Question on dizzy advance
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Senior User
Joined: Jan 2004
Posts: 157
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From: Buckeye, AZ
Question on dizzy advance
I pulled out the dual-point dizzy this last weekend and replaced it with an Accel electronic version. I also put on new 8mm wires and new plugs gapped at 45.
All this on a '428' rebuilt motor with 6-7K miles on it. The carb is a 4bbl Carter-AFB.
How much can I safely run the advance? I started @ 10 and it bogged big time when the secondaries opened and sneezed through the carb. I went up to 14-15 and a lot of the bog is gone, but not all. Still no pinging.
Can I go higher yet? There was NO bog at all before, but I never checked the timing before pulling the old unit, grumble grumble. I bet if I went 18-20, the bog would be gone, but IS it safe to run that much?
The old dizzy did not have a vacume advance, but the new one does. It's plugged to the ported hookup and all advance seems to come on early according to the light.
As long it doesn't ping, I should be alright, do ya think?
Thanks,
Keith
All this on a '428' rebuilt motor with 6-7K miles on it. The carb is a 4bbl Carter-AFB.
How much can I safely run the advance? I started @ 10 and it bogged big time when the secondaries opened and sneezed through the carb. I went up to 14-15 and a lot of the bog is gone, but not all. Still no pinging.
Can I go higher yet? There was NO bog at all before, but I never checked the timing before pulling the old unit, grumble grumble. I bet if I went 18-20, the bog would be gone, but IS it safe to run that much?
The old dizzy did not have a vacume advance, but the new one does. It's plugged to the ported hookup and all advance seems to come on early according to the light.
As long it doesn't ping, I should be alright, do ya think?
Thanks,
Keith
Senior User
Joined: Jan 2003
Posts: 387
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From: Calgary
I am watching the responses you get Kwandri because my 302 doesn't seem to ping no matter what I advance it to. Then again my hearing isn't what it used to be. Maybe we just aren't hearing the pinging. I wonder if there is a way of amplifying the sound under the hood when you drive.
On the weekend I thought I would keep advancing it until I heard pinging. Well I had it all the way up to 30º and I still didn't hear anything. Amazing you much performance you pick up. I backed it back down to about 12º.
On the weekend I thought I would keep advancing it until I heard pinging. Well I had it all the way up to 30º and I still didn't hear anything. Amazing you much performance you pick up. I backed it back down to about 12º.
