Author Topic: Heat Imbalance Between Cylinders  (Read 2664 times)

Offline dpaddock

  • NC, USA
  • Valued Contributor
  • ****
  • Join Date: Jul 2006
  • Posts: 429
  • Karma: 5
Re: Heat Imbalance Between Cylinders
« Reply #15 on: 19.01. 2008 16:08 »
A quick answer re "induction bias" is to swap the carbs.

Another possibility is that both cylinders are not firing at the same point BTDC. Check this yourself. If the cam ring is eccentric with the path of the breaker points, it will cause the points to open at different BTDC's. If eccentricity is found, shim the ring to get it concentric. A degree wheel is essential for this task.
'57 Spitfire

Offline flatdeck

  • A's Good Friend
  • ***
  • Join Date: Jun 2007
  • Posts: 80
  • Karma: 0
Re: Heat Imbalance Between Cylinders
« Reply #16 on: 20.01. 2008 20:15 »
Hi dpaddock,
Should be getting some temp readings Tues or Wed evening so after that we'll know whether we might still have a problem with timing. I'll certainly investigate whether the camring is symmetrical. Thanks for that.
1949 A7 Star Twin
Kent, U.K. then Auckland, N.Z.