[DeTomaso] who has experience with Fontana blocks?

[B Hower]

IMHO, 

I would say the leak is at the corner of intake manifold where manifold fits to head. Some intakes without a gasket will have a bigger gap between block and intake than any gasket supplied with intake gasket set. And corner where block, head, and intake meet is usually not a perfect fit, calling for some good silicone sealant. Some people use only silicone at ends of intake. 

I have drilled into the block at 3 points along that area, and installed roll pins. Pins do not reach intake if installed without any gaskets. Then I put holes in the cork gaskets to match that location. The pins keep gasket form getting miss aligned. ( The OEM intake on OEM heads have been known to squeeze the rubber gasket enough to split it. )  I then use some silicone if gap from gasket to intake is small ... It seems that I have actually used double gasket to fill gap. But still corners need some silicone no mater how well you think the fit is.

Bud #3400 ( Drive it like there is no tomorrow -- for there may not be ! ) 

    On Tuesday, May 5, 2020, 4:59:00 PM CDT, Steven Edwards1969Dart <gsedwards at cox.net> wrote:  
 
   I have been chasing an oil leak on a Fontana. I clean the engine and
  ran it several times and took it for some short drives.

  The leak looked at first to becoming from the head gasket at the right
  motor mount. The motor mount had oil in the deep section.

    After the drive today I had some oil at the head gasket  on the block
  side, at the rear of the engine in the corner . See picture.

  I am at a lost as to why the head gasket would leak in this area,
  wounding if the block maybe cracked?  Or is it the gasket?


  [cid:image003.jpg at 01D622FE.6280BCD0]



  Steven Edwards
_______________________________________________


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 --------------
   IMHO,
   I would say the leak is at the corner of intake manifold where manifold
   fits to head. Some intakes without a gasket will have a bigger gap
   between block and intake than any gasket supplied with intake gasket
   set. And corner where block, head, and intake meet is usually not a
   perfect fit, calling for some good silicone sealant. Some people use
   only silicone at ends of intake.
   I have drilled into the block at 3 points along that area, and
   installed roll pins. Pins do not reach intake if installed without any
   gaskets. Then I put holes in the cork gaskets to match that location.
   The pins keep gasket form getting miss aligned. ( The OEM intake on OEM
   heads have been known to squeeze the rubber gasket enough to split it.
   )  I then use some silicone if gap from gasket to intake is small ...
   It seems that I have actually used double gasket to fill gap. But still
   corners need some silicone no mater how well you think the fit is.
   Bud #3400 ( Drive it like there is no tomorrow -- for there may not be
   ! )

   On Tuesday, May 5, 2020, 4:59:00 PM CDT, Steven Edwards1969Dart
   <gsedwards at cox.net> wrote:
     I have been chasing an oil leak on a Fontana. I clean the engine and
     ran it several times and took it for some short drives.
     The leak looked at first to becoming from the head gasket at the
   right
     motor mount. The motor mount had oil in the deep section.
       After the drive today I had some oil at the head gasket  on the
   block
     side, at the rear of the engine in the corner . See picture.
     I am at a lost as to why the head gasket would leak in this area,
     wounding if the block maybe cracked?  Or is it the gasket?
     [cid:[1]image003.jpg at 01D622FE.6280BCD0]
     Steven Edwards
   _______________________________________________
   Detomaso Email List is not managed by POCA
   Posted emails must not exceed 1.5 Megabytes
   DeTomaso mailing list
   [2]DeTomaso at server.detomasolist.com
   [3]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.

References

   1. mailto:image003.jpg at 01D622FE.6280BCD0
   2. mailto:DeTomaso at server.detomasolist.com
   3. http://server.detomasolist.com/mailman/listinfo/detomaso