Evinrude 1967 3hp

[lindy46]

JanVanSickle wrote:

I’ve ordered a new set of OMC condensors/points.

I ordered a new set of OMC points and they were made in China.  Didn’t fit without significant modifications. From now on I’m reconditioning old (but good) points not from China which fit the way they are supposed to.

[Mumbles]

JanVanSickle wrote:

spark boot conn. to block 8.4 and 8.7 k ohm.  JT

That seems a bit high unless you installed the offshore coils which read a bit higher than OMC/BRP coils.

Did you slide the boot back and look at the spring terminals condition?  If it is loose or corroded, you can still get an ohm reading but it physically can’t carry the juice needed to fire the plug.

• This reply was modified 3 years, 8 months ago by Mumbles.
• This reply was modified 3 years, 8 months ago by Mumbles.

[crosbyman]

side note: my last ” overseas”  coils read pretty high also ….bit anxious to see how my restored 5.5 johnson will perform

Joining AOMCI has priviledges 🙂

[JanVanSickle]

OMC is China made and out of spec., that’s disapointing.  So, best might be to find old stock of am. made points, and source the caps elsewhere (since old stock caps will be suspect)?  Who makes the best caps?  JT

[JanVanSickle]

All new ignition — everything.  The coils are light green — what should these test at?  points and condensors are Sierra.  The Sierra points are garbage.  Not sure about the caps yet.  JT

[crosbyman]

caps in a can at .22uf can most likely be replaced with these    .22uf good for 630V …..

Cary 10pc Metallized Polypropylene Film Capacitor 0.22uf 630v for Tube Amps : Amazon.ca: Tools & Home Improvement

 

 

I would  sleeve the  metal conductors with heat shrink or  pieces od stripped off  wire coating   and just  bolt one end the grd  and the other on the point screw

 

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JanVanSickle

[joecb]

Spark plug wires??  check for cracked chaffed spots that could be shorting high voltage to ground. This will not show up with continuity or resistance test. An old trick is to spin it over in a darkend room… look and listen.

 

Joe B

[JanVanSickle]

I’ll try them since they are so cheep.  I’m used to guitar amp caps that start at 10 times the dollars and go way up.  JT

[crosbyman]

here are some links to the Western Region  AOMCI with great  articles on testing repairing caps.

the author  m.Mohat  specifies 850v caps as the best solution for rebuild caps but 630v  may be  suitable nonetheless ….something to try out  anyway

the square ones above can be stuffed in emptied  capacior cans*  as shown  but nothing wrong with  direct connections between grd and points  hidden under the flywheel …see comment below from m.Mohat’s article

• just be  certain to insulate the  top wire  from the  side of the can. I have reused the old capacitor  short carboard  tubes

 

https://wrcoutboards.org/wp-content/uploads/2020/04/Part1_Condenser_Construction_Failure_Modes.pdf

https://wrcoutboards.org/wp-content/uploads/2020/04/Part2_Condenser_Testers_And_Testing_Correctly.pdf

https://wrcoutboards.org/wp-content/uploads/2020/04/Part3_Sizing_Condensers_Correctly.pdf

https://wrcoutboards.org/wp-content/uploads/2020/04/Part4_Repairing_Broken_Condensers.pdf

Joining AOMCI has priviledges 🙂

• This reply was modified 3 years, 8 months ago by crosbyman.
• This reply was modified 3 years, 8 months ago by crosbyman.

[amuller]

Opinion:  Points can almost always be polished up and continued in service.  Condensers are another story as NOS may have deteriorated in storage and new ones may be low quality.  Read Mr. Mohat’s articles linked above.  Servicing ignitions isn’t as easy as it used to be.

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