Re: Alfa Crankshaft Nut

["John Hertzman" <johnhertzman@domain.elided>]

I think Russ and I are in agreement, but my meaning may not have been clear
to him and then perhaps not to others. Certainly the crank snouts are the
same, and certainly either pulley and corresponding nut will fit any 105
crankshaft, and there would be no problem using the pulley and nut of a
Spica engine on either a carbureted engine or a Bosch-injected engine, but
fitting a pulley from either a carbureted engine or a Bosch-injected engine
to a Spica-injected engine would not result in a well-running Spica-injected
engine. It is in that sense that I meant that the pulleys and nuts were not
interchangeable: yes one way, no the other way. It sure would solve the
problem of premature Spica belt breakage, though.

Cheers

John
----- Original Message -----
From: <AlfaNeely@domain.elided>
To: <alfa@domain.elided>; "John Hertzman" <johnhertzman@domain.elided>
Sent: Thursday, June 13, 2002 2:11 PM
Subject: Alfa Crankshaft Nut


> In a message dated Mon, 10 Jun 2002  8:45:16 PM Eastern Daylight Time,
owner-alfa-digest@domain.elided writes:
>
> >
> > It follows then that Russ is not entirely correct in writing "The
crankshaft
> > pulley / harmonic balancers can be interchanged if you change the nut at
the
> > same time." The Spica pulley and closed nut could be used
> > on a non-Spica car,
> > but going the other way would be difficult.
> >
> > Cheers
> >
> > John H.
>
>     Nope, the crankshaft snouts are the same.  I recently put a Spica
crank in a Bosch engine.  Only the pulley and nut seem to differ in my
experience and they seem interchangeable both was.
>     Interesting that the early Euro cars had the open nut accepting a 36
mm socket.  The Bosch cars definitely went back to that.  So I guess my
earlier statement that if you can see the threads on the end of the crank,
it will take a 36 mm socket.  It not, then it is 38 mm.
>
>      And, yes, I am way behind in my reading.  As I am off to race the new
track near Omaha this weekend, I may just have to skip a week's worth of
digests.  And then there is the two weeks I will spend Californicating in
early July...
>
> Ciao,
> Russ Neely
> Oklahoma City
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