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Hmm, would they be wide enough to completely get rid of the side load on the lifters? I mean, would the cam lobe allways be pushing from underneath instead of from the side/edges? This does look good to me though. Although: why are they so short? Also, I wonder what the 'mindre modifiering' (small modifications) to the block would be?
Like you say, "profiles that require mushroom lifters are not something you would ever use in a road car" is correct. The numbers will be different. However, with mushroom lifters, the advertised duration at different liofts would be less then with the stock lifters if the base circle would be the same (since the mushroom lifters base is wider). Also, I think you might need a larger base circle on the cam to be able to get to a usable profile (Case F). If the bottom surface is still relative small, the cam will still push against the side of the lifter (Case E). To eliminate side load on the lifter, you always wnat the highest point of the cam to be right 'under' the lifter bottom surface area, and not 'outside' of it. But if the mushroom cam has a large base circle, total duration numbers can not also not be compared.
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P131, '65, B20B+M47. P131, '69, B20E+AW71L+LSD. (www.tinustechniek.tk)
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