[DeTomaso] Oil Leak Fixed. What Torque?

Himes, Terry (397C) terry.himes at jpl.nasa.gov
Wed Sep 14 16:39:36 EDT 2016


Thats interesting because I did not check the bolts on the valve covers before leaving for the
Fun Rally.  (Pasadena to Los Wages).  I did the run to Mt Charleston, then spent Sunday going
to the Valley of Fire, then back to Pasadena, Sunday night.

Long drives + hot weather EQ loose bolts.    I will add that to my pre-flight check list before the
next trip.


"A Purple Heart proves you were smart enough to hatch a plan,
 stupid enough to try it and lucky enough to survive!"

Terry W. Himes
JPL Jet Propulsion Laboratory
Dawn Spacecraft Team
Rosetta Sequence Team Lead
Phone: (818) 393-6261
Cell:     (818) 653-8213
Fax:     (818) 393-3147
thimes at jpl.nasa.gov<mailto:thimes at jpl.nasa.gov>
🇺🇸

From: DeTomaso <detomaso-bounces at server.detomasolist.com<mailto:detomaso-bounces at server.detomasolist.com>> on behalf of "Joseph F. Byrd, Jr." <byrdjf at embarqmail.com<mailto:byrdjf at embarqmail.com>>
Date: Wednesday, September 14, 2016 1:29 PM
To: 'Pantera Mail List' <detomaso at server.detomasolist.com<mailto:detomaso at server.detomasolist.com>>
Subject: Re: [DeTomaso] Oil Leak Fixed. What Torque?

Calculating torque to provide desired gasket compression was something I
occasionally needed to do in a past life.  However these were large flanges
with special gaskets.  Interesting finding was the torque required to
provide the optimum gasket compression would not provide the bolting force
needed to prevent vibrating loose (or the pieces not being able to provide
structural support).  If the gasket was critical, a compression stop was
added so that the bolt could be torque to their limit without crushing the
gasket

And our "mechanics feel" saying was to torque to the GE procedure (Good
Enough)

Sorry for the ramblings, just reminiscing
Joe

-----Original Message-----
From: DeTomaso [mailto:detomaso-bounces at server.detomasolist.com] On Behalf
Of Larry - Ohio Time
Sent: Wednesday, September 14, 2016 16:03 PM
To: 'Charles McCall'; 'Himes, Terry (397C)'
Cc: detomaso at server.detomasolist.com<mailto:detomaso at server.detomasolist.com>
Subject: Re: [DeTomaso] Oil Leak Fixed. What Torque?

<< I just tighten so it feels tight without over tightening>>

When I asked a similar question in class the teacher told me use "MF"!


"Mechanic's Feel"....as I was told later.


Larry (got the feeling) - Cleveland



-----Original Message-----
From: DeTomaso [mailto:detomaso-bounces at server.detomasolist.com] On Behalf
Of Charles McCall
Sent: Wednesday, September 14, 2016 3:55 PM
To: Himes, Terry (397C)
Cc: detomaso at server.detomasolist.com<mailto:detomaso at server.detomasolist.com>
Subject: Re: [DeTomaso] Oil Leak Fixed. What Torque?

Terry -
I can't answer your specific question as to proper torque, but I can offer
some practical experience.

I remove the valve covers every year as I have solid lifters and I
check/adjust the lash once a year. I just tighten so it feels tight without
overtightening - which I realize is neither a Metric nor Standard unit of
measure - and I don't have leaks. I have blue Fel-pro valve covers, which
allow a certain amount of compression. I just tighten it down fairly snug,
by hand, without overtightening and I have never had problems.

On Wed, Sep 14, 2016 at 9:36 PM, Himes, Terry (397C) <
terry.himes at jpl.nasa.gov<mailto:terry.himes at jpl.nasa.gov>> wrote:

    Hey Pantera Guru's,
    I finally got to my Pantera last night. (work is getting in the way of
    my fun!!)
    Simple fix.  ALL my valve cover bolts were loose.  Every one of them.
    I tightened them all
    but didn't want to over tighten them.  Anyone know what the correct
    torque should be?
    I have roller rockers and the taller Ford Racing valve covers for
    clearance.
    Your thoughts?
    Terry

    "A Purple Heart proves you were smart enough to hatch a plan,

     stupid enough to try it and lucky enough to survive!"

    Terry W. Himes

    JPL Jet Propulsion Laboratory

    Dawn Spacecraft Team

    Rosetta Sequence Team Lead

    Phone: (818) 393-6261

    Cell:     (818) 653-8213

    Fax:     (818) 393-3147

    [1]thimes at jpl.nasa.gov<mailto:thimes at jpl.nasa.gov>

References

    1. mailto:thimes at jpl.nasa.gov

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-------------- next part --------------
   Thats interesting because I did not check the bolts on the valve covers
   before leaving for the
   Fun Rally.  (Pasadena to Los Wages).  I did the run to Mt Charleston,
   then spent Sunday going
   to the Valley of Fire, then back to Pasadena, Sunday night.
   Long drives + hot weather EQ loose bolts.    I will add that to my
   pre-flight check list before the
   next trip.

   "A Purple Heart proves you were smart enough to hatch a plan,

    stupid enough to try it and lucky enough to survive!"

   Terry W. Himes

   JPL Jet Propulsion Laboratory

   Dawn Spacecraft Team

   Rosetta Sequence Team Lead

   Phone: (818) 393-6261

   Cell:     (818) 653-8213

   Fax:     (818) 393-3147

   [1]thimes at jpl.nasa.gov

   From: DeTomaso <[2]detomaso-bounces at server.detomasolist.com> on behalf
   of "Joseph F. Byrd, Jr." <[3]byrdjf at embarqmail.com>
   Date: Wednesday, September 14, 2016 1:29 PM
   To: 'Pantera Mail List' <[4]detomaso at server.detomasolist.com>
   Subject: Re: [DeTomaso] Oil Leak Fixed. What Torque?

   Calculating torque to provide desired gasket compression was something
   I
   occasionally needed to do in a past life.  However these were large
   flanges
   with special gaskets.  Interesting finding was the torque required to
   provide the optimum gasket compression would not provide the bolting
   force
   needed to prevent vibrating loose (or the pieces not being able to
   provide
   structural support).  If the gasket was critical, a compression stop
   was
   added so that the bolt could be torque to their limit without crushing
   the
   gasket
   And our "mechanics feel" saying was to torque to the GE procedure (Good
   Enough)
   Sorry for the ramblings, just reminiscing
   Joe
   -----Original Message-----
   From: DeTomaso [[5]mailto:detomaso-bounces at server.detomasolist.com] On
   Behalf
   Of Larry - Ohio Time
   Sent: Wednesday, September 14, 2016 16:03 PM
   To: 'Charles McCall'; 'Himes, Terry (397C)'
   Cc: [6]detomaso at server.detomasolist.com
   Subject: Re: [DeTomaso] Oil Leak Fixed. What Torque?
   << I just tighten so it feels tight without over tightening>>
   When I asked a similar question in class the teacher told me use "MF"!
   "Mechanic's Feel"....as I was told later.
   Larry (got the feeling) - Cleveland
   -----Original Message-----
   From: DeTomaso [[7]mailto:detomaso-bounces at server.detomasolist.com] On
   Behalf
   Of Charles McCall
   Sent: Wednesday, September 14, 2016 3:55 PM
   To: Himes, Terry (397C)
   Cc: [8]detomaso at server.detomasolist.com
   Subject: Re: [DeTomaso] Oil Leak Fixed. What Torque?
   Terry -
   I can't answer your specific question as to proper torque, but I can
   offer
   some practical experience.
   I remove the valve covers every year as I have solid lifters and I
   check/adjust the lash once a year. I just tighten so it feels tight
   without
   overtightening - which I realize is neither a Metric nor Standard unit
   of
   measure - and I don't have leaks. I have blue Fel-pro valve covers,
   which
   allow a certain amount of compression. I just tighten it down fairly
   snug,
   by hand, without overtightening and I have never had problems.
   On Wed, Sep 14, 2016 at 9:36 PM, Himes, Terry (397C) <
   [9]terry.himes at jpl.nasa.gov> wrote:

       Hey Pantera Guru's,

       I finally got to my Pantera last night. (work is getting in the way
   of

       my fun!!)

       Simple fix.  ALL my valve cover bolts were loose.  Every one of
   them.

       I tightened them all

       but didn't want to over tighten them.  Anyone know what the correct

       torque should be?

       I have roller rockers and the taller Ford Racing valve covers for

       clearance.

       Your thoughts?

       Terry

       "A Purple Heart proves you were smart enough to hatch a plan,

        stupid enough to try it and lucky enough to survive!"

       Terry W. Himes

       JPL Jet Propulsion Laboratory

       Dawn Spacecraft Team

       Rosetta Sequence Team Lead

       Phone: (818) 393-6261

       Cell:     (818) 653-8213

       Fax:     (818) 393-3147

       [1][10]thimes at jpl.nasa.gov

   References

       1. [11]mailto:thimes at jpl.nasa.gov

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References

   1. mailto:thimes at jpl.nasa.gov
   2. mailto:detomaso-bounces at server.detomasolist.com
   3. mailto:byrdjf at embarqmail.com
   4. mailto:detomaso at server.detomasolist.com
   5. mailto:detomaso-bounces at server.detomasolist.com
   6. mailto:detomaso at server.detomasolist.com
   7. mailto:detomaso-bounces at server.detomasolist.com
   8. mailto:detomaso at server.detomasolist.com
   9. mailto:terry.himes at jpl.nasa.gov
  10. mailto:thimes at jpl.nasa.gov
  11. mailto:thimes at jpl.nasa.gov
  12. mailto:DeTomaso at server.detomasolist.com
  13. http://server.detomasolist.com/mailman/listinfo/detomaso
  14. mailto:DeTomaso at server.detomasolist.com
  15. http://server.detomasolist.com/mailman/listinfo/detomaso
  16. mailto:DeTomaso at server.detomasolist.com
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