[T2] CHT with Dakota gauge

[c.dreike]

Dave,
Thanks for the A/F ratio information.
At some point I will try some experiments to see what the effects are.

Cheers,
Chris
64DD Kamper Kit


On 8/20/2015 12:55 PM, david raistrick wrote:
> On Thu, Aug 20, 2015 at 12:22 AM, c.dreike <c.dreike at verizon.net> wrote:
>
>> A/F ratio runs at about 12.2:1 at WOT, medium
>> load on freeway runs around 12.6-13:1, foot off throttle at freeway speeds
>> 13-16:1. Maximum spark advance is currently 34 degrees. Thinking about
>> dropping that to 32. Have fully electronic ignition (No Dizzy!!).
>>
>> Anyone have thoughts on the AF ratio's? Or the advance?
>
> threadjack. :)
>
> assuming you're running anything near a stock cam in that upright,
> move that timing max advance to 28.   30 if you -have- to.    34 is
> way high, especially for a bus motor.
>
> something in the 16:1 range for light-throttle (~1/3) should be your
> general target - 12.75-13 range for WOT.
>
> from memory and a quick check of my notes, anyway.   yours should be
> easier to fine tune than my carb. :)
>
> the gist of my notes:
>
> "you should be in the low 14s at idle."
> "the richest you should be is 12.25:1. Ideally 12.75:1 at WOT, I
> consider .5 swing to be the maximum allowable. So a good target WOT is
> 12.5-13:1. 16-17:1 up to 1/3 throttle, 12.75:1 after that."
>
> ...david
>