[Healeys] Tach heat sensitive?

[dcongleton at embarqmail.com (Dallas Congleton)]

Are lights used in one direction and not the other?
  ----- Original Message -----
  From: Tom
  To: Bob Spidell ; dcongleton at embarqmail.com
  Cc: Healey Mail List
  Sent: Thursday, August 18, 2011 12:56 PM
  Subject: Re: [Healeys] Tach heat sensitive?


  It's in my BJ8, so it's electrical.


  Yup, overdrive on at 65mph.


  - Tom


  On Thu, Aug 18, 2011 at 11:44 AM, Bob Spidell <bspidell at comcast.net> wrote:

    Mechanical or electronic tach?


    Bob

    --------------------------------
    Bob Spidell - San Jose, CA


----------------------------------------------------------------------------
    From: "Tom" <ah3000me at gmail.com>
    To: "Healey Mail List" <healeys at autox.team.net>
    Sent: Thursday, August 18, 2011 7:43:55 AM
    Subject: [Healeys] Tach heat sensitive?


    I've noticed that when I drive to work in the morning when it's cool
    (50-60F), my tach shows about 2500 RPM at 65 MPH.  When I return home at
    night when it's warm (80+ F), my tach shows about 3000 RPM at 65 MPH.

    Any ideas about what's going on?

    thanks,

    Tom