Hi, I purchased a SBT crankshaft for my 700 polaris and installed it approximately 1.5 months ago. Everything seems to be working okay so far, however I'm concerned about one thing. Whenever I received the crankshaft I noticed that the surface of the crankshaft where the magneto seal rides was marred; it was basically not smooth like it should be. Upon inspection, I determined that a tool, possibly a vice or vee block, had made the marks. I went ahead and installed the crankshaft since I wasn't sure if the surface imperfections were on the actual sealing area of the crankshaft and since I've heard nothing but praise about SBT crankshafts. I tried to measure to make sure, but it was too close to call. I pressure tested after completing assembly and it held 9 psi for 10 min. without any noticeable drop in pressure, so I know it was sealing at this point. However, I theorize that if there is a problem, it will show up after use since the seal may possibly develop small tears in it. Should I be worried or is this a common occurance? I would think the crank would have something to protect it from this type of damage while it is being trued and assembled.
BTW, I've ran approximately 3 tanks of fuel through it so far (9.8 gal/tank) and have removed the magneto cover to install an oil block off plate. I didn't notice any fluid in the housing. I guess if it was leaking it would have had something there by now. However, there were some small metal shavings in the bottom, but they are likely from the teeth of the flywheel, bendix, and/or starter, no?
Thanks
BTW, I've ran approximately 3 tanks of fuel through it so far (9.8 gal/tank) and have removed the magneto cover to install an oil block off plate. I didn't notice any fluid in the housing. I guess if it was leaking it would have had something there by now. However, there were some small metal shavings in the bottom, but they are likely from the teeth of the flywheel, bendix, and/or starter, no?
Thanks
Comment