The non rope seals rely on factory block machining to be almost perfect. And they from reports are not all perfect and didnt have to be perfect with the stock configuration rope seal
I am running the improved rope seal in one car for near 8 years no drips from engine, Tightest engine i have ever done with the rope seal and viton valve seals combined
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........... The More You Follow The Herd The Less You Can Be In The Lead ..........
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