Tuning TZR 250 saturday, disaster day!
Tuning the Yamaha TZR 250 dragbike. Well, you can´t win them all =) I need to somehow upgrade the crankshaft, i have diagnosed it after filming this to the big end on the right rod gave in. This was an OEM crankshaft and it has been used and abused i can´t ask more of it. Cylinder hasn´t even a smallest scratch. So, upgrade crank to TZ bearings in bigend and get rid of the axial washers might do the trick. Bearings for taking more load, and no washers to improve cooling and lubrication. Always new projects =) The viewing ratio became odd in this video, i dunno what i did wrong. But, it´ll have to do for you guys =)
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