Crankshaft

Dlock94

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Jun 28, 2020
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Ive installed a new vitos 3mm stroked stuffer crank. Is there any expert advise that i need to know about these stroker cranks?
 

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Just check rod to case clearancing i think it's.020. Minimum but double check.
You must use the 2 gaskets and spacer plate. Unless your cylinder and head was setup to run without it.
Oil conecting rod with 2t oil and also crank bearings can be oiled. On each side there is a hole
 
Ok thanks i checked the clearance its good wich is suprising considering the cases are brand new oem from partzilla and i oiled crank and bearings before and after install thanks alot man i cant wait to get this thing back together and see how she rips with my new fmf and 34mm carb and porting and 68mm piston
 
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Nothing like a fresh motor.
Acouple heat cycles and retouqe
Check jetting
Have some fun
 
A good port job and correct jetting will add alot of power.
Day and night difference

Okay yesterday i tried closing the cases but they wont close and the funny thing is its actually stuck together with nice lil gap in them but crank and gear still turn freely
 
Which side did you split case's from?
Clutch side
Or stator side? Stator side has more of a interference fit on inner race to crank
That clutch side.
This is where the crank puller/installer comes in handy
 
Which side did you split case's from?
Clutch side
Or stator side? Stator side has more of a interference fit on inner race to crank
That clutch side.
This is where the crank puller/installer comes in handy

I split them from the clutch side then broke down whole transmission like the paw forks gears and i hated to but i did all new bearings and seals and froze the crank and heated the cases and i didnt even have to use the crank puller but now the transmission is back together i cant get the cases to close
 
I split them from the clutch side then broke down whole transmission like the paw forks gears and i hated to but i did all new bearings and seals and froze the crank and heated the cases and i didnt even have to use the crank puller but now the transmission is back together i cant get the cases to close
Did the main shaft bearing move in right case half when installing the bearings?check that as it is known to move. It should be flush with the case and retaining bracket on the outside.?this has got alot of people.
Or you may have something assembled wrong on main or counter shaft?
 
Ok thanks im going to have to check that i got them apart i should be closing it back up tomorrow after work
 
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