I have a dizzy on my mk1 xr2 that has a fixed advance curve . It was set as a fast road curve for use with twin 40s etc . Can any advance curve be timed to any engine ? Current spec is 1660 x flow , standard head , standard carb , 1300 pistons and a fast road cam Problem i am having is its pinking once the second choke is opened and can't seem to get the timing set right . Could it be a combination of fuelling and timing being wrong ?

 

Im afraid i can't be of much help, but a mate of mine is well into mini's and he knows a guy who's the only person to bother seeing about dizzy curves. He does all the custom ones for the mini guys.

I can ask him for some details if you wanna get in touch n see if he can help you out? I know he's into mini's, but a dizzy is a dizzy and they're all made by similar companies and work in the same way.

 

A distributor ignition system is always going to be a compromise of the optimum timing that the engine requires.

Hence the reason for computer controlled engine management systems

But the short answer to your question is yes

Here is a distributor to which I have had the ignition curve modified to my own requirements

 

Sounds like you may have a broken or dislodged bob-weight spring

 

where can i get the advance curve changed to suit my engine ?