When I bought my Molnar power adders I was told to only stretch them. When I got them, they were torqued. Before I loosened them, I measured them. they were only stretched to .004" so they were honed to size at that stretched amount. So being they want you to go more I would have to believe that the extra torque wouldn't distort the bore. I have the motor running now for a year with no problems at all.
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My Half AN Injun.....
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