[TR] 123 ignition Question

[Jim Henningsen]

Thanks. The dizzy is designed for all British 6 cylinders.  I tuned it down a notch to 30 max advance and it is running well now.  Jim

Sent from my iPad

On Mar 25, 2016, at 11:34 AM, Randall <TR3driver at ca.rr.com> wrote:

>> Not sure what the max 
>> advance was for stock  tr6.  
> 
> According to my book, a 75 TR6 would have a Lucas 41558 dizzy, which reaches a maximum advance of 18-22 degrees at 3500 rpm (at the
> crankshaft).
> 
> That may not be optimum of course, since these were smog motors to begin with (late timing helps reduce NOx emissions), and the
> available fuel is a lot different now than it was 40 years ago.
> 
> Randall
>