 Thinking of upgrading to electronic ignition, Changes to make for best performance |
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| Porschef |
 Jan 6 2021, 07:34 PM
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#21
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How you doin'  Group: Members Posts: 2,166 Joined: 7-September 10 From: LawnGuyland Member No.: 12,152 Region Association: North East States 
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QUOTE(Mark Henry @ Jan 5 2021, 09:08 AM)  This thread started me thinking what I use on my personal engines. I've installed pertonx on many customer cars, but I've only ever bought one pertronx for a personal car*. -T4 2600cc, SDS efi with crankfire. -3.0/6, MSD box and a PMS twinplug dizzy with a MSD trigger. -T1 2007cc, Mallory converted to Pertronx*. -914 1.7, Pertronex, with pertronx coil, note this engine came with it. I have 3 other Mallory dizzy's in stock, one is already conveted to Pertronx. IIRC I have a couple of core engines with pertronx on them. I also have a 009 with a compufire module kicking around here somewhere. Mark, if you’ve ever run a 123, I’d be curious to get your take. (IMG:style_emoticons/default/beerchug.gif) |
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| jd74914 |
Jan 7 2021, 08:37 AM
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#22
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Its alive Group: Members Posts: 4,782 Joined: 16-February 04 From: CT Member No.: 1,659 Region Association: North East States |
QUOTE(bbrock @ Jan 5 2021, 10:12 AM) QUOTE(aharder @ Jan 4 2021, 08:41 PM) QUOTE(bbrock @ Jan 4 2021, 08:00 PM) QUOTE(aharder @ Jan 4 2021, 06:07 PM) I've had a Pertronix II for about 15 years, it failed on me twice. That's why I carry a spare, about a 10 min change out. They don't like having the key left on when not running. They claim they have fixed that with the III, but who knows... Was not aware of a III, will have to look into making one of those a spare until I go to a 1 2 3 with my 2056 build I'd take it with a grain of salt. The description includes this: "Built-in reverse polarity and over current protection shuts down the system, preventing component damage." That language also is in the description of the Pertronix II so... Be cautious there... The Pertronix III has rather poor reviews concerning long term reliability. I just converted my IH340 snow plowing tractor to a electronic ignition (too much distributor shaft play threw the points gap off and would cause misfires, but anyways) and people on the vintage tractor forums reporting failing PIII units far more frequently than PII and strongly recommended sticking with the more tried and true. |
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| brcacti |
Jan 7 2021, 01:16 PM
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#23
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1974 914 1.8 Group: Members Posts: 674 Joined: 17-July 19 From: PHX AZ 60 miles south Member No.: 23,302 Region Association: Southwest Region |
So far I love my crane fireball, don't worry about points wear.
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| rbzymek |
Jan 7 2021, 08:51 PM
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#24
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Member Group: Members Posts: 195 Joined: 5-April 19 From: Northville, MI Member No.: 23,013 Region Association: Upper MidWest
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I also had issues with the Petronix III. It would drop sparks at idle and act up when hot. I have since switched to Pertronix II with no issues. It has protection for leaving the key on.
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| Bulldog9 |
Jan 8 2021, 09:36 PM
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#25
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Senior Member Group: Members Posts: 705 Joined: 21-August 13 From: United States Member No.: 16,283 Region Association: MidAtlantic Region |
I've been running the Pertronix II with matching Coil and the Plug and Play Distributor with mechanical advance on my build. Has been flawless so far.
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| Jamie |
Jan 8 2021, 09:52 PM
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#26
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Senior Member Group: Members Posts: 1,037 Joined: 13-October 04 From: Georgetown,KY Member No.: 2,939 Region Association: South East States
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QUOTE(Bulldog9 @ Jan 8 2021, 07:36 PM) I've been running the Pertronix II with matching Coil and the Plug and Play Distributor with mechanical advance on my build. Has been flawless so far. Bulldog, I assume you must be an old "screaming eagle" from your avatar, what vintage? |
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| alexkirkham |
Jan 9 2021, 05:28 PM
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#27
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Newbie Group: Members Posts: 17 Joined: 23-April 18 From: London, UK Member No.: 22,066 Region Association: None |
well, my ignition problems (a bit of bogging and also hesitancy, with slightly rough idle) were irritating and not solved by a new standard distributor...
I fitted a 123 and immediately everything was solved. Now smooth through the whole rev range. You can easily play with advance / retard, and no more timing adjustment. Was possibly the most cost-effective thing I ever did... And I know very little about engines... alex |
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