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View Full Version : triz490..... triz250 with us490 motor



yota
04-13-2015, 11:31 PM
I need torque and pattern specs for head studs and gasket for my 1983 Yamaha yz490 motor in my triz250? If anybody has this info please help. I know it's a dirtbike motor but it's in a three wheeler so I thought I would try.