 = 120 total
4ea x 14 + 4ea x 16 = 120 total
4ea x 14 + 4ea x 18 = 128 total
4ea x 12 + 4ea x 20 = 128 total
8ea x 16 = 128 total (stock 550 & 600)
4ea x 14 + 4ea x 20 = 136 total
4ea x 16 + 4ea x 18 = 136 total
8ea x 18 = 144 total (stock 660)
4ea 18 + 4ea x 20 = 152 total
8ea x 20 = 160 total (stock 700)
Stock 07 350, 09 550 & 01 600 has 14-gram rollers, with cover =16 grams.
Yamaha roller part# 4WV-17632-00-00
Stock 07 400 & 450 has 12-gram rollers, with cover =14 grams.
Yamaha roller part# 5GH-17632-00-00
Stock 07 660 has 16-gram rollers, with cover=18 grams.
Yamaha roller part# 5KM-17632-00-00
Stock 07 700 has 18-gram rollers, with cover=20 grams.
Yamaha roller part# 3B4-17632-00-00
__________________________________________________ _________
Shimming the primary sheave.
Shimming lowers your max speed a avg. 5mph give or take
When shimming the 350 2mm you will have to leave off the retaining nut washer on the primary sheave to get enough threads for a full nut.
Also the 350 has more belt housing to secondary sheave clearance on the 350 than the 450.
Infact the belt don't ride up as high on the secondary on the 350 compared to the 450 & both atvs primarys were shimmed 2mm.
When shimming the 450 2mm, the belt will rub holes into the belt cover (in the pic below). I only had 2 to rub completely through & they where the 2 on the left of this pic.
When the cover is mounted, those holes are on the bottom corner area.
Dieseltech
One thing is to understand what these parts do.
The shim mod (coop45 mod) will give you basically a gear reduction due to making the belt ride lower in the primary sheave (drive pulley) & will make the belt ride higher on the secondary sheave.
The shim will give you more torque multiplycation thoughout your powerband
The rollers will change the timing/shift out or how soon it will change gears per say.
Lighter rollers will stay in 1st gear longer & is good for torque multiplycation inwhich reduces boging BUT
(its kinda like having a drag car that does excessive wheel stands--if the weight transfer from the wheel stand is not needed, then your just losing ET by forcing the car into the air instead of traving forward.)
So if your not boging than you dont need the lighter rollers.
Also the lighter rollers will make you engine turn more RPMs while path riding because the lighter rollers wont let the belt shift into 2nd gear or 3rd LoL So roller weight depends on riding style.
Heavier rollers will get you into your mid range curve sooner. Lets say that Heavier rollers will shift out of 1st gear sooner & gets you into 2nd sooner. (you get wheel speed faster to clean your tires unless your boging then the rollers are to heavy)
The internal clutch springs allows a higher engagement before the bike moves in which its side effect is shorted internal clutch life & more contamination of the oil.
The secondary spring changes the shift out/timing also & increases or decreases the pulleys bite on the belt & increased or decreased engine braking.
PS after adding shims
(run the motor before putting the clutch housing cover on so the belt will set in place & not rub the housing cover at start up.)
Primary Rollers
HERES SOME #s I DID UP, I THOUGHT WAS INTERESTING
The 350s has 6 rollers total
The 400 & larger atvs has 8 rollers total
6 roller housing
6ea x 12 = 72 total
3ea x 12 + 3ea x 14 = 78 total
3ea x 12 + 3ea x 16 = 84 total
6ea x 14 = 84 total
3ea x 12 + 3ea x 18 = 90 total
3ea x 14 + 3ea x 16 = 90 total
3ea x 12 + 3ea x 20 = 96 total
3ea x 14 + 3ea x 18 = 96 total
6ea x 16 = 96 total (stock 350)
3ea x 14 + 3ea x 20 = 102 total
3ea x 16 + 3ea x 18 = 102 total
3ea x 16 + 3ea x 20 = 108 total
6ea x 18 = 108 total
3ea x 18 + 3ea x 20 = 114 total
8 roller housing
8ea x 12 =96 total
4ea x 12 + 4ea x 14 = 104 total
4ea x 12 + 4ea x 16 = 112 total
8ea x 14 = 112 total (stock 400 & 450)
4ea x 12 + 4ea x 18 = 120 total
4ea x 14 + 4ea x 16 = 120 total
4ea x 14 + 4ea x 18 = 128 total
4ea x 12 + 4ea x 20 = 128 total
8ea x 16 = 128 total (stock 550 & 600)
4ea x 14 + 4ea x 20 = 136 total
4ea x 16 + 4ea x 18 = 136 total
8ea x 18 = 144 total (stock 660)
4ea 18 + 4ea x 20 = 152 total
8ea x 20 = 160 total (stock 700)
Stock 07 350, 09 550 & 01 600 has 14-gram rollers, with cover =16 grams.
Yamaha roller part# 4WV-17632-00-00
Stock 07 400 & 450 has 12-gram rollers, with cover =14 grams.
Yamaha roller part# 5GH-17632-00-00
Stock 07 660 has 16-gram rollers, with cover=18 grams.
Yamaha roller part# 5KM-17632-00-00
Stock 07 700 has 18-gram rollers, with cover=20 grams.
Yamaha roller part# 3B4-17632-00-00
__________________________________________________ _________
Shimming the primary sheave.
Shimming lowers your max speed a avg. 5mph give or take
When shimming the 350 2mm you will have to leave off the retaining nut washer on the primary sheave to get enough threads for a full nut.
Also the 350 has more belt housing to secondary sheave clearance on the 350 than the 450.
Infact the belt don't ride up as high on the secondary on the 350 compared to the 450 & both atvs primarys were shimmed 2mm.
When shimming the 450 2mm, the belt will rub holes into the belt cover (in the pic below). I only had 2 to rub completely through & they where the 2 on the left of this pic.
When the cover is mounted, those holes are on the bottom corner area.
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