Right, I am just in the process of tearing down the bottom end of the lump I got from Siamblue last week and have noticed that the conrods from my old engine which I am intending to use are slightly different from the ones in the new engine (apart from the newer ones being slightly more curved then normal !) The newer lump is an S70 B5234T3 and the conrods from it appear slightly wider in the beam and a little different around the little end. The gudgeon pins also seems to have a larger inner bore then the 850 ones. Is all this purely different design characteristics or is there a significant difference in strength between the old 850 rods and the newer s70 ones which might result in me sourcing some replacements ?
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