[DeTomaso] ZF losses

[Charles Engles]

Dear Chris,


                Has anyone else had this experience?    Well, yes.    During the discussion some time ago there were at least three forum members that had flywheel and rear wheel dyno results on engine before and after installation.  IIRC all the result were in the 20-25% range.    I,too, was surprised, but is was a recurring number from different sources in all HP ranges.


                                   Mystified too,  Chuck Engles
  ----- Original Message ----- 
  From: chris terp 
  To: Charles Engles ; Will Demelo 
  Cc: detomaso at realbig.com 
  Sent: Tuesday, March 25, 2008 7:07 PM
  Subject: Re: [DeTomaso] ZF losses


  Really - 20%?  Has anyone else had this experience?  I think I'll need a blower...or nitrous..or something...

  Chris Terp
  #6751  (finally found the number)

  Charles Engles <cengles at cox.net> wrote:
    Dear Will,


    Some time back there were several postings of engine dyno 
    results on the dyno stand and on a chassis dyno. IIRC the average loss of 
    measured horsepower from the dyno stand to the chassis dyno was about twenty 
    percent loss. .
    Discussion was extensive as to where the twenty percent 
    went: exhaust system restrictions, internal ZF friction, or etc. No 
    consensus was reached except that there is an undeniable difference between 
    the dyno stand and sitting in your Pantera and that the sink for the twenty 
    percent loss contains various potential culprits.

    Warmest regards, Chuck Engles



    ----- Original Message ----- 
    From: "Will Demelo" 
    To: 
    Sent: Sunday, March 23, 2008 7:08 PM
    Subject: [DeTomaso] ZF losses


    > What are the dyno proven losses through a ZF?
    > Will
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