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Username Post: Electronic Ignition        (Topic#352362)
Dave in VA 
Poster
Posts: 99
Dave in VA
Age: 68
Loc: SW Virginia, USA
Reg: 03-11-18
08-06-18 12:52 PM - Post#2742108    

I've seen these modules on Nat Chevy and Chevs 40's. What would be the benefit of this?

Stock 216, except for the split manifold. The car runs great, but runs a little rough at idle. New plugs and wires, but I haven't been inside the distributor or done anything with the valves. 12v conversion that doesn't appear to be a hack job. 12v Delco generator and 2 wire coil.

"Knowledge is Good" -- Emil Faber

U S Navy MM2 1970-75 USS Canisteo AO-99, USS Miller DE-1091 (The Champagne of Ships)

1950 Styleline Deluxe 2dr, mostly stock, driver quality...new to me 3/18
2016 Equinox LTZ
2017 Silverado LTZ 6.2


 

drtyler 
Contributor
Posts: 517

Loc: Georgia
Reg: 05-06-10
08-06-18 01:17 PM - Post#2742111    
    In response to Dave in VA

If it is the typical Pertronix unit, it replaces the points and condenser. They don't necessarily improve performance over quality points with proper gap.

They do reduce the maintenance level, which certainly has value. And quality points & condensers are harder to come by now.



 
Dean50 
"12th Year" Gold Supporting Member
Posts: 1270
Dean50
Loc: Detroit area
Reg: 01-02-07
08-06-18 01:28 PM - Post#2742115    
    In response to Dave in VA

Hi Dave
Open up that distributor and file and regap pointe with a matchbook or replace your points. Replace the condenser as well. See if that helps the idle. Quick and cheap test. You should also put a dab of lubricant on the wick that runs against the distributor shaft.
Good luck.

Dean50



 
bobt 
Contributor
Posts: 178

Loc: colonial heights va
Reg: 06-28-14
08-06-18 02:32 PM - Post#2742127    
    In response to Dean50

did you adjust the carb idle mixture?



 
Bel Air kiwi 
"3rd Year" Silver Supporting Member
Posts: 4286
Bel Air kiwi
Loc: New Zealand
Reg: 04-24-14
08-06-18 07:03 PM - Post#2742160    
    In response to drtyler

Hi Guys, This has been covered in detail before but there are actually two pluses to going electronic switched ignition, whatever type.

As stated above; once set, they stay set and will switch extremely accurately from idle to about 8000 rpm. Unlike points they don't loose performance from points wear, corrosion or condenser deterioration.

The big plus and this is the bit that changes the ignition totally is they allow the use of much more primary current, which gives you much fatter sparks.
This is built in with HEI and achieved with most others buy matching the coil to the switching gear.

This normally is a rise of secondary output from 18-23kV up to 45kV. This is why they start so easy, idle smoother and can run wider plug gaps to improve the burn overall.

Aftermarket kits don't fix worn distributors with sloppy advances. But they can be hidden completely in a stock looking setup.

I use Pertronix kits as I have found them reliable and they have a huge range. I match coil performance, but haven't used one of their matched ones yet. The reason I do this is the advance curve of the distributor stays as it was. Not sure if the aftermarket adapted HEI have the same advance curves. No one is prepared/able to tell me their specs.

Cheers Kiwi



48 3100 RHD, 51 Deluxe 4DR RHD, 51 Bel Air parts car, 52 Bel Air P-Glide LHD. Others 23T, 32 Tudor, 58 Edsel pacer 4DR HDT, 79 F250 351C RHD. 69,70,82 Capri. No mobile, no TV, and no Jap cars.

"They made a desert and called it peace." Tacitus


Edited by Bel Air kiwi on 08-06-18 07:03 PM. Reason for edit: No reason given.

 
50sChevys 
"16th Year" Gold Supporting Member
Posts: 2109
50sChevys
Age: 83
Loc: Central Texas
Reg: 03-23-02
08-06-18 09:18 PM - Post#2742169    
    In response to Bel Air kiwi


As stated, this subject has been covered in the past pretty much from A to Z. Have nothing to add that hasn’t already been covered several times one way or another.

I like them and agree basically with everything stated by KIWI.

50s Chevys http://www.picturetrail.com/sfx/album/view/245196 4...


 
2blu52 
"17th Year" Silver Supporting Member
Posts: 18518
2blu52
Age: 85
Loc: Montana
Reg: 03-12-02
08-07-18 05:14 AM - Post#2742188    
    In response to 50sChevys

  • 50sChevys Said:

As stated, this subject has been covered in the past pretty much from A to Z. Have nothing to add that hasn’t already been covered several times one way or another.

I like them and agree basically with everything stated by KIWI.


After spending some time bending over the fender of the 52 in near 100 degree heat, I went for the Pertronix unit and am glad I did.


"PEACE IS THAT GLORIUS MOMENT IN HISTORY WHEN EVERY ONE STANDS AROUND RELOADING"

THOMAS JEFFERSON


 
rrausch 
"14th Year" Silver Supporting Member
Posts: 13869
rrausch
Loc: L.A, Cal. & St. Louis...
Reg: 04-07-03
08-07-18 02:34 PM - Post#2742231    
    In response to 2blu52

I've ran Petronix on two 235's and one 261 since 1990. Love 'em.

1953 210 Convertible, 261 with dual Carter YF 966S carbs, P.S., Remote Bendix P.B. Booster... shade-tree restoration about done.




 
raycow 
Honored Member
Posts: 27675
raycow
Loc: San Francisco, CA
Reg: 11-26-02
08-07-18 03:18 PM - Post#2742238    
    In response to Dave in VA

I have Pertronix on everything of mine which originally came with points and I will never go back.

Ray

Those who choose an automatic transmission want transportation. Those who choose a manual transmission want to drive.


 
Dave in VA 
Poster
Posts: 99
Dave in VA
Age: 68
Loc: SW Virginia, USA
Reg: 03-11-18
08-07-18 04:15 PM - Post#2742244    
    In response to raycow

This all sounds very good. I assume that my existing coil would be OK?

"Knowledge is Good" -- Emil Faber

U S Navy MM2 1970-75 USS Canisteo AO-99, USS Miller DE-1091 (The Champagne of Ships)

1950 Styleline Deluxe 2dr, mostly stock, driver quality...new to me 3/18
2016 Equinox LTZ
2017 Silverado LTZ 6.2


 
raycow 
Honored Member
Posts: 27675
raycow
Loc: San Francisco, CA
Reg: 11-26-02
08-07-18 05:00 PM - Post#2742251    
    In response to Dave in VA

I used my stock coil with the Pertronix.

Ray

Those who choose an automatic transmission want transportation. Those who choose a manual transmission want to drive.


 
2blu52 
"17th Year" Silver Supporting Member
Posts: 18518
2blu52
Age: 85
Loc: Montana
Reg: 03-12-02
08-07-18 05:20 PM - Post#2742256    
    In response to raycow

  • raycow Said:
I used my stock coil with the Pertronix.

Ray


So did I. Talked to the tech guy first and he said yes.

"PEACE IS THAT GLORIUS MOMENT IN HISTORY WHEN EVERY ONE STANDS AROUND RELOADING"

THOMAS JEFFERSON


 
Bel Air kiwi 
"3rd Year" Silver Supporting Member
Posts: 4286
Bel Air kiwi
Loc: New Zealand
Reg: 04-24-14
08-07-18 05:27 PM - Post#2742258    
    In response to Dave in VA

Hi Dave, That assumption is the mistake most folks make.

Your original coil has its primary current deliberately restricted to about 2.3 Amps to protect the points. This means the coils has a deliberately high internal resistance of say 3-5 Ohms.

This coil is never going to produce the 45kV you could have. Same coil will give you same spark.
Also if its internal resistance is too far off the mark it can fry the Pertronix unit.

The installation instructions will tell you the coil impedance (Ohms) for a coil match. The last one I fitted used a 1.5 Ohms.
Halving of the resistance means double the current flow.
So in that application, the correct coil raised the maximum spark from 20 to 40 kV.

Do not try and use a 0.6 Ohm, so called 55kV, coil on a road vehicle. Also you may notice that some makers use non standard values to ensure you buy a complete package from them.

Electronic ignition does not use/need the ballast ignition system, and a ballast coil will be the wrong voltage. Also the start wiring will need to be converted back so the coil is power fed on start and run.

If you are not sure use the tech lines.

Cheers Kiwi



48 3100 RHD, 51 Deluxe 4DR RHD, 51 Bel Air parts car, 52 Bel Air P-Glide LHD. Others 23T, 32 Tudor, 58 Edsel pacer 4DR HDT, 79 F250 351C RHD. 69,70,82 Capri. No mobile, no TV, and no Jap cars.

"They made a desert and called it peace." Tacitus


Edited by Bel Air kiwi on 08-07-18 05:29 PM. Reason for edit: No reason given.

 
2blu52 
"17th Year" Silver Supporting Member
Posts: 18518
2blu52
Age: 85
Loc: Montana
Reg: 03-12-02
08-07-18 07:55 PM - Post#2742290    
    In response to Bel Air kiwi

  • Bel Air kiwi Said:
Hi Dave, That assumption is the mistake most folks make.

Your original coil has its primary current deliberately restricted to about 2.3 Amps to protect the points. This means the coils has a deliberately high internal resistance of say 3-5 Ohms.

This coil is never going to produce the 45kV you could have. Same coil will give you same spark.
Also if its internal resistance is too far off the mark it can fry the Pertronix unit.

The installation instructions will tell you the coil impedance (Ohms) for a coil match. The last one I fitted used a 1.5 Ohms.
Halving of the resistance means double the current flow.
So in that application, the correct coil raised the maximum spark from 20 to 40 kV.

Do not try and use a 0.6 Ohm, so called 55kV, coil on a road vehicle. Also you may notice that some makers use non standard values to ensure you buy a complete package from them.

Electronic ignition does not use/need the ballast ignition system, and a ballast coil will be the wrong voltage. Also the start wiring will need to be converted back so the coil is power fed on start and run.

If you are not sure use the tech lines.

Cheers Kiwi




I called Pertronix and discussed this with the tech folks (as I said above) It was not a problem with them to use the stock coil with the Pertronix running a stock 216. I never had a problem of any kind related to coil operation. I did find that a battery that had less than a full charge on occasion wouldnot allow for 5 plus volts to the coil causin g a no start problem until you let up on the starter button then away it goes.


"PEACE IS THAT GLORIUS MOMENT IN HISTORY WHEN EVERY ONE STANDS AROUND RELOADING"

THOMAS JEFFERSON


 
westsiderider 
"2nd Year" Silver Supporting Member
Posts: 102
westsiderider
Loc: Santa Barbara Ca.
Reg: 04-29-15
08-07-18 11:24 PM - Post#2742301    
    In response to 2blu52

I just installed Pertronix ignitor 2 in my stock distributor last week , I used their coil , flame thrower 2 , no complaints yet , so far so good for my 1959 chevy 235 engine.



 
Bel Air kiwi 
"3rd Year" Silver Supporting Member
Posts: 4286
Bel Air kiwi
Loc: New Zealand
Reg: 04-24-14
08-09-18 05:54 PM - Post#2742539    
    In response to 2blu52

Hi Blu2, That will be the case sometimes. The point I am making is that you need to match the coil primary resistance to the control unit.

If the control unit is points it has a low current limit to prevent points damage. About 2.3 Amps.
To hold the current down to this level the coil primary is wired to a specific resistance to achieve this.



48 3100 RHD, 51 Deluxe 4DR RHD, 51 Bel Air parts car, 52 Bel Air P-Glide LHD. Others 23T, 32 Tudor, 58 Edsel pacer 4DR HDT, 79 F250 351C RHD. 69,70,82 Capri. No mobile, no TV, and no Jap cars.

"They made a desert and called it peace." Tacitus


 
4spd409 
"12th Year" Silver Supporting Member
Posts: 576
4spd409
Loc: West Fargo ND
Reg: 10-10-02
08-12-18 12:33 PM - Post#2742843    
    In response to Bel Air kiwi

Just bought a Pertronix for my V8 61. Instructions say not to remove ballast resitor and stock coil is ok but for best performance use their coil.

61 Impala Bubbletop


 
Dave in VA 
Poster
Posts: 99
Dave in VA
Age: 68
Loc: SW Virginia, USA
Reg: 03-11-18
08-12-18 01:38 PM - Post#2742856    
    In response to 4spd409

I've ordered their ignition and the coil that they recommended. Also, new cap and rotor. We'll see how it goes.

I'm just trying to make this car as dependable and trouble free as possible. I hope I'm headed in the right direction.

"Knowledge is Good" -- Emil Faber

U S Navy MM2 1970-75 USS Canisteo AO-99, USS Miller DE-1091 (The Champagne of Ships)

1950 Styleline Deluxe 2dr, mostly stock, driver quality...new to me 3/18
2016 Equinox LTZ
2017 Silverado LTZ 6.2


 

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