Pertronix Ignitor III, any experience P-related or not? |
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Pertronix Ignitor III, any experience P-related or not? |
sportlicherFahrer |
Apr 6 2015, 06:15 PM
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#1
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Nothing to see here. Group: Members Posts: 1,078 Joined: 18-April 05 From: Tacoma, WA Member No.: 3,945 Region Association: Pacific Northwest |
Was checking up on ignition upgrades from Pertronix again and saw that they offer the Ignitor III for our vacuum dizzies now. Supposed to work like a box style ignition without the box(multiple spark, rev limiter). Did a search here and didn't see anything for that model. Anybody used an Ignitor III and have any useful feedback on or off a Porsche? Not looking for opinions on whether or not Pertronix belongs in our cars or not, just on the functionality of the Ignitor III. With that said, I know this may start a (IMG:style_emoticons/default/stromberg.gif) storm..... (IMG:style_emoticons/default/stirthepot.gif)
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sportlicherFahrer |
Dec 7 2019, 08:22 PM
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#2
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Nothing to see here. Group: Members Posts: 1,078 Joined: 18-April 05 From: Tacoma, WA Member No.: 3,945 Region Association: Pacific Northwest |
I'm running with 40's on mine. Stock cam with carbs should in theory be able to use stock ignition curve was my thinking, and it hasn't been a problem. Also running MSD being triggered by an ignitor II. From what I read on the III it is incompatible with tachometers and/or ignition boxes.
I am using the small vac port near the bottom of the carb on each side. It is actually above the throttle plate, so it is ported vacuum. The vac ports from each carb need to be T'd together to prevent a pulsing vacuum signal. |
Gatornapper |
Dec 7 2019, 08:48 PM
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#3
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Senior Member Group: Members Posts: 1,215 Joined: 22-September 17 From: Woods west of Richmond, VA Member No.: 21,449 Region Association: South East States |
Jim -
Totally got you on the vacuum lines being "T'd"....was thinking my ports were below the throttle plates tho.....same level as the air mixture screws..... Is there a thread evaluating vacuum advance performance vs. centrifugal advance performance on Type 4's using carbs? One top 914 shop in Colorado advised me to bend the tabs in the dizzy to keep the advance from going a full 27 deg, cutting the advance back about 10 - then advancing the idle timing to about 5 to 7 degrees......he said it would improve performance between idle and about 3,000 rpm a lot...... Hadn't done that yet.... GN I'm running with 40's on mine. Stock cam with carbs should in theory be able to use stock ignition curve was my thinking, and it hasn't been a problem. Also running MSD being triggered by an ignitor II. From what I read on the III it is incompatible with tachometers and/or ignition boxes. I am using the small vac port near the bottom of the carb on each side. It is actually above the throttle plate, so it is ported vacuum. The vac ports from each carb need to be T'd together to prevent a pulsing vacuum signal. |
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