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Old 05-28-2004, 07:44 PM   #1
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Default RB concept S7 Europa piston pitting

I just got an RB S7 europa and upon removing the heatsink head, I noticed that the top of the piston is somewhat pitted. I was just wondering if this is considered normal ware, or if I should replace the piston and sleve. Also what are some good websights where I can purchase parts for RB Concepts Parts?
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Old 05-29-2004, 08:25 PM   #2
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If it is pitting, it can be caused by predetonation by to high of nitro content. RB's are generally set up for up to 25%, you need to add a .5mm shim to safely run 30%.
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