Crank markings

[BombThreat]

I have a 73 stamped on the webs and 82M on the rods. Are those standard size rods and does that equal 4mm stroke? (701 crank)

 

[robertg]

I would guess 5mm, don't know about the rods.

 

[crammit442]

I have a 73 stamped on the webs and 82M on the rods. Are those standard size rods and does that equal 4mm stroke? (701 crank)

Don't know about the rod marking but 73 would be a 5mm stroker.

 

[SUPERTUNE]

Should be a 5mm stroker crank, It's most likely a older rad or a newer crankworks stroker crank as their both stamped with the stroke on them (73mm). The 82m marking on the rod is a stock Yamaha 125mm lenth rod. Use a big bore 85mm piston and you have an 828cc engine!

 

[Speedfreak]

Did you get that from Mark at Full Throttle??... sounds like mine which is still missing...

 

[BombThreat]

No, ive had it for while from a ski I got.