123-TUNE - my experience

[Breen60 (Paul Breen)]

Hey Theo, the below link from earlier post for a 3.8. Expect wouldn’t take much to do same for a 4.2. Paul

Dizzy with Choices

Huff, I have a 123 - the one with the 16 settings per small screwdriver, dizzy out. I have attached the test data from the Jaguar Series 1 Workshop Manual, the curve maps (such as they are, from little 123 book) for the 123 and my graph representing how a couple of the 123 curves overlay the Lucas test data, per manual. IIRC my car is on curve #2. The kneepoints on the 123 are not as pronounced as the mechanical weight “changeover” [IMG_20170820LUCAS3]would have it on the old dizzy. Hope this h…