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I changed my 2002 ZL 600 efi clutch components to match a stock 2002 ZR 600 efi clutch setup this past weekend, and it made a HUGE difference. The ZL now gets up to 100mph quickly with tons of mid-range power. Instantaneous power at all speeds, its like a I have a different engine! The old ZL clutch setup seemed to have a little delay in releasing power. I don’t know why Arctic Cat would ever clutch them differently? If anyone reading this has a ZL, I highly recommend doing the same swap if your sled is the same year, or talk to AC dealer of what you can do for different year sled. All the extra performance for under $100!!! It is so much more fun to drive, like a new sled. It now engages at 4200-4300 and max rev at 8200. Thought I would share my newbie experience with anyone interested.
Here are the stock clutch differences:
The ZL has -53 helix, the ZR has -55/53 helix
The ZL has 52g weights, the ZR has 53g weights
The ZL has Red/White primary spring (Drive clutch), the ZR has Yellow/Green spring
I went to the AC dealer and bought the above parts (under $100), and my friend and I previously have only changed weights before, and we swapped all the parts in about 2 hours. No clutch-puller, no special tools, just a small torque T27 ratchet and wrenches. The weights were obviously no problem, pulled out the secondary clutch and the helix was simple, and hardest part about the primary spring was getting at the cover plate bolts. There were only a few inches to fit the ratchet so had to take our time. To compress the new spring, one guy just pushed on the center of the cover plate with piece of wood through the access hole on the side, and the other guy tightened the screws back on. Done. (The AC dealer said he would swap the parts and charge about an hour of labor, about $90-$100).
Here are the stock clutch differences:
The ZL has -53 helix, the ZR has -55/53 helix
The ZL has 52g weights, the ZR has 53g weights
The ZL has Red/White primary spring (Drive clutch), the ZR has Yellow/Green spring
I went to the AC dealer and bought the above parts (under $100), and my friend and I previously have only changed weights before, and we swapped all the parts in about 2 hours. No clutch-puller, no special tools, just a small torque T27 ratchet and wrenches. The weights were obviously no problem, pulled out the secondary clutch and the helix was simple, and hardest part about the primary spring was getting at the cover plate bolts. There were only a few inches to fit the ratchet so had to take our time. To compress the new spring, one guy just pushed on the center of the cover plate with piece of wood through the access hole on the side, and the other guy tightened the screws back on. Done. (The AC dealer said he would swap the parts and charge about an hour of labor, about $90-$100).