Date: Wed, 13 Mar 1996 22:05:13 -0700
From: Jerrold lundgard
Is there an way of removing Norton main bearings without using a clamshell bearing puller? (or as my b. in law suggested, a torch) When installing Superblends in an Atlas, do the shims for crankshaft endplay go between the bearing inner race and the crank, or the outer race and the case? Do I shim one side or both equally?
All the literature I have says "Older cranks (Atlas included) can be easily fitted with Superblends as long as end float is checked (.010" to .024") and shimmed if necessary with Norton shims as required." Does the Superblend bearing on an older crank require shims in every case?
Does any one know what "slight change" was made to the crankshafts stamped 'H' on the timing side crankshaft cheek next to the bearing location, when the change to Superblends was made?
Jerrold
Date: Sat, 16 Mar 1996 01:44:34 -0500
From: Mike Taglieri
>Is there an way of removing Norton main bearings without
>using a clamshell bearing puller? (or as my b. in law suggested,
>a torch). When installing Superblends in an Atlas, do the shims
>for crankshaft endplay go between the bearing inner race and the
>crank, or the outer race and the case? Do I shim one side or both
>equally?
The same kind of bearing puller you need is used to get the rear bearing off the VW bug crankshaft, and it shouldn't be too hard to find someone who has one. Also, you'll only need it once, because the shims go in the case.
However, I wouldn't worry about the shims at all, unless you're going racing. To quote the Commando Service Notes:
"There will be some end float with the double roller-bearing set up which previously was controlled by the ball-bearing in the timing side -- this should be between 10 and 30 thou (0.25 - 0.775mm), but don't worry if it' not, as long as there is some float."
Mike Taglieri
Raul -- '72 Commando Interstate
P.S. Tell your brother-in-law he has to put away that torch when he's
around
Commandos! I don't want to give Pete Snidal any more ideas. . . .