ABA block and crank ?'s

[rapieper at yahoo.com (Ron Pieper)]

--- "S. Coleman" <deadbolt@mindspring.com> wrote:
> ...they have some blue-ish marks on
> them like they were heat treated maybe.....  any ideas.   (I also wonder if
> they were "heated" while the car was running?)

There should be no blue marks - that indicates excessive heat, and you can bet that the marks
weren't there from the factory.

> Lastly, can someone confirm what the difference in looks (as in
> what to look for) is between a forged crank and a cast crank.  My boss and I
> are arguing that fact as well as why one is stronger than the other.

In general terms, the cast crank will have a part line that is thin.  The forged cranks part line
will be thicker, maybe 1/4" or a little more.  

=====
Cheapass Ron
'81 Scirocco S - "Victor Jr."  7SM
(2.0L 16V, GL 4-speed w/ Quaife installed, Megasquirt coming...)

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