Alfetta Drive Shaft Balancing Issue, revisited.

[George Graves <gmgraves@xxxxxxxxxxx>]

I was just over at my mechanic's shop and he showed me an official Alfa 
Romeo Service Bulletin #89.1 that shows, incontrovertibly, that Alfa 
used a combination of washers and double-nuts on the giubos (doughnuts) 
to balance the assembly. I've seen this mentioned here before, but I've 
also seen a flurry of counterclaims posted to the effect that this is 
mythology and so much stuff and nonsense. Well, this service bulletin 
should put an end to the debate. The factory DID use a combination of 
different weight washers and sometimes doubled-up on the nuts to get 
the balance right. This also should lay to rest any notions that hose 
clamps on the shaft itself  won't work. If the factory used different 
weights of hardware on the five bolts securing each giubo in order to 
balance them, then any eccentric weight applied to the drive shaft 
after the fact should have an equally balancing effect.


George Graves
'86 GTV-6
now with 3.0 liter 'S' engine
and Power Steering
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