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Old 12-14-2010, 06:18 PM
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In the past, I had bronze guides installed. This was way back in 1996. Anyways, I didn`t get 20,000 miles out of them and they were shot which really ticked me off. Instead of having them reinstalled I used cast iron guides this go round. I put many a mile on those heads, likely over 50,000 and when I sold them the guides were still in good shape. I`ve had others tell me they`ve had good luck and long use out of bronze guides, I never did so I`ve stayed away from them. When the bronze guides were removed, we noticed the ones with the most wear were worn crooked. They were fine at the top but worn to one side on the bottom which made me think it likely had some valve train geometry issues or the guides weren`t installed straight by the first machinist.
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