which 340/s clutch is correct

[Sprailfire340]

I picked up a parts 340/s and the clutches are different. The outer plates both look the same and say 102-c, but obviously they are different. Pics here http://s906.photobucket.com/albums/ac26 ... 0clutches/
Compare A vs B.

I'm inclined to think A is correct. So what is the other?

[Matt]

The "open" one is either a newer version, or the cover has been removed, but it's the same clutch. It's better to run them open for better cooling, less dust build-up, and ease of lubrication.

[Sprailfire340]

Thanks Matt. Interesting that the open one is on most original of the two sleds. The other one with all the race mods still had the closed version on it.

[Dator76]

even the liquidator came originally with the closed clutch but the cover was quickly removed when they started burning up clutches.

[AirborneX4Special]

I think they were attempting to keep the dirt and debris out and wound up keeping the belt frags and heat inside.