It'll depend on the shaft to some extent plus 1 1/8" and 1 1/16" are so close it wouldn't matter that much. One would seal tighter than the other if the seal section is 1 1/16"
Maybe the shaft on an original is different to an aftermarket ? Maybe they did change over the years. Measure the section the seal works on to confirm the size before rebuilding.
If the one from Blanchards is an original then that's a good result for $80 landed.
Colin
'56 Series 1 with homemade welder
'65 Series IIa Dormobile
'70 SIIa GS
'76 SIII 88" (Isuzu C240)
'81 SIII FFR
'95 Defender Tanami
Motorcycles :-
Vincent Rapide, Panther M100, Norton BIG4, Electra & Navigator, Matchless G80C, Suzuki SV650
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