electronic ignition conversion

rojoc

Petty Officer 2nd Class
Joined
Aug 15, 2005
Messages
103
Hello all. I'm sure this has been discussed many times, but I'm still unsure as to what the consensus of opinion is. Can anyone share their experience with us (good or bad) as to electronic ignition conversion. Petronix seems to be the front runner? Thanks in advance. 1988 5.0 cobra. 22' starcraft offshore fisherman.
 

elpaso

Petty Officer 1st Class
Joined
Jun 27, 2003
Messages
264
Re: electronic ignition conversion

Electronic ignition is a fantastic improvement over points and condenser.<br />It makes your ignition simple and almost bullet proof. <br />But Petronix have some problems with OMC system. <br />Go to search at top of this page - try omc ignition change -<br />or go to petronix.com This subject has been discussed many times<br />There are other brands of electronic ignitions,<br />try ebasic.com<br />on this site.
 

Richard Petersen

Senior Chief Petty Officer
Joined
Dec 17, 2004
Messages
778
Re: electronic ignition conversion

Plus and minus of points or computer chip ignition comes down to your need to get running quickly when it stops running way out there and nobody is free to get to you for 24 hours.------------------Change points,condenser, rotor and the cap. 1/2 hour maximum. Electronic ignition, 24 hours. More, if a hand held programmer is needed or a sensor failed. Your choice.
 

trog100

Senior Chief Petty Officer
Joined
Dec 1, 2004
Messages
751
Re: electronic ignition conversion

i have a compromize type system.. they used to be very common back in the days when lots of cars still had points and folks wanted to upgrade em.. very hard to find now thow as i discovered when i went looking for one..<br /><br />u still keep the points which act as the switchig or trigger system.. they pass no power so they last forever.. the power and transistor switching is provided by a nicely heat sinked (big fins) seperate black box bolted to the engine or bulkhead..<br /><br />the weakness with bunging the entire system power transistors and all inside the distributor as the petronics conversion does is heat dissapation.. there really isnt room for a decent sized heat sink or adequate airflow to keep the power transitors cool enough..<br /><br />which is why the cheaper one will burn out the power transistors if u forget to turn off your ignition.. the more expensive one has some kind of thermal cut-out to supposedly stop this happenning..<br /><br />with my type system if the black box fails a couple of wires reconnected reverts back to simple points again..<br /><br />i have also left my ignition switched on over night at least twice.. without problems.. not a wise thing to do but with my boat an all too easy thing to do..<br /><br />i like the "keep the points systems" but as i say such units are hard to find nowadays.. mainly cos there aint no cars out there with points anymore.. only boats.. they dont have to be marine units an auto one will do.. they are also generic fit any engine) systems..<br /><br />trog
 

rodbolt

Supreme Mariner
Joined
Sep 1, 2003
Messages
20,066
Re: electronic ignition conversion

thats the beauty of the prestolite BID system. its fully self contained, the module/pickup coil and sensor assy can be changed with a screwdriver and a .010" feeler gauge in about 10 minutes. slightly longer if ya drop a screw :) . if your nervous about electronic ign then keep a spare module onboard, but failure is rather low if maint is done. the only draw back to that system is it still uses mechanical advance weights.
 

skiriver

Cadet
Joined
Sep 14, 2005
Messages
19
Re: electronic ignition conversion

Hey rojoc, here's another two cents on the electronic ignition debate. I'm sure you've gotten parts, or all, of it before. To be coherent I have to try and start at the beginning. <br />I have an '85 OMC 4.3L which I changed over to the Pertronix Ignitor II. I also used the Flamethrower II epoxy coil. At this point I decided to also change out the rotor, cap, wires, and plugs.<br />The OMC mod for me was soldering two diodes and two resistors in a line from the coil to the eletronic shift assist module. Pertronix instructions are pretty straight forward for this. I then replaced a resistor wire with one large enough to carry 12V to the coil. The reason for the diode/resistor mod is to keep the volts going to the ESA at 6V. When you change over to the Ignitor II you're getting 12V through your ignition system over the factory 6V setup. You don't want to burn out your ESA as it is designed to run on 6V. Your system maybe new enough to install an ESA designed to complement the Ignitor II without the mod. <br /> I'm real happy with the change. If you decide to change over I'm sure you will be pleased with the performance. <br />As to reliability, this debate will go on forever. We get in our motor vehicles, which have electronic ignitions, and drive them for years without to much concern, or any repair. Of course, when equipment fails on land it's not quite the same as at sea. Nobody relishes the thought of being stranded at sea which prompts some concern over changing your ignition. However, the Pertronix system seems much improved from the various earlier design attempts that still give some people nightmares. I suppose you can always carry another plate with points and condensor mounted and already adjusted for a quick change in an emergency.<br />Hope this helps. Oh, I am in no way affiliated with the Pertronix company! :)
 

Buttanic

Senior Chief Petty Officer
Joined
Sep 25, 2003
Messages
711
Re: electronic ignition conversion

Quote Trog "i have a compromize type system.. they used to be very common back in the days when lots of cars still had points and folks wanted to upgrade em.. very hard to find now thow as i discovered when i went looking for one.."<br /><br /><br />Both MSD and Mallory make electronic modules that can be triggered by a standard point distributor. MSD's unit is marine approved and the Mallory unit can be mounted remotely in a area other than the engine compartment for safety.
 

Richard Petersen

Senior Chief Petty Officer
Joined
Dec 17, 2004
Messages
778
Re: electronic ignition conversion

I have to admit that electronic fuel and ignition systems are more reliable than points or carbs. IF, IF they are made by Honda and Nissan. I have owned only those 2 since 1974, always new. Never had a problem, I did not cause. Still on the water. I can get old crap running in most pinches well enough to make it back.
 

trog100

Senior Chief Petty Officer
Joined
Dec 1, 2004
Messages
751
Re: electronic ignition conversion

i will rephrase that quote Buttanic.. I found them hard to find.. he he..<br /><br />most folks just kinda looked at me weird when i tried to described what i wanted.. he he.. and google didnt produce much either..<br /><br />did me a favour thow really cos i found some that had been shelved for years before finally being dumped in the baragin bin and got two for ten quid each..<br /><br />trog
 
Top