Re: 1974-76 9.9/15 ignition timing

[joesnuffy]

PSB,
Is the motor running well? Just curious I guess your just checking to see how the timing held up after 20 hours. I do like how your thinking about letting the timing shift as the contact blocks wear.

I saw where you said you may convert it to a CD motor so not trying to steal your thread.

I did convert my 1965 9.5hp to the nova modules. I know everyone says their crap but mine work very well and keep my engine firing 180 degrees apart everytime and makes for fantastic trolling and idle very low speeds. I did put new omc factory coils in mine along with the nova modules and I soldered the wires directly to the modules keeping the wires as short as I could and mounting them under the flywheel where points would normally mount. I thought some people may have bad luck with them because the coils might be bad and be burning them up or they mount them with the wires to long. Here is a video of how I did it. I did use a screw like normal points do to secure the coil wire, module wire, and kill wire in case it didn’t work I could go back to points easily.

https://www.youtube.com/watch?v=UFeSR43hJvo

I don’t think the conversion will work on the motor your working on because it has magnets on both sides of flywheel. It might work if you only used 1 nova module and used one coil to fire both cylinders by running a 7mm plug jumper wire from one plug to the other thus making a wasted spark style ignition where both plugs fire at same time like my 40hp yamaha does the exact same thing. While one piston is on the down stroke it fires so does the one on the top stroke. Here is a pic of the flywheel used in your engine. You can see the magnets on both sides of flywheel.

http://www.ebay.com/itm/OMC-JOHNSON-EVI … HG&vxp=mtr

Here is a pic of the style flywheel on my 1967 9.5hp outboard notice how it has magnets only on one side. This is the type engine I converted and it runs very well.

http://www.ebay.com/itm/Vintage-OMC-Joh … hg&vxp=mtr

A lot of older twins have the one set of magnets on flywheels and should work with conversion I am getting ready to convert my 1952 3hp Johnson that my deceased uncle and brother purchased new for duck hunting in St Michaels. I am also going to convert my freshly rebuilt 1962 28hp Johnson also since it will be used on my whaler. Here are pics of the types/styles of flywheels I think should work.

http://www.ebay.com/itm/1958-Johnson-Se … P2&vxp=mtr

http://www.ebay.com/itm/FLYWHEEL-1957-J … Ld&vxp=mtr

Take Care,

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