RE: milling heads
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RE: milling heads

I would imagine there is a certain amount that you can "get away with",
depending on the castings.  Best thing to do is probably measure across the
valley port-floor to port floor, then measure your intake to see how far off
you are (assuming gasket matched parts).

SC

-----Original Message-----
From: ed keaton [mailto:gtx69@xxxxxxx] 
Sent: Monday, February 22, 2010 10:24 AM
To: 1962to1965mopars@xxxxxxxxxx
Subject: Re: milling heads



Steven thanks that is what I need to know.I had heard years ago that up to
.040 you don't have to remove anything from the intake side of the head.I
guess that was an old wives tail.
  ----- Original Message -----
  From: Steven Charette<mailto:stevec@xxxxxxxxxxxxxxxxxxxx>
  To: 1962to1965mopars@xxxxxxxxxx<mailto:1962to1965mopars@xxxxxxxxxx>
  Sent: Monday, February 22, 2010 10:07 AM
  Subject: RE: milling heads



  Ed,
  Okay.  Without having a set of 452's in front of me I recall they
  are open chamber.  Since they were used on 440's I'll use 4.32" as the
  diameter of the chamber (you can re-run the math by substituting the
correct
  diameter in the formula).  

  The formula I'll use to calculate the volume (there are others) is
  Bore X Bore X .7854 X Height.  So...

  4.32 X 4.32 = 18.6624 square inches. 

  This would calculate the area of a square, so to figure the area of
  the circle inscribed within the square, we multiply by .7854 to give us
the
  area of this flat "cylinder".

  18.6624 X .7854 = 14.6575 square inches 

  We want to calculate the volume of .010" of this cylinder, so...

  14.6575 x .010 = .146575 cubic inches.  1 cubic inch - 16.387 cubic
  centimeters (cc) so if we multiply that out...

  .146575 cu in x 16.387 = 2.4 cubic centimeters.

  So for every .010" you mill a head with a chamber diameter of 4.32",
  you decrease the volume of the chamber by 2.4 cc. To decrease the volume
4cc
  you would remove 2.4 X 1.666 (to infinity).  

  So to verify our calculations we'll plug the numbers into the
  formula above:

  4.32 X 4.32 X .7854 X .0166666 = .2442898 cubic inches x 16.387 =
  4.003 cc 

  So to reduce your chamber volume by 4cc, you would remove
  approximately .016" from the head surface.  This works until you get into
  the radius or completely remove the open quench area then some additional
  figuring is required.

  BTW, if you remove .016" from the head surface, don't forget to
  remove 1.6 (1.6 being the number of .010" units we've removed from the
head
  surface) X the .0123" number from the intake surface, or .01968" from the
  intake surface.

  I don't know about you guys but if they'd taught math this way in
  high school, I might have actually gone to class!

  SC



  -----Original Message-----
  From: ed keaton [mailto:gtx69@xxxxxxx]
  Sent: Friday, February 19, 2010 8:18 PM
  To: 1962to1965mopars@xxxxxxxxxx<mailto:1962to1965mopars@xxxxxxxxxx>
  Subject: Re: milling heads



  Yes I am talking about the 452 heads .Metal gasket is about .019
felpro.039
    ----- Original Message -----
    From: Gary<mailto:mopar413@xxxxxxxxxxx<mailto:mopar413@xxxxxxxxxxx>>
    To:
1962to1965mopars@xxxxxxxxxx<mailto:1962to1965mopars@xxxxxxxxxx<mailto:1962to
1965mopars@xxxxxxxxxx%3Cmailto:1962to1965mopars@xxxxxxxxxx>>
    Cc: MO ( Steve
Mick)<mailto:micher@xxxxxxxxxxxxxxx<mailto:micher@xxxxxxxxxxxxxxx>>
    Sent: Friday, February 19, 2010 7:41 PM
    Subject: Re: milling heads



    Don't forget that the head gasket also will determine cc.  Metal gasket
  will make more compression.  Felpro will lower compression.  that will
also
  affect cc.
    ---- "MO ( Steve Mick)"
 
<micher@xxxxxxxxxxxxxxx<mailto:micher@xxxxxxxxxxxxxxx<mailto:micher@frontier
net.net%3Cmailto:micher@xxxxxxxxxxxxxxx>>> wrote: 
    >
    > I am assuming we are talking milling the heads and not the deck?  I
too
    > would like to know the answer to  to this question as I have the 452
  heads
    > and would like to go to about  86-88
    > cc's...................................MO
    > ----- Original Message -----
    > From: "ed keaton"
<gtx69@xxxxxxx<mailto:gtx69@xxxxxxx<mailto:gtx69@xxxxxxx%3Cmailto:gtx69@msn.
com>>>
    > To:
<1962to1965mopars@xxxxxxxxxx<mailto:1962to1965mopars@xxxxxxxxxx<mailto:1962t
o1965mopars@xxxxxxxxxx%3Cmailto:1962to1965mopars@xxxxxxxxxx>>>
    > Sent: Friday, February 19, 2010 3:54 PM
    > Subject: Re: milling heads
    >
    >
    > >
    > >
    > > I am milling a set of 452's.Had the heads cc they checked out at 92
cc
    > > need to get down to 88 cc.That is why I need to know how much does
  each
    > > .010 milled off reduce the cc by.
    > >  ----- Original Message -----
    > >  From: Steven
 
Charette<mailto:stevec@xxxxxxxxxxxxxxxxxxxx<mailto:stevec@xxxxxxxxxxxxxxxxxx
<mailto:stevec@xxxxxxxxxxxxxxxxxxxx%3Cmailto:stevec@xxxxxxxxxxxxxxxxxx>
  et>>
    > >  To:
 
1962to1965mopars@xxxxxxxxxx<mailto:1962to1965mopars@xxxxxxxxxx<mailto:1962to
<mailto:1962to1965mopars@xxxxxxxxxx%3Cmailto:1962to1965mopars@xxxxxxxxxx%3Cm
ailto:1962to>
 
1965mopars@xxxxxxxxxx%3Cmailto:1962to1965mopars@xxxxxxxxxx<mailto:1965mopars
@topica.com%3Cmailto:1962to1965mopars@xxxxxxxxxx>>>
    > >  Sent: Friday, February 19, 2010 11:39 AM
    > >  Subject: RE: milling heads
    > >
    > >
    > >
    > >  Ed,
    > >  What heads are you milling?  It depends on if the heads are open or
    > >  closed chamber - milling an open chamber head will reduce the
chamber
    > > volume
    > >  by more than milling a closed chamber head.
    > >
    > >  Without crunching the numbers (I can get you the formulas if
needed)
    > >  the old DC performance Bible states that (and I'll paraphrase)
  milling
    > > the
    > >  late model open chamber heads .060" increases compression 1.5
points,
  so
    > >  .010" would get you roughly 1/4 point of compression.  On the older
    > > closed
    > >  chamber heads ('62-65 vintage) .060" only gets you about 1/2 point,
  or
    > > .08
    > >  points at .010"
    > >
    > >  For greater accuracy you would have to calculate the area of the
    > >  chamber at the head surface, then calculate for volume at .010".
    > >
    > >  For big blocks (can't say whether the angles are the same on
others)
    > >  mill the intake face .0123" for each .010" milled from the deck
  surface.
    > >
    > >  SC
    > >
    > >  -----Original Message-----
    > >  From: ed keaton [mailto:gtx69@xxxxxxx]
    > >  Sent: Wednesday, February 17, 2010 9:04 PM
    > >  To: 1962to1965mopars
    > >  Subject: milling heads
    > >
    > >
    > >
    > >  Any one know for every 010 milled off is equal to how many cc's
.How
  much
    > >  off intake size of the head per 010 also?
    > >  [Non-text portions of this message have been removed]
    > >
    > >
    > >  ----
    > >  Please address private mail -- mail of interest to only one person
--
    > >  directly to that person.  I.e., send parts/car transactions and
    > > negotiations
    > >  as well as other personal messages only to the intended recipient,
  not to
    > >  the Clubhouse public address. This practice will protect your
  privacy,
    > >  reduce the total volume of mail and fine tune the content signal to
  Mopar
    > >  topic.  Thanks!
    > >
    > >  1962 to 1965 Mopar Clubhouse Discussion Guidelines:
    > >
    > >
 
http://www.1962to1965mopar.ornocar.org/mletiq.html<http://www.1962to1965mopa
<http://www.1962to1965mopar.ornocar.org/mletiq.html%3Chttp://www.1962to1965m
opa>
 
r.ornocar.org/mletiq.html<http://www.1962to1965mopar.ornocar.org/mletiq.html
<http://www.1962to1965mopar.ornocar.org/mletiq.html>
  %3Chttp://www.1962to1965mopar.ornocar.org/mletiq.html>>
    > > and
    > >
    > >
 
http://www.1962to1965mopar.ornocar.com/general_disclaimer.html<http://www.19
<http://www.1962to1965mopar.ornocar.com/general_disclaimer.html%3Chttp://www
.19>
 
62to1965mopar.ornocar.com/general_disclaimer.html<http://www.1962to1965mopar
<http://www.1962to1965mopar/>
 
.ornocar.com/general_disclaimer.html%3Chttp://www.1962to1965mopar.ornocar.co
  m/general_disclaimer.html>>.
    > >
    > >
    > >  ----
    > >  Please address private mail -- mail of interest to only one person
--
    > > directly to that person.  I.e., send parts/car transactions and
    > > negotiations as well as other personal messages only to the intended
    > > recipient, not to the Clubhouse public address. This practice will
  protect
    > > your privacy, reduce the total volume of mail and fine tune the
  content
    > > signal to Mopar topic.  Thanks!
    > >
    > >  1962 to 1965 Mopar Clubhouse Discussion Guidelines:
    > >
    > >
 
http://www.1962to1965mopar.ornocar.org/mletiq.html<http://www.1962to1965mopa
<http://www.1962to1965mopar.ornocar.org/mletiq.html%3Chttp://www.1962to1965m
opa>
 
r.ornocar.org/mletiq.html<http://www.1962to1965mopar.ornocar.org/mletiq.html
<http://www.1962to1965mopar.ornocar.org/mletiq.html>
  %3Chttp://www.1962to1965mopar.ornocar.org/mletiq.html>>
    > > and
    > >
 
http://www.1962to1965mopar.ornocar.com/general_disclaimer.html<http://www.19
<http://www.1962to1965mopar.ornocar.com/general_disclaimer.html%3Chttp://www
.19>
 
62to1965mopar.ornocar.com/general_disclaimer.html<http://www.1962to1965mopar
<http://www.1962to1965mopar/>
 
.ornocar.com/general_disclaimer.html%3Chttp://www.1962to1965mopar.ornocar.co
  m/general_disclaimer.html>>.
    > >
    > >
    > >
    > >
    > > [Non-text portions of this message have been removed]
    > >
    > >
    > > ----
    > > Please address private mail -- mail of interest to only one person
--
    > > directly to that person.  I.e., send parts/car transactions and
    > > negotiations as well as other personal messages only to the intended
    > > recipient, not to the Clubhouse public address. This practice will
  protect
    > > your privacy, reduce the total volume of mail and fine tune the
  content
    > > signal to Mopar topic.  Thanks!
    > >
    > > 1962 to 1965 Mopar Clubhouse Discussion Guidelines:
    > >
 
http://www.1962to1965mopar.ornocar.org/mletiq.html<http://www.1962to1965mopa
<http://www.1962to1965mopar.ornocar.org/mletiq.html%3Chttp://www.1962to1965m
opa>
  r.ornocar.org/mletiq.html> and
    > >
 
http://www.1962to1965mopar.ornocar.com/general_disclaimer.html<http://www.19
<http://www.1962to1965mopar.ornocar.com/general_disclaimer.html%3Chttp://www
.19>
  62to1965mopar.ornocar.com/general_disclaimer.html>.
    > >
    > >
    > >
    >
    >
    > ----
    > Please address private mail -- mail of interest to only one person --
  directly to that person.  I.e., send parts/car transactions and
negotiations
  as well as other personal messages only to the intended recipient, not to
  the Clubhouse public address. This practice will protect your privacy,
  reduce the total volume of mail and fine tune the content signal to Mopar
  topic.  Thanks!
    >
    > 1962 to 1965 Mopar Clubhouse Discussion Guidelines:
    >
 
http://www.1962to1965mopar.ornocar.org/mletiq.html<http://www.1962to1965mopa
<http://www.1962to1965mopar.ornocar.org/mletiq.html%3Chttp://www.1962to1965m
opa>
  r.ornocar.org/mletiq.html> and
 
http://www.1962to1965mopar.ornocar.com/general_disclaimer.html<http://www.19
<http://www.1962to1965mopar.ornocar.com/general_disclaimer.html%3Chttp://www
.19>
  62to1965mopar.ornocar.com/general_disclaimer.html>. 
    >
    > 


    ----
    Please address private mail -- mail of interest to only one person --
  directly to that person.  I.e., send parts/car transactions and
negotiations
  as well as other personal messages only to the intended recipient, not to
  the Clubhouse public address. This practice will protect your privacy,
  reduce the total volume of mail and fine tune the content signal to Mopar
  topic.  Thanks!

    1962 to 1965 Mopar Clubhouse Discussion Guidelines:
   
 
http://www.1962to1965mopar.ornocar.org/mletiq.html<http://www.1962to1965mopa
<http://www.1962to1965mopar.ornocar.org/mletiq.html%3Chttp://www.1962to1965m
opa>
  r.ornocar.org/mletiq.html> and
 
http://www.1962to1965mopar.ornocar.com/general_disclaimer.html<http://www.19
<http://www.1962to1965mopar.ornocar.com/general_disclaimer.html%3Chttp://www
.19>
  62to1965mopar.ornocar.com/general_disclaimer.html>. 



  [Non-text portions of this message have been removed]


  ----
  Please address private mail -- mail of interest to only one person --
  directly to that person.  I.e., send parts/car transactions and
negotiations
  as well as other personal messages only to the intended recipient, not to
  the Clubhouse public address. This practice will protect your privacy,
  reduce the total volume of mail and fine tune the content signal to Mopar
  topic.  Thanks!

  1962 to 1965 Mopar Clubhouse Discussion Guidelines:
 
http://www.1962to1965mopar.ornocar.org/mletiq.html<http://www.1962to1965mopa
r.ornocar.org/mletiq.html> and
 
http://www.1962to1965mopar.ornocar.com/general_disclaimer.html<http://www.19
62to1965mopar.ornocar.com/general_disclaimer.html>. 


  ----
  Please address private mail -- mail of interest to only one person --
directly to that person.  I.e., send parts/car transactions and negotiations
as well as other personal messages only to the intended recipient, not to
the Clubhouse public address. This practice will protect your privacy,
reduce the total volume of mail and fine tune the content signal to Mopar
topic.  Thanks!

  1962 to 1965 Mopar Clubhouse Discussion Guidelines:
 
http://www.1962to1965mopar.ornocar.org/mletiq.html<http://www.1962to1965mopa
r.ornocar.org/mletiq.html> and
http://www.1962to1965mopar.ornocar.com/general_disclaimer.html<http://www.19
62to1965mopar.ornocar.com/general_disclaimer.html>. 




[Non-text portions of this message have been removed]


----
Please address private mail -- mail of interest to only one person --
directly to that person.  I.e., send parts/car transactions and negotiations
as well as other personal messages only to the intended recipient, not to
the Clubhouse public address. This practice will protect your privacy,
reduce the total volume of mail and fine tune the content signal to Mopar
topic.  Thanks!

1962 to 1965 Mopar Clubhouse Discussion Guidelines:
http://www.1962to1965mopar.ornocar.org/mletiq.html and
http://www.1962to1965mopar.ornocar.com/general_disclaimer.html. 


----
Please address private mail -- mail of interest to only one person -- directly to that person.  I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic.  Thanks!

1962 to 1965 Mopar Clubhouse Discussion Guidelines:
http://www.1962to1965mopar.ornocar.org/mletiq.html and http://www.1962to1965mopar.ornocar.com/general_disclaimer.html.
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