Ping under WOT
#1
Ping under WOT
Hey all,
I just removed the points and installed a MSD Blaster 2 coil and Pertronix ignitor (Lobe sensor) in my '69 Ninety-Eight with a 455.
Car starts better and runs fine, except under WOT. If I keep it to 1/2 pedal or less, no problem at all. If I get on it (WOT) at any RPM I hear a slight pinging. I didn't change my timing when I installed the Pertronix.
From what I read the vacuum advance should not be an issue - so my question is: do I need to change the mechanical advance springs, or just lower the initial timing? (I read that lowering initial timing should fix it, but at the expense of power and MPG)
Thanks in advance,
Karl
I just removed the points and installed a MSD Blaster 2 coil and Pertronix ignitor (Lobe sensor) in my '69 Ninety-Eight with a 455.
Car starts better and runs fine, except under WOT. If I keep it to 1/2 pedal or less, no problem at all. If I get on it (WOT) at any RPM I hear a slight pinging. I didn't change my timing when I installed the Pertronix.
From what I read the vacuum advance should not be an issue - so my question is: do I need to change the mechanical advance springs, or just lower the initial timing? (I read that lowering initial timing should fix it, but at the expense of power and MPG)
Thanks in advance,
Karl
Thread
Thread Starter
Forum
Replies
Last Post