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Stock 440 distributor w/ Pertronix: mechanical advance? #857314
11/18/10 04:43 PM
11/18/10 04:43 PM
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People's Republic of Kali
70runner Offline OP
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I've decided to use the Pertronix ignitor 2 and flamethrower coil on my 440-6 rebuild. The distributor is a stock remanufactured (Cardone) single points, single vacuum. Before I install the Pertronix I was wondering what, if any, adjustments I should make to the stock mechanical advance. I've read various opinions about swapping out the springs, welding/grinding the slots, et al.

I'm also interested in advice for setting up the Pertronix and timing for new engine startup.

Re: Stock 440 distributor w/ Pertronix: mechanical advance? [Re: 70runner] #857315
11/18/10 05:59 PM
11/18/10 05:59 PM
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DAYCLONA Offline
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I've been running the Petronix set-ups in everything from Forklifts, to trucks at work, and in the Toys at home,...as well as converted some Lean-Burn Chrysler set-ups over to it,....if installed properly, with the right componets, it will be your only choice you'll ever want to use!




Use the Ignitor II set-up with Petronix's Flame Thrower II ignition coil, they offer a chrome or factory style black coil, I usually run the epoxy filled version, vs the oil filled unit,...the Flame Thrower II coil is different, rating wise vs the stock Chrysler Coil, the Flame Thrower is 3 Ohm/ 100:1 turn ratio, vs the Chrysler 17 Ohm/ 70:1 Turn ratio,....I'd recommend either a new/rebuilt Chrysler single point dist be used, as a worn shaft bushing in a high mileage dist will shorten/kill the HallCell, when you install the Pertronix HallCell, some do's and dont's,....Do not remove the GREEN tape off the pick up magnet, do not gap the unit with any metal feelers, a plastic feeler is supplied (.040 thick), use a quality brass contact dist cap, not an aluminum terminal unit, eliminate the ballast resistor from the wiring, simple instructions are included in the kit,....do not run Solid Core ignition wires, as this will kill the HallCell, if ever trouble shooting the ignition, never leave the key on in the ignition position for more than 30 seconds, as this will destroy the HallCell, if you must troubleshoot the cars electrical for some time, disconnect the RED Pertronix lead from the Coil,....when you initialy install the Pertronix HallCell/pick-up, it will re-phase your timing on start-up, it will vary from =/- 5-15 degrees advaced or retarted, depending on where your current timming is, if your converting it in the car, so it may not start after installation, because timing my be way off,...check/confirm

I usually rum Bosch Platnium single and/or multi tip Bosch Platnium plugs, the ones that stock Chrysler Electronic Ignitions can't even fire, never mind run

I've never had any problems, or issuses, or "dead" Pertronix systems,..in close to 15+ years of using them

Mike

Re: Stock 440 distributor w/ Pertronix: mechanical advance? [Re: DAYCLONA] #857316
11/18/10 06:06 PM
11/18/10 06:06 PM
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Quote:

when you initialy install the Pertronix HallCell/pick-up, it will re-phase your timing on start-up, it will vary from =/- 5-15 degrees advaced or retarted, depending on where your current timming is, if your converting it in the car, so it may not start after installation, because timing my be way off,...check/confirm
Mike




Mike, thx for response. Since the Pertronix will re-phase the timing as you describe, what would be the best procedure to setup timing for new engine startup?

Re: Stock 440 distributor w/ Pertronix: mechanical advance? [Re: 70runner] #857317
11/18/10 07:36 PM
11/18/10 07:36 PM
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Lincoln Nebraska
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RapidRobert Offline
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If this is a new eng breakin which I gathered it is I'd break it in w whatever the current functioning system is because as you know you want it to light off IMMED & bring it to ~2500. When setting up I'd set the balancer timing marks 2&1/4" CW from TDC w it on #1 compression (which is 35.5 deg total) and twist the rotor until the springs are maxed out/hold it there/turn dist housing until (w #1 cap terminal over the rotor) the nearest reluctor blade is dead even w the magnet slot & lightly snug the housing. Assuming your springs are light enough for the slots/weights to be maxed out @ 2500 this'll give you ~35 degrees total when you fire it & bring the rpm up to 2500. release the rotor & check what this puts your initial at, w the rotor retracted hand turn the crank CW until the same reluctor is again lined up w the magnet & see what the timing marks show as you need ~10-15 initial for the critical immediate/quick fireup. I'm assuming you had a ballpark good slot length in the other dist b 4 pertronix.


live every 24 hour block of time like it's your last day on earth
Re: Stock 440 distributor w/ Pertronix: mechanical advance? [Re: 70runner] #857318
11/18/10 07:56 PM
11/18/10 07:56 PM
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o'fallon, MO
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hey mike, do they have just a distributor insert alone w/o a new coil? so engine looks all original? or do u have to have both? i have a concourse factory restored car and need it to stay looking that way as much as possible. But i am leaning on elec ignition now??

Re: Stock 440 distributor w/ Pertronix: mechanical advance? [Re: RapidRobert] #857319
11/18/10 10:01 PM
11/18/10 10:01 PM
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Robert
Thx for procedure. I took the remanufactured distr apart today to check the slots and replace the heavy spring. The slot plate was marked "13" which IIRC equates to 26deg crank advance. My cam has a 226deg duration @.050 which should need about 15-16deg initial advance. The 26deg would put the total adv at 41-42, too much. I welded the slot to put it at about 36-37 full advance.

While I had the distr apart I replaced the heavy spring with a stock light spring from another mopar distr. Should bring in full vacuum earlier, by 2500-2600. Its a Pertronix setup so no reluctor.

Re: Stock 440 distributor w/ Pertronix: mechanical advance? [Re: 70runner] #857320
11/18/10 10:39 PM
11/18/10 10:39 PM
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Lincoln Nebraska
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RapidRobert Offline
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Quote:

While I had the distr apart I replaced the heavy spring with a stock light spring from another mopar distr. Should bring in full vacuum earlier, by 2500-2600.


In order: initial (vac guage method)/slots (after initial amt is finalized, 36-38 for BB)/spring combo (Stay just under pinging @WOT no matter what rpm it maxes the mech curve out at) THEN hookup vac adv & want the most adv it will take (stay just under pinging)@ PART throttle (high vacuum) at a high enough RPM where the springs/slots are maxed out. all set on your hottest/driest day (most likely to ping). Vac adv takes the most effort to get the most out of it as there are 2 adjustments, a 3/32" allen wrench adjusts when (in hg) the slope starts (CCW= later) and the total a can will offer is stamped on the arm (in dist degrees). Can file both sides of the slot on the arm (tape off the opening) to increase the total or solder strips of whatever thicknesses of feeler gauges to limit how far the arm can be pulled into the can. alot of experimentation to get it dead on if max mileage is a goal.EDIT here's a spring chart. some of the springs listed are in a Crane kit that is NS1 but it may help. Not sure what springs are available but on my next one I'm gonna try trimming the "tips" off of the weights (maybe 10% of the weight to start) & slow my curve that way rather than searching for springs unless a good selection is available somewhere?? The other day a poster posted something that the mech curve should max out iirc right at the torque peak which is an area that I'd like to know more about.

Last edited by RapidRobert; 11/18/10 11:20 PM.
Re: Stock 440 distributor w/ Pertronix: mechanical advance? [Re: Brian_E] #857321
11/19/10 01:26 PM
11/19/10 01:26 PM
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Posts: 18,171
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DAYCLONA Offline
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hey mike, do they have just a distributor insert alone w/o a new coil? so engine looks all original? or do u have to have both? i have a concourse factory restored car and need it to stay looking that way as much as possible. But i am leaning on elec ignition now??






Brian, the Pertronix Ignitor II is installed under the stock cap, fits on the stock point plate, no mods/drilling/etc needed, it like installing points and a condensor, just screw it on the breaker plate,...there's an additional wire that now exits the dist to the coil,....you could run a "factory" coil, but the output is diminished, and the HallCell's life will be shortened,...Pertronix has a "factory" looking black epoxy filled coil, that you could stencil up to look even more "factory"

As i stated earlier the Pertronix coil has a 100:1 turn ratio and 3 Ohm rating, vs the Factory 70:1 TR and 17 ohm rating,....in some of my applications I like it to look factory also,..even though I eliminate the ballast resistor, I still hang one on the firewall, but run dummy wires to it

Mike

Re: Stock 440 distributor w/ Pertronix: mechanical advance? [Re: 70runner] #857322
11/19/10 01:32 PM
11/19/10 01:32 PM
Joined: Dec 2007
Posts: 18,171
Mass
DAYCLONA Offline
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Mike, thx for response. Since the Pertronix will re-phase the timing as you describe, what would be the best procedure to setup timing for new engine startup?






Rich,...I would start the engine with the point set-up and convert to the Pertronix after I've sorted thru engine break in, and any problems that might arise during that period, the Pertronix conversion is straight forward tuning basics, no surprises, if your current ignition system is in top order, you should have no difficulties swapping over to the Pertronix

Mike

Re: Stock 440 distributor w/ Pertronix: mechanical advance? [Re: DAYCLONA] #857323
11/19/10 05:32 PM
11/19/10 05:32 PM
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Posts: 1,178
People's Republic of Kali
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Rich,...I would start the engine with the point set-up and convert to the Pertronix after I've sorted thru engine break in, and any problems that might arise during that period, the Pertronix conversion is straight forward tuning basics, no surprises, if your current ignition system is in top order, you should have no difficulties swapping over to the Pertronix

Mike




Mike, good suggestion! Thx! I assume that means using a stock coil as well for initial startup.

Robert, thx for the procedure!







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