What did I do wrong... Primary

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Check out the bolts holding the cradle to the crankcase. Hopefully, you didn't wallow out the holes yet.
 
Its 71, only changed parts w/72. I measure against my 72 an its the same.
No wallows!
 
With the inner primary properly tightened to the engine while empty of any other pieces, did you measure the gap between the case and the center fixing stud ? If there is a gap and with the shouldered center nut over torqued you could easily bring the inner case to the swingarm.

Best.
 
With the inner primary properly tightened to the engine while empty of any other pieces, did you measure the gap between the case and the center fixing stud ? If there is a gap and with the shouldered center nut over torqued you could easily bring the inner case to the swingarm.

Best.

+1 - the inner case needs to be shimmed against the centre mounting stud with the crankcase as the reference. Seen a few cracked inner cases through folks not noticing this...
 
With the inner primary properly tightened to the engine while empty of any other pieces, did you measure the gap between the case and the center fixing stud ? If there is a gap and with the shouldered center nut over torqued you could easily bring the inner case to the swingarm.

Best.
Yep, there are SEVERAL detailed threads on this topic, I believe they appear at the bottom of the page. Definitely will pop up if you do a search...
 
Incorrect shims on the hex standoff leads to wallowed out crankcase holes and primary to swingarm contact.

What did I do wrong...  Primary


What did I do wrong...  Primary
 
The inner case won't fit flat to the engine case---before the center stud is even close. (because of the swing arm contact)
 
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If you have the ISOs that use shims for clearance they could easily be positioned to cock the drive train to the left. Lazy Norton mechanics used to, and maybe still do, shim the front ISO on the left and the rear ISO on the right because it is easier than equalizing both sides.

Try loosening the ISOs and see if the inner case fits or, at least, moves in the right direction. If you or the PO converted to the vernier ISO adjusters the adjustment is a snap.

Best.
 
Sort of a PS. Is your swingarm solid to te cradle? With acceleration the swingarm would like to pull to the left,

Best.
 
The inner case won't fit flat to the engine case---before the center stud is even close. (because of the swing arm contact)
Loosen the engine to cradle bolts and see if the swingarm can be pushed to the right. Possibly elongated case holes, per my photo above.
 
Yes, this is initial assembly, this bike has not seen acceleration of any kind. (yet)
My main point is to loosen the ISO bolt & stud and see if the inner case gets any closer to where it should be. If so then have a look at the placement of the ISO shims.

Best.
 
I have fitted a newer style ISO set, so no shims.

Good move.

However.

The new vernier ISOs can be adjusted as well. I suggest that you check the front to back alignment using any number of methods to determine if the wheel centers are in the same plane.

Best.
 
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