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primary clutch question?

My spring is cutting into the aluminum pretty good especially when it broke the first time im wondering if anybody has ever tried putting a shim in between the spring and housing. I found some shims that seem to fit good. It is only 8 thou. So shouldnt make any changes im thinking. Any thoughts on this.

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common fix. Most use derlin washer or something to help it slide around easier and not bind/dig in to aluminum.
 
The shim i have is a stainless steel one so i think ill try it. I work at a automotive shop and have a endless supply of these shims in all sizes they are used in differentials.
 
Check your spider also. It's a good catch and must be remedied.
Machining of the pockets and adding the glide washers is a must. Adding the glide washers and not machining the pockets in time will render the same issue. During loading and unloading the spring must be able to rotate. Locked in the wear groves it is only a matter of time before primary spring fatigue surfaces again.
The primary springs that Polaris offer today, IMO, are the culprit. The tang end of the coils do not lay flat against the last coil. With the cost of a new primary today, we must be more vigilant about maintenance.
One thing to remember, the addition of glide washers without machining will change your spring rates.
 
Check your spider also. It's a good catch and must be remedied.
Machining of the pockets and adding the glide washers is a must. Adding the glide washers and not machining the pockets in time will render the same issue. During loading and unloading the spring must be able to rotate. Locked in the wear groves it is only a matter of time before primary spring fatigue surfaces again.
The primary springs that Polaris offer today, IMO, are the culprit. The tang end of the coils do not lay flat against the last coil. With the cost of a new primary today, we must be more vigilant about maintenance.
One thing to remember, the addition of glide washers without machining will change your spring rates.

Perhaps filing a chamfer on the tangs would help alleviate some gouging/binding

They need steel spring cups, like team uses in the secondary.

Oooohhh and a flat needle bearing between the cup and the casting!!

I just run the delrin washers in my primary. Indy Specialties sells them,called slick shift washers

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I would like to see someone machine the secondary spring cups out of Delrin, it would serve both functions and be about 1/3 the weight. My 2 cents
 
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