OzVMX Forum
Marque Remarks => Yamaha => Topic started by: Freakshow on December 08, 2008, 11:53:45 am
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Hey i know we had a debate on main bearings in the suzuki thread about which bearings so im gonna cover it again here.
I need to rebuild about 3 x250 yamaha's Mx/dt bottom ends, do i really need GEnuine crank mains or can subs do the job in the superior Yam motor ;D i will clean and reuse the rods but will also need a big end but will go GEnuine on that one for sure Just in case
with seals, i think i got left hand crank but no right sides.
So question is
Will Subs work ??
And who sells cheap genuine or subs and where can i get me some ????
bearings and seals
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Try Yamaha Pitmans in Adelaide , they have it .
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YEs i know brenton can get me the gens in at a price i did a YDCnet search and the bits are out there, but im asking is there Cheaper sub substitues out there and /or should crank bearing need to be Gen or is a bearing a bearing.
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i,ve used off the shelf mains in one of my 490,s , they actually have the same #as the oem ,BUT one big thing to watch is the radius on the crank where they butt up to , measure the distance to the end of the crank before removing the oldies , then check if u have the same after u fit the newies , (the off the shelf bearings had less chamfer than the oem , on the flywheel side i have used std oil seals , one facing in one facing out , as there was a bit of room , (i couldn,t get the oem ones in time ), on the primary side oem , all the bully,s i have , have over the counter main bearings , sometimes come as sealed units , remove the seals