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Old 07-26-2017, 09:39 AM   #70
Silber
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Join Date: Aug 2016
Posts: 166
Quote:
Originally Posted by Gelbster View Post
The freeze plug & grease washout.I don't understand.
The fundamental problem is that conventional IMSB wisdom suggests the bearing seals deteriorate because of heat.
I am not sure this is entirely right, I think the main problem is the heat cycles of the air in the IMS tube sucking oil past the seals. I am trying to solve that issue.

So, I am correcting the problem I think to be the root cause of the issue. I can see heat deteriorating the seals to some degree, perhaps a bearing with Viton seals would be ideal. If heat deterioration was the only issue, why would the oil run into the IMS tube, but not come back out?

I am leaning toward the pelican bearing with the freeze plug rather than a fancy ceramic bearing, not sure if I really believe ceramic is needed at this point especially if I change them every time I change the clutch. Standard 6204's are around US $6-10 each. Porsche thought they were a lifetime solution and if I can fix the oil ingress issue, I can probably make 75k miles or so.

Silber

P.S. - Here was where I explain my theory IMS - Going with SKF hybrid
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2002 Boxster S - Silver/Boxster Red
Coilovers - LSD - CAI - High Flow exh. - F&R Adjustable Sways
LN 3.2 to 3.8 - parts acquired, pending assembly and tuning

Last edited by Silber; 07-26-2017 at 10:41 AM.
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