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View Full Version : 83-87 YZ 250 Crank interchangable with Tri Z???



1972mercury
04-16-2013, 06:11 PM
I was wondering if the 83-87 YZ 250 Crank is interchangable with a Tri Z found one on ebay looks almost the same? Has anyone ever did a swap like this?

http://www.ebay.com/itm/83-84-YZ250-Crankshaft-Assembly-OEM-YAMAHA-/330797156410?pt=Motorcycles_Parts_Accessories&fits=Year%3A1983|Model%3AYZ250&hash=item4d050c083a&vxp=mtr

Bryan Raffa
04-16-2013, 06:48 PM
83-84 yz will work 85 ,86,87 used a different stator and fly wheel.. they will not inter change with z stator and fly wheel ,,, if you use a yz crank you must use that stator after 85..

you need a crank buddy?:wondering pm me

Mosh
04-16-2013, 07:42 PM
I was wondering if the 83-87 YZ 250 Crank is interchangable with a Tri Z found one on ebay looks almost the same? Has anyone ever did a swap like this?

http://www.ebay.com/itm/83-84-YZ250-Crankshaft-Assembly-OEM-YAMAHA-/330797156410?pt=Motorcycles_Parts_Accessories&fits=Year%3A1983|Model%3AYZ250&hash=item4d050c083a&vxp=mtr Yes I have. If your left side crank journal is good from the OEM Z engine you can press that onto the Yz crank and still run your Z lights and ignition system. If you use the YZ crank az it sits , as stated you will have to run the dirtbike flywheel and stator which has no lighting system

Bryan Raffa
04-16-2013, 11:59 PM
or pm me for a left side,, if you decide to go with yz ,, I have a moto plat,, no lights... :p

no matter what you do .. your at the mercy of your crank tolerances being with in spec , for the crank bearings per side .... buying a crank and throwing a rod on it is nothing .. if the left or right is shot,,,