a little ping

[mluck]

after a hour of driving.its starts to ping on acel,not bad,but just enough to bug me..temp runs 180,i have a fuel reg.on the webbers,could it be not enough fuel..

 

[Asa]

if it's lean enough, i do believe that it could cause pinging

 

[CobraSix]

What's your initial and total timing? You may be too advanced.

Slade

 

[mluck]

yea..i backed off the timing a little..took it out for a ride..had a drag with a young'n in a ricer..no ping...

 

[addo]

My guess is heat soak into the carb body, causing a higher incoming charge temperature. Only has to be a smidge and you're in it. It's sort of why the "rule of thumb" for setting timing has you retarding it 2° back from the last place you hear pinging.

Regards, Adam.