clivegto Posted February 19, 2017 Share Posted February 19, 2017 Are busa rods stronger than bandit 1200 con rods. Have heard of people fitting them are there advantages to them when using the busa pistons as well for turbo motor. Quote Link to comment
no class Posted February 19, 2017 Share Posted February 19, 2017 (edited) They are physically beefier compared to gsf...can't confirm if they are stronger . Gen 1 busa are 119mm length to gsf 117mm .... small/ big ends identical.....longer rods do not increase stroke .... they decrease piston speed. Will work on gsf for turbo use and will require a base spacer if used as a complete assembly ......setting a .040" squish is a good goal . Edited February 19, 2017 by no class 1 Quote Link to comment
Captain Chaos Posted February 19, 2017 Share Posted February 19, 2017 49 minutes ago, no class said: longer rods increase piston speed no, shorter rods increase piston speed. 2 Quote Link to comment
MeanBean49 Posted February 19, 2017 Share Posted February 19, 2017 (edited) Length of rods does nothing to piston speed at all! Just alters its start and end position. Only thing that can change poston speed is the stroke changing. Edited February 19, 2017 by MeanBean49 1 Quote Link to comment
Captain Chaos Posted February 19, 2017 Share Posted February 19, 2017 average piston speed stays the same yes, but maximum piston speed depends on rod length as well. 1 Quote Link to comment
Captain Chaos Posted February 19, 2017 Share Posted February 19, 2017 (edited) google gives only approximate piston speed calculations, so I dived into my old books. Vpiston = 2 π n r (sinφ + (r/2l) sin2φ) in which n = engine speed, r = half stroke, φ = crank angle (in rad), l = rod length. However small the influence of the rod length may be, it's still there. Longer rod means more even piston speed, shorter rod means more variation in piston speed (and thus a higher max speed since the min speed cannot be smaller than zero). Edited February 19, 2017 by Captain Chaos clarity 1 Quote Link to comment
MeanBean49 Posted February 19, 2017 Share Posted February 19, 2017 (edited) I get you. Not worth caring about when its only 2mm tho lol. Edited February 19, 2017 by MeanBean49 Quote Link to comment
Diebythereaper Posted February 22, 2017 Share Posted February 22, 2017 They are alot stronger and rated for 300bhp from others experience (one SSB racer ran them to 400 for an entire season apparently....) Standard rods are good for 250bhp before the little ends let go , again from others experience, me I fit carillos and forget - you know what you have then - reliability! 1 Quote Link to comment
MeanBean49 Posted February 23, 2017 Share Posted February 23, 2017 Standard Rods have been good for 280bhp for me for 3 years. Thats on an abused 45k miles bottom end 6 Quote Link to comment
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