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How to: Convert ONAN CCK & MCCK 6.5KW to OEM Electronic Ignition


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  #41  
Old 03-14-2017, 08:54:40 AM
electricaldoctor electricaldoctor is offline
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Default Re: How to: Convert ONAN CCK & MCCK 6.5KW to OEM Electronic Ignition

I have a 1988 6.5 KW Onan MCCK generator in my boat. The coil is shot and I want to order some parts to get my genny operational for the 2017 boating season. In addition to replacing the coil, I would like to upgrade my existing points to electronic ignition. Can you point me in the right direction? That is a very good illustrated tutorial that you put together for us, but it does not work for me because I need a new coil. A new or used OEM coil will be a rare find, so can you recommend an alternative solution?
~Ken
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  #42  
Old 03-14-2017, 04:21:48 PM
preskitaz preskitaz is offline
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Default Re: How to: Convert ONAN CCK & MCCK 6.5KW to OEM Electronic Ignition

I just upgraded my 7.5JB to electronic ignition and Propane using the points but it triggers a GM HEI module ($25) to fire the coil. The same can be done on your setup. The points trigger the module but since its low current they wont wear like the do with conventional points circuit (practically forever). I'll post some pictures of what I did because the coil on the JB is 6v not 12v. Its cheap and the best part is not having to figure out where to stick magnets on the flywheel and muck with the timing in the process. As for the coil I believe there are still coils available I read in a thread somewhere, try a search.
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  #43  
Old 03-15-2017, 11:07:58 PM
preskitaz preskitaz is offline
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Default Re: How to: Convert ONAN CCK & MCCK 6.5KW to OEM Electronic Ignition

I know it's not a cck but I have a JB 7.5 I successfully converted. The same circuit can be used on any onan that uses 12v and points.
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  #44  
Old 03-16-2017, 12:55:27 PM
preskitaz preskitaz is offline
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Default Re: How to: Convert ONAN CCK & MCCK 6.5KW to OEM Electronic Ignition

Don't know how to go back and edit my post but I got a label wrong on one of the wires. Anyways this is the correct image. I mounted the HEI module to an old Pentium heat sink I had laying around. Amazon has the specific heat sink for the module. In the one picture my points are located above the oil filter. I removed the condenser and ran the wire into the control box where the new ignition circuit is located. I left the ballast resistor on the coil and since the HEI module uses 12 volts, I connected the power to the front side of the resistor (not after ). The transistor and R1 I mounted on a small breadboard and used sealing heatshrink to cover it. Using this circuit I was able to make it more reliable since the new points won't wear because of the low current switching. I'm also able to still adjust the timing by adjusting the points as stated in the manual.
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  #45  
Old 03-16-2017, 06:34:34 PM
deno deno is offline
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Default Re: How to: Convert ONAN CCK & MCCK 6.5KW to OEM Electronic Ignition

Parts list? I have a 4.0 BGE on an '89
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  #46  
Old 03-17-2017, 07:32:44 AM
preskitaz preskitaz is offline
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Default Re: How to: Convert ONAN CCK & MCCK 6.5KW to OEM Electronic Ignition

Quote:
Originally Posted by deno View Post
Parts list? I have a 4.0 BGE on an '89
Standard Motor Products LX301T Ignition Module/Control Unit - Amazon.Com $18.96
Heatsink for module
4.7k ohm resistor 1/4 watt resistor
2N2222 or equiv. NPN transistor, min gain 150

That's pretty much it
The diagram I used is attached
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  #47  
Old 03-17-2017, 07:34:43 AM
preskitaz preskitaz is offline
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Default Re: How to: Convert ONAN CCK & MCCK 6.5KW to OEM Electronic Ignition

Make sure you remove the condenser from the points when you install the circuit in fig 1 on my picture
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  #48  
Old 04-01-2017, 07:15:08 AM
sdowney717 sdowney717 is offline
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Default Re: How to: Convert ONAN CCK & MCCK 6.5KW to OEM Electronic Ignition

Quote:
Originally Posted by preskitaz View Post
I just upgraded my 7.5JB to electronic ignition and Propane using the points but it triggers a GM HEI module ($25) to fire the coil. The same can be done on your setup. The points trigger the module but since its low current they wont wear like the do with conventional points circuit (practically forever). I'll post some pictures of what I did because the coil on the JB is 6v not 12v. Its cheap and the best part is not having to figure out where to stick magnets on the flywheel and muck with the timing in the process. As for the coil I believe there are still coils available I read in a thread somewhere, try a search.
Waste spark coils are what you need.
2 cylinder motorcycles and the Saturn 4 cylinder mid 90's engine use them as well as many others.

I have a thread where I did this idea for two MCCK engines. I tried one circuit but did not work, then found another which did, something to do with older 4 pin GM modules, they do not all work the same.
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  #49  
Old 05-02-2017, 01:58:12 PM
len k len k is offline
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Default Re: How to: Convert ONAN CCK & MCCK 6.5KW to OEM Electronic Ignition

My thread summarizing some car and other ignition moduals
https://www.smokstak.com/forum/showthread.php?t=167037
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  #50  
Old 05-16-2017, 07:33:44 PM
dracer dracer is offline
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Default Re: How to: Convert ONAN CCK & MCCK 6.5KW to OEM Electronic Ignition

Quote:
Originally Posted by preskitaz View Post
Standard Motor Products LX301T Ignition Module/Control Unit - Amazon.Com $18.96
Heatsink for module
4.7k ohm resistor 1/4 watt resistor
2N2222 or equiv. NPN transistor, min gain 150

That's pretty much it
The diagram I used is attached
thank you , for the info , used it for a 4.o that I picked up that had a bad condenser , it did not cost that much more than a new condenser would have (I bought a cheap module ) since I had to buy 10 transistors and 30 resistors I some left to convert others thanks again Roger
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