[DeTomaso] Magnaflux cracks - now what?

Asa Jay Laughton asajay at asajay.com
Tue Nov 8 16:12:29 EST 2016


My opinion....  new block.

Those head bolts go into the water jacket as I recall but that's not the real problem here.  Those are HEAD BOLTS.  So picture this.  The cracks grow under stress and eventually break a piece free.  Now the head bolt no longer has sufficient clamping force to the block and more problems will ensue.

Just me thinking out loud.
Asa



Sent using Jedi Mind Tricks

Larry Finch via DeTomaso <detomaso at server.detomasolist.com> wrote:

>All,
>
>Magnaflux testing of my original block has shown a total of five cracks (LH/RH) out of six possible, as shown in the photo below. Cracks are within the marked white lines. 
>
>Cracks are from the water jacket to the head bolt threads. No cracks running into cylinders.
>
>I had taken note that some of the head bolts showed traces of coolant on them when removed, but no signs of any rust on any of them.
>
>Planned engine build is 383 or 408 hydraulic roller stroker using Scott Cook heads and intake with carburetor.
>
>Do those cracks mean the original block is now history?
>
>In 15 years of ownership I have never heard of Cleveland's exhibiting cracks in this manner.
>
>Seeking the Family's wisdom and advice.
>
>Thanks,
>
>Larry
>
>
>
>
>Sent from me using a magic, handheld electronic gizmo. 
>_______________________________________________
>
>
>Detomaso Email List is not managed by POCA
>Posted emails must not exceed 1.5 Megabytes
>DeTomaso mailing list
>DeTomaso at server.detomasolist.com
>http://server.detomasolist.com/mailman/listinfo/detomaso
>
>To manage your subscription (change email address, unsubscribe, etc.) use the links above.
>
>Members who post to this list grant license to the list to forward any message posted here to all past, current, or future members of the list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages.
-------------- next part --------------
   My opinion....  new block.
   Those head bolts go into the water jacket as I recall but that's not
   the real problem here.  Those are HEAD BOLTS.  So picture this.  The
   cracks grow under stress and eventually break a piece free.  Now the
   head bolt no longer has sufficient clamping force to the block and more
   problems will ensue.
   Just me thinking out loud.
   Asa
   Sent using Jedi Mind Tricks

   Larry Finch via DeTomaso <detomaso at server.detomasolist.com> wrote:
   All,
   Magnaflux testing of my original block has shown a total of five cracks
   (LH/RH) out of six possible, as shown in the photo below. Cracks are
   within the marked white lines.
   Cracks are from the water jacket to the head bolt threads. No cracks
   running into cylinders.
   I had taken note that some of the head bolts showed traces of coolant
   on them when removed, but no signs of any rust on any of them.
   Planned engine build is 383 or 408 hydraulic roller stroker using Scott
   Cook heads and intake with carburetor.
   Do those cracks mean the original block is now history?
   In 15 years of ownership I have never heard of Cleveland's exhibiting
   cracks in this manner.
   Seeking the Family's wisdom and advice.
   Thanks,
   Larry
   Sent from me using a magic, handheld electronic gizmo.
   _______________________________________________
   Detomaso Email List is not managed by POCA
   Posted emails must not exceed 1.5 Megabytes
   DeTomaso mailing list
   DeTomaso at server.detomasolist.com
   http://server.detomasolist.com/mailman/listinfo/detomaso
   To manage your subscription (change email address, unsubscribe, etc.)
   use the links above.
   Members who post to this list grant license to the list to forward any
   message posted here to all past, current, or future members of the
   list. They also grant the list owner permission to maintain an archive
   or approve the archiving of list messages.


More information about the DeTomaso mailing list