Triumph Spitfire 2.5.

Sunday, November 26, 2006

polished crank.

this is the crankshaft i used last time the car was can be seen it has been polished, to help reduce stress risers.the big end oil holes have also been teardropped, and carefully blended in .the crankshaft journals were also polished one thou , to allow for extra oil,aswell as deburring the grind process.this was done by polishing in direction of rotation. i did'nt knife edge the counter weights for fear of inhibiting the balancing task.since, i have been told that a large auto manufacture has tested the bull nose and knife edged crank, bull nose came out on top.


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