Originally Posted by
RED DOG
I need to jump in here (even though I know I'll probably be getting in way over my head). I've read most of the forum's 62mm S/C pulley posts and I understand the concept of the redesigned pulley along with the quest for faster acceleration. One post referenced "does it fix the problem" which I took to infer that I might expect a problem with the OEM S/C pulley down the road? Questions: 1) Is there an inherent problem with the OEM pulley? 2) There are many references to the fact that the various 62mm pulley offerings might not be available in the future. Even though the increased speed / engine power modifications are way down on my priority list, should I be moving to get a 62mm S/C pulley now while they are still available? I realize that this new E-Bay pulley offering is still untested but of the others that might be still available in the marketplace, which one is the best design and provides the best results. Thanks for sharing your expertise and pointing me in the right direction on this issue.
there are 2 inherent issues with the s/c pulley design regardless of the size.
1. the s/c pulley bearing is a wear item. over time the bearings go bad and need to be replaced. for the oem or the 65mm pulley they use the same bearing which is readily available. because the new 62mm s/c pulley uses a smaller design until the pulley is taken apart and a replacement bearing sourced you could in theory have a nice paperweight if the bearing fails due to the inc. speeds it spins.
2. the metal straps that attach the main pulley body to the magnetic backing plate and the associated rivets due wear over time. there is a load on the straps while the pulley is engaged so again a wear item. a few have repaired them most replace the pulley.
the diameter of the pulley makes no difference on the wear. the oem pulley can be machined down for more power, eurocharged builds a 65mm pulley for even more power and now this 62mm is being built. there are many options out there now.