[s-cars] crankshaft rebuild

[calvinlc@earthlink.net]

That could be, Dave.  Certain cranks don't have the right surface, actually
to more accurately say it, the material underneath the surface is not hard
enough to be exposed as the surface the bearings "ride on."  It wouldn't
surprise me, but if the material is OK then it certainly would be cheaper to
turn it.
--Calvin

  -----Original Message-----
  From: djdawson2 at aol.com [mailto:djdawson2 at aol.com]
  Sent: Friday, November 04, 2005 10:08 AM
  To: calvinlc at earthlink.net; yumyjager at gmail.com;
giannandrea at mindspring.com
  Cc: s-car-list at audifans.com
  Subject: Re: [s-cars] crankshaft rebuild


   I asked because when I rebuilt my engine, I sent the crank in to have it
looked over... with the instructions to "turn if needed."  The message came
back that there could be no turning of those crankshafts.  I didn't pursue
the "why" of their response, because they said it was fine anyway.

  So I guess I'm curious if it is really even an option.  I had made the
assumption that it was, but my shop said no.  So was it just them, or can
you really not turn a 2.2 crank?

  Dave

  -----Original Message-----
  From: calvinlc at earthlink.net
  To: djdawson2 at aol.com; yumyjager at gmail.com; giannandrea at mindspring.com
  Cc: s-car-list at audifans.com
  Sent: Fri, 4 Nov 2005 08:37:51 -0700
  Subject: RE: [s-cars] crankshaft rebuild


  I think the problem here is not the lack of machine shops who can do it,
it's the lack of demand for the service.  I just don't hear of many Audi
engines needing this type of internal surgery before the rest of the car has
long ago fallen apart.  A crank is a crank, as long as you know what the
metal treatment and manufacturing process (i.e. cast or forged, how was it
hardened, if at all) a good machine shop can easily figure out how to turn
it properly.  The only problem is there isn't much experience with BTDTs on
something like this so that is a risk....but given the cost advantage I
would be tempted to at least attempt it, provided you can find someone with
the proper bearing sizes to support the end product.
  --Calvin