Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help




Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Vintage Mercedes Forum

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 10-03-2018, 12:39 PM
Registered User
 
Join Date: Jun 2017
Posts: 16
Pertronix ignition - suggestions

Which Pertronix ignition did you install on your 280S?
Reply With Quote
  #2  
Old 10-03-2018, 12:50 PM
Tomguy's Avatar
Vintage Moderator
 
Join Date: Aug 2002
Location: near Scranton, PA
Posts: 5,164
Atchisvw,
Since you replied to a ~13 year old thread, where the OP hasn't been active in over 11.5 years, I moved this to be a new thread of its own.

Hopefully someone who has done a Pertronix conversion can provide you suggestions / input on the best unit to use for your car
__________________
Current:
2018 Chrysler Pacifica Limited
1999 Chrysler 300M - 213,xxx

Previous:
1972 280SE 4.5
2014 Jeep Grand Cherokee Limited "Hefe", 1992 Jeep Cherokee Laredo "Jeepy", 2006 Charger R/T "Hemi"
Reply With Quote
  #3  
Old 10-03-2018, 04:02 PM
Registered User
 
Join Date: Jan 2006
Location: Tucson, AZ
Posts: 4,502
I've used the standard Pertronix for 5 years or so on M110's and M115's with no problems.

The "Ignitor" II and III sets are not recommended for use with the solid core wires used by Benz.

From the Pertronix web site:

"You cannot use solid core (typically copper) spark plug wires with this product. Solid core wires do not suppress electro magnetic interference (EMT) which will interfere with electronics in your vehicle. A suppression style or spiral wound spark plug wires must be used. "

Best way to get the proper set up is by distributor number.
__________________
“Whatever story you're telling, it will be more interesting if, at the end you add, "and then everything burst into flames.”
― Brian P. Cleary, You Oughta Know By Now
Reply With Quote
  #4  
Old 10-03-2018, 05:19 PM
Registered User
 
Join Date: Jan 2012
Posts: 7,182
If the distributor is a used forever Bosch, I'd be real tempted to blend 1980's factory electronic ignition from a Volvo / Saab / VW. In theory, one could use the ignition pickup parts in the old housing.
Reply With Quote
  #5  
Old 10-05-2018, 10:18 PM
Registered User
 
Join Date: Jun 2017
Posts: 16
My ignition on my 1970 280S is a transistorized unit. Will this affect the operation of the Pertronix ignition?
Reply With Quote
  #6  
Old 10-05-2018, 10:20 PM
Registered User
 
Join Date: Jun 2017
Posts: 16
Currently using distributor #0231142003
Reply With Quote
  #7  
Old 10-06-2018, 12:19 AM
Tomguy's Avatar
Vintage Moderator
 
Join Date: Aug 2002
Location: near Scranton, PA
Posts: 5,164
If one is going to use later factory electronic ignition from Bosch, may as well use one from an m116/m117 such as a later 4.5, or a 380, 420, 500 or 560. I'd imagine the distributor itself would be plug-and-play (at least from a later 3.5/4.5, if not the aluminum-blocked engines). You're more likely to find one of those in a junkyard too, I'd imagine.

And as for the Pertronix "Interfering" with transistorized ignition... the point of the Pertonix is to replace said ignition.
__________________
Current:
2018 Chrysler Pacifica Limited
1999 Chrysler 300M - 213,xxx

Previous:
1972 280SE 4.5
2014 Jeep Grand Cherokee Limited "Hefe", 1992 Jeep Cherokee Laredo "Jeepy", 2006 Charger R/T "Hemi"
Reply With Quote
  #8  
Old 10-06-2018, 09:08 AM
Registered User
 
Join Date: Jan 2012
Posts: 7,182
Quote:
Originally Posted by Atchisvw View Post
My ignition on my 1970 280S is a transistorized unit. Will this affect the operation of the Pertronix ignition?
I'd use the existing distributor if the internal pickup coil is in good condition to trigger a modern ignition module. A 4 pin GM module is inexpensive. I'd use a GM external coil to finish off the setup.

The Pertronix system is to replace a standard ignition that uses contact points ( breaker points )

What country are you in? This makes a difference as to what parts are easily available.
Reply With Quote
  #9  
Old 10-06-2018, 09:37 AM
Graham's Avatar
Registered User
 
Join Date: Nov 2004
Location: Ontario, Canada
Posts: 3,409
Quote:
Originally Posted by Tomguy View Post

And as for the Pertronix "Interfering" with transistorized ignition... the point of the Pertonix is to replace said ignition.
A Pertronix can replace the transitorized ignition. MB call it the "Switchgear". To do that, the switchdear is bypassed and a new coil is usually required (e.g. Petronix Flamethrower).

However, a Pertronix unit can also be used to just replace the points. This overcomes problems with worn distributors (shaft wobble) and eliminates need to adjust or replace points.

Depends on the reasons owner has to consider using a Pertronix. There is a thread here with wiring diagrams for both options. Here is the one from BW (Should be very similar for 6s)
https://www.benzworld.org/forums/r-c107-sl-slc-class/1714668-pertronix-install-without-switchgear.html

By the way, the Pertronix site now says to not use even the original Ignitor 1 with copper core wires. But this is likely an error. Many of have used those Ignitors on our Benzes for many years. I have had one on my 4.5L V-8 350SL since 2008.

Search for that distributor on Pertronix site came up empty, but this site suggests model 1867A :

Bosch 6 Cylinder - Pertronix Ignitor

I know nothing about this one, but Kent is quite reliable

A complete new distributor from 123Ignition might be another option (under $500 in USA)
__________________
Graham
85 300D,72 350SL, 98 E320, Outback 2.5

Last edited by Graham; 10-06-2018 at 09:53 AM.
Reply With Quote
  #10  
Old 10-06-2018, 10:00 AM
Graham's Avatar
Registered User
 
Join Date: Nov 2004
Location: Ontario, Canada
Posts: 3,409
Quote:
Originally Posted by Tomguy View Post
If one is going to use later factory electronic ignition from Bosch, may as well use one from an m116/m117 such as a later 4.5, or a 380, 420, 500 or 560. I'd imagine the distributor itself would be plug-and-play (at least from a later 3.5/4.5, if not the aluminum-blocked engines). .
Is the 280S a 6 or an 8 cylinder? (I get confused with the 280 series!). If a 6, the M116/117 distributors wouldn't be correct. Might not fit anyway on a different block.
__________________
Graham
85 300D,72 350SL, 98 E320, Outback 2.5
Reply With Quote
  #11  
Old 10-06-2018, 12:59 PM
Registered User
 
Join Date: Jun 2017
Posts: 16
Thanks for the info! The 280S is a 6 cylinder M130 engine. I ordered the Pertronix 1867A but was hoping to use my recently replaced coil. I was having difficulty locating some ignition parts in Canada, so decided to go with the Pertronix 1.
Reply With Quote
  #12  
Old 10-06-2018, 01:41 PM
Graham's Avatar
Registered User
 
Join Date: Nov 2004
Location: Ontario, Canada
Posts: 3,409
Quote:
Originally Posted by Atchisvw View Post
Thanks for the info! The 280S is a 6 cylinder M130 engine. I ordered the Pertronix 1867A but was hoping to use my recently replaced coil. I was having difficulty locating some ignition parts in Canada, so decided to go with the Pertronix 1.
Another Canadian eh Happy Thanksgiving!

If you retain the MB switchgear, then there is no problem using coil if it is same as original.

If you bypass the switchgear, then you may need to look at coil. I am not totally sure, but the OE MB coils used external resistors and had fifferent winding ratios that conventional coils. The Pertronix coild are more conventional. This is what they say on subject:

Quote:
What type of coil can I use with the Ignitor™? How do I check my coils resistance? (12V negative ground only)
To determine if your systems coil is compatible with the Ignitor, some measurements should be taken prior to installation of the Ignitor. Caution… While performing this test, never leave the ignition switch on for more than 30 seconds at a time.

Set your voltmeter to a 15 or 20-volt scale. Attach an 18 or 20 AWG jumper wire from the negative coil terminal to an engine ground. Attach positive (red) lead of your voltmeter to the positive side of the coil, and the negative (black) lead to an engine ground. Turn the ignition switch to the run position. Now read the voltage at the positive coil terminal. Turn the ignition switch off. If the voltage measured is approximately 12 volts, no resistance wire is present. A typical resistance wire will provide 9 - 6 volts.

The next step is to determine the resistance in the primary ignition. Label the wires attached to the coil terminals and note their appropriate location. Make sure that the ignition switch is off and disconnect all wires from the coil. Adjust your meter to the lowest ohm scale. If you are using an analog style meter make sure to zero the needle.

Measure from the negative terminal to the positive terminal. Write your measurement down.

Now the maximum system amperage can be determined, divide your voltage measurement by your coil resistance measurement. This will give you the system current or amperage.

Four and six cylinder engines should not exceed 4 amps. Eight cylinder engines should not exceed 8 amps. If the total amperage in your system is higher than the amount recommended for your application, you should install a ballast resistor.

Example
Voltage 12
Resistance 1.5
12 / 1.5 = 8
Total amperage 8
You can buy a Flamethrower coil on Amazon.ca or elsewhere for about C$50. I bought one but have never installed it - still using the 46 yr old switchgear. It's pretty rugged!
__________________
Graham
85 300D,72 350SL, 98 E320, Outback 2.5
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 08:36 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page