[DeTomaso] Cylinder Heads leaking

Fri Nov 20 19:52:12 EST 2015

I just buy a roll of gasket material and cut my own. Never any leaks and easy to do.Mark 

    On Friday, November 20, 2015 7:30 PM, sean mundy <seanmundy at hotmail.com> wrote:

   Thank you Mike.  That explains a possible oil leak being sucked in via
  a leak but that wouldn't account for me hearing air leaking when
  pumping air into the cylinder with both valves closed?  I have CHI
  heads and CHI intake and I'm using their specific intake gasket set. I
  don't think the stock gasket is going to match up all that well.

  > CC: detomaso at poca.com
  > From: MikeLDrew at aol.com
  > Subject: Re: [DeTomaso] Cylinder Heads leaking
  > Date: Fri, 20 Nov 2015 16:12:19 -0800
  > To: seanmundy at hotmail.com
  >
  > Sean,
  >
  > This is a VERY common problem. Your intake manifold gasket has failed
  and is leaking on the bottom edge, allowing oil to be sucked from the
  valley under the intake into one or more cylinders.
  >
  > Many people have made the mistake of using Fel-Pro 'Print-o-seal'
  intake gaskets. These things are notorious for failing; so much so that
  you can find numerous references to them on Internet forums for all
  sorts of cars, where they are commonly called 'Print-o-leak' gaskets!
  >
  > I happen to favor the stock-style valley pan gasket, Fel pro MS96012.
  If you follow the installation instructions to the letter, these seal
  fine with the added advantage of cooling the underside of the intake by
  shielding it from oil splash.
  >
  > There is a story with photos about this chronic problem in a recent
  PCNC newsletter; you can read it by accessing the website at
  www.panteraclubnorcal.com
  >
  > I've helped repair two local cars with this problem in the past few
  months and know of a third that is awaiting repair....
  >
  > Mike
  >
  >
  >
  > Sent from my iPhone
  >
  > On Nov 20, 2015, at 15:42, sean mundy <seanmundy at hotmail.com> wrote:
  >
  > > After a long hiatus, I am back working on my Pantera. Latest issue
  is
  > > the engine is burning oil at about a quart every 300 miles.
  > > My spark plugs don't look horrible but something is going on. I re
  > > torqued the cylinder heads and intake manifold and made sure my pc
  > > valve was working. I looked at my intake valves with an
  > > inspection camera and there is a lot of carbon buildup but I only
  have
  > > about 2k miles on the new aluminum heads. I thought my valve seals
  may
  > > be leaking so I started removing the rockers on one side and tried
  to
  > > replace the Teflon valve seals on #8cyl with new Comp Cam Viton
  seals.
  > > I connected compressed air to the #8 spark plug hole to hold the
  valve
  > > up so I could remove the spring. I don't think you are supposed to
  > > but I can hear air leaking from somewhere inside the engine. It
  seems
  > > like I can feel a little air coming out of the top of the intake
  > > manifold with my carb removed. I can't trace the air leak.
  > > Need some tips on what steps I should take at this point. Thanks,
  Sean
  > > _______________________________________________
  > >
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-------------- next part --------------
   I just buy a roll of gasket material and cut my own. Never any leaks
   and easy to do.
   Mark
   On Friday, November 20, 2015 7:30 PM, sean mundy
   <seanmundy at hotmail.com> wrote:
     Thank you Mike.  That explains a possible oil leak being sucked in
   via
     a leak but that wouldn't account for me hearing air leaking when
     pumping air into the cylinder with both valves closed?  I have CHI
     heads and CHI intake and I'm using their specific intake gasket set.
   I
     don't think the stock gasket is going to match up all that well.
     > CC: [1]detomaso at poca.com
     > From: [2]MikeLDrew at aol.com
     > Subject: Re: [DeTomaso] Cylinder Heads leaking
     > Date: Fri, 20 Nov 2015 16:12:19 -0800
     > To: [3]seanmundy at hotmail.com
     >
     > Sean,
     >
     > This is a VERY common problem. Your intake manifold gasket has
   failed
     and is leaking on the bottom edge, allowing oil to be sucked from the
     valley under the intake into one or more cylinders.
     >
     > Many people have made the mistake of using Fel-Pro 'Print-o-seal'
     intake gaskets. These things are notorious for failing; so much so
   that
     you can find numerous references to them on Internet forums for all
     sorts of cars, where they are commonly called 'Print-o-leak' gaskets!
     >
     > I happen to favor the stock-style valley pan gasket, Fel pro
   MS96012.
     If you follow the installation instructions to the letter, these seal
     fine with the added advantage of cooling the underside of the intake
   by
     shielding it from oil splash.
     >
     > There is a story with photos about this chronic problem in a recent
     PCNC newsletter; you can read it by accessing the website at
     www.panteraclubnorcal.com
     >
     > I've helped repair two local cars with this problem in the past few
     months and know of a third that is awaiting repair....
     >
     > Mike
     >
     >
     >
     > Sent from my iPhone
     >
     > On Nov 20, 2015, at 15:42, sean mundy <[4]seanmundy at hotmail.com>
   wrote:
     >
     > > After a long hiatus, I am back working on my Pantera. Latest
   issue
     is
     > > the engine is burning oil at about a quart every 300 miles.
     > > My spark plugs don't look horrible but something is going on. I
   re
     > > torqued the cylinder heads and intake manifold and made sure my
   pc
     > > valve was working. I looked at my intake valves with an
     > > inspection camera and there is a lot of carbon buildup but I only
     have
     > > about 2k miles on the new aluminum heads. I thought my valve
   seals
     may
     > > be leaking so I started removing the rockers on one side and
   tried
     to
     > > replace the Teflon valve seals on #8cyl with new Comp Cam Viton
     seals.
     > > I connected compressed air to the #8 spark plug hole to hold the
     valve
     > > up so I could remove the spring. I don't think you are supposed
   to
     > > but I can hear air leaking from somewhere inside the engine. It
     seems
     > > like I can feel a little air coming out of the top of the intake
     > > manifold with my carb removed. I can't trace the air leak.
     > > Need some tips on what steps I should take at this point. Thanks,
     Sean
     > > _______________________________________________
     > >
     > > Detomaso Forum Managed by POCA
     > > Posted emails must not exceed 1.5 Megabytes
     > > DeTomaso mailing list
     > > [5]DeTomaso at poca.com
     > > [6]http://poca.com/mailman/listinfo/detomaso_poca.com
     > >
     > > To manage your subscription (change email address, unsubscribe,
     etc.) use the links above.
   _______________________________________________
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References

   1. mailto:detomaso at poca.com
   2. mailto:MikeLDrew at aol.com
   3. mailto:seanmundy at hotmail.com
   4. mailto:seanmundy at hotmail.com
   5. mailto:DeTomaso at poca.com
   6. http://poca.com/mailman/listinfo/detomaso_poca.com
   7. mailto:DeTomaso at poca.com
   8. http://poca.com/mailman/listinfo/detomaso_poca.com